Star Trek – Ransomware Brings us Monero and a Spock Decryptor!

Boldly going where no man has gone before, the Kirk Ransomware brings so much nerdy goodness to the table that it could make anyone in IT interested. We have Star Trek, Low Orbital Ion Cannons, a cryptocurrency payment other than Bitcoin, and a decryptor named Spock! Need I say more?

Discovered today by Avast malware researcher Jakub Kroustek, the Kirk Ransomware is written in Python and may be the first ransomware to utilize Monero as the ransom payment of choice.

Kirk Ransomware

At this time there are no known victims of this ransomware and it does not appear to be decryptable.  For those who want to discuss this ransomware or receive updates about it, they can subscribe to our Kirk Ransomware Support & Help topic.

Kirk Ransomware uses Monero for Ransom Payments

Ever since Monero was released, it has been highly touted as a more secure and anonymous payment system than Bitcoin. This has caused  underground criminal sites, like AlphaBay, to accept it as payment and for criminals to mine it using mining Trojans. It was only a matter of time until ransomware developers started requesting it.

For possibly the first time, with the release of Kirk Ransomware, Monero has been introduced as a ransom payment. The problem is that this is only going to confuse victims even more. Even with Bitcoin becoming more accepted, it is still not easy to acquire them. By introducing a new cryptocurrency into the mix, victims are just going to become more confused and make paying ransoms even more difficult.

How the Kirk Ransomware Encrypts a Computer

While it is not currently known how the Kirk Ransomware is being distributed, we do know that it is masquerading as the network stress tool called Low Orbital Ion Cannon.  Currently named loic_win32.exe, when executed Kirk Ransomware will now generate a AES password that will be used to encrypt a victim’s files. This AES key will then be encrypted by an embedded RSA-4096 public encryption key and saved in the file called pwd in the same directory as the ransomware executable.

If you plan on paying the ransom for the Kirk Ransomware, you must not delete the pwd file as it contains an encrypted version of your decryption key. Only the ransomware developer can decrypt this file and if a victim wishes to pay the ransom they will be required to send them this file.

Below is the current embedded RSA key used to encrypt the victim’s encryption key.

-----END PUBLIC KEY-----

Kirk Ransomware will now display a message box that displays the same slogan as the LOIC network stress tool. This slogan is: “Low Orbital Ion Cannon | When harpoons, air strikes and nukes fail | v1.0.1.0”.

Fake Low Orbital Ion Cannon Alert
Fake Low Orbital Ion Cannon Alert

At this point, the ransomware infection will begin to scan the C: drive for files that have certain file extensions. At the time of this writing, Kirk Ransomware targets 625 file types, which are listed at the end of the article.

If a matching file is detected, it will encrypt it using the previously created AES encryption key and then append the .kirked extension to the encrypted file’s name. For example, a file called test.jpg would be encrypted and renamed to test.jpg.kirked.

When the ransomware finishes encrypting the files it will drop a ransom note called RANSOM_NOTE.txt in the same folder as the executable. It will also display the ransom note in a Window on your desktop. A full version of the ransom note can be see at the end of the article.

This ransom note tells the victim that they must purchase ~1,100 worth of the Monero currency and send it to the enclosed Monero address. Once a payment is made, the victim must email the pwd file and the payment transaction ID to the or email addresses to receive the decryptor.

The Spock Decryptor

This wouldn’t be a Star Trek themed ransomware without Spock. The developer agrees as they have named the decryptor “Spock” and it will be supplied to the victim once a a payment is made.

The Spock Decryptor

At this time we have not seen a sample of the decryptor, so cannot provide more info regarding it.

As previously said, unfortunately at this time the ransomware does not look like it can be decrypted.  For those who want to discuss this ransomware or receive updates about it, they can subscribe to our Kirk Ransomware Support & Help topic.



Files associated with the Kirk Ransomware:



SHA256: 39a2201a88f10d81b220c973737f0becedab2e73426ab9923880fb0fb990c5cc

Targeted File Extensions:

.cfr,  .ytd,  .sngw,  .tst,  .skudef,  .dem,  .sims3pack,  .hbr,  .hkx,  .rgt,  .ggpk,  .ttarch2,  .hogg,  .spv,  .bm2,  .lua,  .dff,  .save,  .rgssad,  .scm,  .aud,  .rxdata,  .mcmeta,  .bin,  .mpqe,  .rez,  .xbe,  .grle,  .bf,  .iwd,  .vpp_pc,  .scb,  .naz,  .m2,  .xpk,  .sabs,  .nfs13save,  .gro,  .emi,  .wad,  .15,  .vfs,  .drs,  .taf,  .m4s,  .player,  .umv,  .sgm,  .ntl,  .esm,  .qvm,  .arch00,  .tir,  .bk,  .sabl,  .bin,  .opk,  .vfs0,  .xp3,  .tobj,  .rcf,  .sga,  .esf,  .rpack,  .DayZProfile,  .qsv,  .gam,  .bndl,  .u2car,  .psk,  .gob,  .lrf,  .lts,  .iqm,  .i3d,  .acm,  .SC2Replay,  .xfbin,  .db0,  .fsh,  .dsb,  .cry,  .osr,  .gcv,  .blk,  .4,  .lzc,  .umod,  .w3x,  .mwm,  .crf,  .tad,  .pbn,  .14,  .ppe,  .ydc,  .fmf,  .swe,  .nfs11save,  .tgx,  .trf,  .atlas,  .20,  .game,  .rw,  .rvproj2,  .sc1,  .ed,  .lsd,  .pkz,  .rim,  .bff,  .gct,  .9,  .fpk,  .pk3,  .osf,  .bns,  .cas,  .lfl,  .rbz,  .sex,  .mrm,  .mca,  .hsv,  .vpt,  .pff,  .i3chr,  .tor,  .01,  .utx,  .kf,  .dzip,  .fxcb,  .modpak,  .ydr,  .frd,  .bmd,  .vpp,  .gcm,  .frw,  .baf,  .edf,  .w3g,  .mtf,  .tfc,  .lpr,  .pk2,  .cs2,  .fps,  .osz,  .lnc,  .jpz,  .tinyid,  .ebm,  .i3exec,  .ert,  .sv4,  .cbf,  .oppc,  .enc,  .rmv,  .mta,  .otd,  .pk7,  .gm,  .cdp,  .cmg,  .ubi,  .hpk,  .plr,  .mis,  .ids,  .replay_last_battle,  .z2f,  .map,  .ut4mod,  .dm_1,  .p3d,  .tre,  .package,  .streamed,  .l2r,  .xbf,  .wep,  .evd,  .dxt,  .bba,  .profile,  .vmt,  .rpf,  .ucs,  .lab,  .cow,  .ibf,  .tew,  .bix,  .uhtm,  .txd,  .jam,  .ugd,  .13,  .dc6,  .vdk,  .bar,  .cvm,  .wso,  .xxx,  .zar,  .anm,  .6,  .ant,  .ctp,  .sv5,  .dnf,  .he0,  .mve,  .emz,  .e4mod,  .gxt,  .bag,  .arz,  .tbi,  .itp,  .i3animpack,  .vtf,  .afl,  .ncs,  .gaf,  .ccw,  .tsr,  .bank,  .lec,  .pk4,  .psv,  .los,  .civ5save,  .rlv,  .nh,  .sco,  .ims,  .epc,  .rgm,  .res,  .wld,  .sve,  .db1,  .dazip,  .vcm,  .rvm,  .eur,  .me2headmorph,  .azp,  .ags,  .12,  .slh,  .cha,  .wowsreplay,  .dor,  .ibi,  .bnd,  .zse,  .ddsx,  .mcworld,  .intr,  .vdf,  .mtr,  .addr,  .blp,  .mlx,  .d2i,  .21,  .tlk,  .gm1,  .n2pk,  .ekx,  .tas,  .rav,  .ttg,  .spawn,  .osu,  .oac,  .bod,  .dcz,  .mgx,  .wowpreplay,  .fuk,  .kto,  .fda,  .vob,  .ahc,  .rrs,  .ala,  .mao,  .udk,  .jit,  .25,  .swar,  .nav,  .bot,  .jdf,  .32,  .mul,  .szs,  .gax,  .xmg,  .udm,  .zdk,  .dcc,  .blb,  .wxd,  .isb,  .pt2,  .utc,  .card,  .lug,  .JQ3SaveGame,  .osk,  .nut,  .unity,  .cme,  .elu,  .db7,  .hlk,  .ds1,  .wx,  .bsm,  .w3z,  .itm,  .clz,  .zfs,  .3do,  .pac,  .dbi,  .alo,  .gla,  .yrm,  .fomod,  .ees,  .erp,  .dl,  .bmd,  .pud,  .ibt,  .24,  .wai,  .sww,  .opq,  .gtf,  .bnt,  .ngn,  .tit,  .wf,  .bnk,  .ttz,  .nif,  .ghb,  .la0,  .bun,  .11,  .icd,  .z3,  .djs,  .mog,  .2da,  .imc,  .sgh,  .db9,  .42,  .vis,  .whd,  .pcc,  .43,  .ldw,  .age3yrec,  .pcpack,  .ddt,  .cok,  .xcr,  .bsp,  .yaf,  .swd,  .tfil,  .lsd,  .blorb,  .unr,  .mob,  .fos,  .cem,  .material,  .lfd,  .hmi,  .md4,  .dog,  .256,  .eix,  .oob,  .cpx,  .cdata,  .hak,  .phz,  .stormreplay,  .lrn,  .spidersolitairesave-ms,  .anm,  .til,  .lta,  .sims2pack,  .md2,  .pkx,  .sns,  .pat,  .tdf,  .cm,  .mine,  .rbn,  .uc,  .asg,  .raf,  .myp,  .mys,  .tex,  .cpn,  .flmod,  .model,  .sfar,  .fbrb,  .sav2,  .lmg,  .tbc,  .xpd,  .bundledmesh,  .bmg,  .18,  .gsc,  .shader_bundle,  .drl,  .world,  .rwd,  .rwv,  .rda,  .3g2,  .3gp,  .asf,  .asx,  .avi,  .flv,  .ai,  .m2ts,  .mkv,  .mov,  .mp4,  .mpg,  .mpeg,  .mpeg4,  .rm,  .swf,  .vob,  .wmv,  .doc,  .docx,  .pdf,  .rar,  .jpg,  .jpeg,  .png,  .tiff,  .zip,  .7z,  .dif.z,  .exe,  .tar.gz,  .tar,  .mp3,  .sh,  .c,  .cpp,  .h,  .mov,  .gif,  .txt,  .py,  .pyc,  .jar,  .csv,  .psd,  .wav,  .ogg,  .wma,  .aif,  .mpa,  .wpl,  .arj,  .deb,  .pkg,  .db,  .dbf,  .sav,  .xml,  .html,  .aiml,  .apk,  .bat,  .bin,  .cgi,  .pl,  .com,  .wsf,  .bmp,  .bmp,  .gif,  .tif,  .tiff,  .htm,  .js,  .jsp,  .php,  .xhtml,  .cfm,  .rss,  .key,  .odp,  .pps,  .ppt,  .pptx,  .class,  .cd,  .java,  .swift,  .vb,  .ods,  .xlr,  .xls,  .xlsx,  .dot,  .docm,  .dotx,  .dotm,  .wpd,  .wps,  .rtf,  .sdw,  .sgl,  .vor,  .uot,  .uof,  .jtd,  .jtt,  .hwp,  .602,  .pdb,  .psw,  .xlw,  .xlt,  .xlsm,  .xltx,  .xltm,  .xlsb,  .wk1,  .wks,  .123,  .sdc,  .slk,  .pxl,  .wb2,  .pot,  .pptm,  .potx,  .potm,  .sda,  .sdd,  .sdp,  .cgm,  .wotreplay,  .rofl,  .pak,  .big,  .bik,  .xtbl,  .unity3d,  .capx,  .ttarch,  .iwi,  .rgss3a,  .gblorb,  .xwm,  .j2e,  .mpk,  .xex,  .tiger,  .lbf,  .cab,  .rx3,  .epk,  .vol,  .asset,  .forge,  .lng,  .sii,  .litemod,  .vef,  .dat,  .papa,  .psark,  .ydk,  .mpq,  .wtf,  .bsa,  .re4,  .dds,  .ff,  .yrp,  .pck,  .t3,  .ltx,  .uasset,  .bikey,  .patch,  .upk,  .uax,  .mdl,  .lvl,  .qst,  .ddv,  .pta

Ransom Note Text:

                     :xxoc;;,..                                        .
                    cWW0olkNMMMKdl;.                       .;llxxklOc,'
                   oWMKxd,  .,lxNKKOo;.                  :xWXklcc;.     ...'.
           k      lMMNl   .    ON.                         :c.             ''.  ':....
          .WXc   ;WMMMXNNXKKxdXMM.                                                .    .
          .NdoK: XMMMMMMMMMMMMMMM;oo;                                ...;,cxxxll.       .
          .WX.K0'WMMMWMMMMMWMNXWMooMWNO'                         ..,;OKNWWWWMMMMMXk:.
           KK:xKKWMMMXNMMMMW;  .. :WNKd,                ..    .'cdOXKXNNNNNWWMMMMMMMW0,
           lNMXXMMMMMMMMWWMMWKk,  ;0k'                    .,cxxk0K0O0XXWWMMMMMMMMMMMMMMX:..   ..
            ..,;XMMMMMMMWXWWK0KK: .;.                    .:lddddxOOO0XWMMMMMMMMMMMMMMMMMMO.    .,
              .kKXMMMMMWkoxolcc;..                      .':loodxO00OO0NNXNWMMMMMMMMMMMMMMMN;     '.
              .MK;kWMMMWWKOc.  .                        ..';cdxkKNX0kOOOKNMMMMMMMMMMMMMMMMMW:    .
              ,MW:,:x0NMMMMWW0x'                          ..,:dXNWW0xkkKWMMMMMMMMMMMMMMMMMMWk.  ..
              oMMN;    ;odoccc;c:.                         ...lXWWMOok0NMMMMMWNXKXKXWMMMMMMMOc.
              XMMMX,                                    ....';lldkWkodK0loc'.  .'lxx0kOKNMMMXo.
            'XMMMMMNc                                            .dldXWx.      ..,,coOXOkXMMMK,
       ,.   .:dk0KNWMk.                                 ...        .kWMK,.  ..:c .:.. .0MWMMMMO.
  .':x0K0:.          ..   .                                 .      .OWMNNXO:cccdxKXWMW0o0WWMMMM;.
 00000000000kdl:,'.                                      ..'o00l   'KMMNKNWWNKXWWMMMMMMMMMMMMMM0.
 0000000000000000000Oxl:'                                .;xKWWx  .xNMMMWNMMMMMMMMMMMMMMMMMMMMMMl
 0000000000000000000000000x;. ..,::,.                  .ck0KKk'   '0WMMMMMMMWWMMMMMMMMMMMMMMMMMM0.   .'
 0000000000000000000000000000Oxdllc:;,....,'...       .cdkOko:     ,cOKKXWMMMKd0WMMMMMMMMMMMMMWW0. 'Kc:,
 000000000000000000000000000000000OkkkxdoodxOkoooool   .;okOx,       .,'...cKMXl'oKWMMMMMMMWWNXN0  'MMc0.
 0000OO000000000000000000000000000000000000000kc.      .:dk0c         ,KNKxdKMMM0;;kMMMMMMMMWNKXO  ,kW0xl
 OdloxO000000000000000000000000000000000000000000x,     .,ll;      .lokKWMMMMMMMMM0xNMMMMMMMNXXNo.xK;cXKx
 lx000000000000000000000000000000000000000000000000l     .'..    .'cKWXOXMMMMMMMMMMMMMMMMMWWNXXNKX0MNkNK0..
 00000000000000000000000000000000000000000000000000O      ..    ..,;ok0X000KKXWMNNMMMMMMMMNNXKKXX00MMMWWc',
 00000000000000000000000000000000000000000000000000d              .. ..........;;.cKMMMMMWNXKKXNKxkNMMX,
 000000000000000000000000000000000000000Ko.0000000Ol                .'::odkkOOOxxxoxNMMMMNNWNXKK0k..;'
 0000000000000000000000000000000000000000..:000000kl             .:coododkXWMMMMMMMWWMMMNNNNNKOkkx:
 :;ok00000000000000000000000000000000000O.;.d00000dc        ...   .........cONMMMMMMMMMNXXXN0dlddxN.
 .dk000000000000000000000000000000000000;ld,.O00kocc        ..    ...,;::lokKNMMMMMMMMWKOO0OxloocxM:
 OO0000000000000000000000000000000000000ol0Koc0xc:ll  .         ..;lxO0XNNMMMMMMMMMMMN0xoxOdl::,;0Md
 :;,'..;loxk000000000000000000000000000000000lx..loo ,0          .'';lkKKNMMMMMMMMMNOd:;lc:;'..,kWMK
 cccldxkkkO00Okdooddxk00000000000000000000000Oc'lddl dK,            .':ollokOOOOOOOc'.........lXMMMM,
 000000kdoc,....;cldkO0000000000000000000000Okdodddo'K0'.                   .......        .oKMMMMMM0
 :,'....',;:ldkO0000000000000000000000000000Okxodddd;Xk,...                              .l0NMMMMMMMM:
 OO000000000000000000000000000000000000000000OkodxxxoXo,,,..                           .:kKWMMMMMMMMMW'
 dO0000000000000000000000000000000000000000000OodxxxkKl;,,,,                          'dOKWMMMMMMMMMMMX

      _  _____ ____  _  __   ____      _    _   _ ____   ___  __  ____        ___    ____  _____ 
     | |/ /_ _|  _ \| |/ /  |  _ \    / \  | \ | / ___| / _ \|  \/  \ \      / / \  |  _ \| ____|
     | ' / | || |_) | ' /   | |_) |  / _ \ |  \| \___ \| | | | |\/| |\ \ /\ / / _ \ | |_) |  _|  
     | . \ | ||  _ <| . \   |  _ <  / ___ \| |\  |___) | |_| | |  | | \ V  V / ___ \|  _ <| |___ 
     |_|\_\___|_| \_\_|\_\  |_| \_\/_/   \_\_| \_|____/ \___/|_|  |_|  \_/\_/_/   \_\_| \_\_____|

Oh no! The Kirk ransomware has encrypted your files!



Your computer has fallen victim to the Kirk malware and important files have been encrypted - locked
up so they don't work. This may have broken some software, including games, office suites etc.

Here's a list of some the file extensions that were targetted:

    .3g2      .rar      .jar      .cgi      .class    .jtd      .potx     .xex      .dds      
    .3gp      .jpg      .csv      .pl       .cd       .jtt      .potm     .tiger    .ff       
    .asf      .jpeg     .psd      .com      .java     .hwp      .sda      .lbf      .yrp      
    .asx      .png      .wav      .wsf      .swift    .602      .sdd      .cab      .pck      
    .avi      .tiff     .ogg      .bmp      .vb       .pdb      .sdp      .rx3      .t3       
    .flv      .zip      .wma      .bmp      .ods      .psw      .cgm      .epk      .ltx      
    .ai       .7z       .aif      .gif      .xlr      .xlw      .wotreplay.vol      .uasset   
    .m2ts     .dif.z    .mpa      .tif      .xls      .xlt      .rofl     .asset    .bikey    
    .mkv      .exe      .wpl      .tiff     .xlsx     .xlsm     .pak      .forge    .patch    
    .mov      .tar.gz   .arj      .htm      .dot      .xltx     .big      .lng      .upk      
    .mp4      .tar      .deb      .js       .docm     .xltm     .bik      .sii      .uax      
    .mpg      .mp3      .pkg      .jsp      .dotx     .xlsb     .xtbl     .litemod  .mdl      
    .mpeg     .sh       .db       .php      .dotm     .wk1      .unity3d  .vef      .lvl      
    mpeg4     .c        .dbf      .xhtml    .wpd      .wks      .capx     .dat      .qst      
    .rm       .cpp      .sav      .cfm      .wps      .123      .ttarch   .papa     .ddv      
    .swf      .h        .xml      .rss      .rtf      .sdc      .iwi      .psark    .pta      
    .vob      .mov      .html     .key      .sdw      .slk      .rgss3a   .ydk                
    .wmv      .gif      .aiml     .odp      .sgl      .pxl      .gblorb   .mpq                
    .doc      .txt      .apk      .pps      .vor      .wb2      .xwm      .wtf                
    .docx     .py       .bat      .ppt      .uot      .pot      .j2e      .bsa                
    .pdf      .pyc      .bin      .pptx     .uof      .pptm     .mpk      .re4                

There are an additional 441 file extensions that are targetted. They are mostly to do with games.

To get your files back, you need to pay. Now. Payments recieved more than 48 hours after the time of
infection will be charged double. Further time penalties are listed below. The time of infection has
been logged.

Any files with the extensions listed above will now have the extra extension '.kirked', these files
are encrypted using military grade encryption.

In the place you ran this program from, you should find a note (named RANSOM_NOTE.txt) similar to this one.
You will also find a file named 'pwd' - this is your encrypted password file. Although it was
generated by your computer, you have no way of ever decrypting it. This is due to the security
of both the way it was generated and the way it was encrypted. Your files were encrypted using
this password.

 ____  ____   ___   ____ _  __   _____ ___     _____ _   _ _____    ____  _____ ____   ____ _   _ _____ _ 
/ ___||  _ \ / _ \ / ___| |/ /  |_   _/ _ \   |_   _| | | | ____|  |  _ \| ____/ ___| / ___| | | | ____| |
\___ \| |_) | | | | |   | ' /     | || | | |    | | | |_| |  _|    | |_) |  _| \___ \| |   | | | |  _| | |
 ___) |  __/| |_| | |___| . \     | || |_| |    | | |  _  | |___   |  _ <| |___ ___) | |___| |_| | |___|_|
|____/|_|    \___/ \____|_|\_\    |_| \___/     |_| |_| |_|_____|  |_| \_\_____|____/ \____|\___/|_____(_)

  "Logic, motherfucker." ~ Spock.

Decrypting your files is easy. Take a deep breath and follow the steps below.

 1 ) Make the proper payment.
     Payments are made in Monero. This is a crypto-currency, like bitcoin.
     You can buy Monero, and send it, from the same places you can any other
     crypto-currency. If you're still unsure, google 'bitcoin exchange'.

     Sign up at one of these exchange sites and send the payment to the address below.

     Make note of the payment / transaction ID, or make one up if you have the option.

    Payment Address (Monero Wallet):

        Days   :  Monero  : Offer Expires
        0-2    :  50      : 03/18/17 15:32:14
        3-7    :  100     : 03/23/17 15:32:14
        8-14   :  200     : 03/30/17 15:32:14
        15-30  :  500     : 04/15/17 15:32:14

    Note: In 31 days your password decryption key gets permanently deleted.
          You then have no way to ever retrieve your files. So pay now.

 2 ) Email us.
     Send your pwd file as an email attachment to one of the email addresses below.
     Include the payment ID from step 1.

     Active email addresses:

 3 ) Decrypt your files.
     You will recieve your decrypted password file and a program called 'Spock'.
     Download these both to the same place and run Spock.
     Spock reads in your decrypted password file and uses it to decrypt all of the
     affected files on your computer.

     > IMPORTANT !
       The password is unique to this infection.
       Using an old password or one from another machine will result in corrupted files.
       Corrupted files cannot be retrieved.
       Don't fuck around.

 4 ) Breathe.

       _     _____     _______    _     ___  _   _  ____ 
      | |   |_ _\ \   / / ____|  | |   / _ \| \ | |/ ___|
      | |    | | \ \ / /|  _|    | |  | | | |  \| | |  _ 
      | |___ | |  \ V / | |___   | |__| |_| | |\  | |_| |
      |_____|___|  \_/  |_____|  |_____\___/|_| \_|\____|
                         _    _   _ ____     ____  ____   ___  ____  ____  _____ ____  
                        / \  | \ | |  _ \   |  _ \|  _ \ / _ \/ ___||  _ \| ____|  _ \ 
                       / _ \ |  \| | | | |  | |_) | |_) | | | \___ \| |_) |  _| | |_) |
                      / ___ \| |\  | |_| |  |  __/|  _ <| |_| |___) |  __/| |___|  _ < 
                     /_/   \_\_| \_|____/   |_|   |_| \_\\___/|____/|_|   |_____|_| \_\

Full version of the Ransom Note:

Full Ransom Note


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