Analysis

  • max time kernel
    148s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    09/04/2024, 05:21

General

  • Target

    e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe

  • Size

    799KB

  • MD5

    e950889fc7f88cbc4408d934e2e220f6

  • SHA1

    cefca2c4538365655cb1eead3f3390313b9ea18a

  • SHA256

    a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879

  • SHA512

    82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb

  • SSDEEP

    12288:LVHqYgXjvWYZeTPFWz5RNUDIFUEW00h/HsS54HWuE:LVKvXj7ZeTd8/0IyT00/54HW

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes
  • extension

    .nooa

  • offline_id

    PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://astdg.top/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-CnI3tI6Ktv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0322gDrgo

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1780
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\53b29552-40bb-424c-b5c6-c1f6011e9abf" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2412
      • C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2628
        • C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2428

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          1KB

          MD5

          580071ebd24cccfd9268e1474bb8134e

          SHA1

          443665efe7009fe1d4c5bc4786dc9cc540e59ef6

          SHA256

          53e3fd53196b53d23b724612cf2704518edf3e979dca02f5674ac419b5f7b461

          SHA512

          13d52455d8a30a0af06c420cd01f13f55efc4c55b59883c5208bf4929352e7b783557bff6a157c4fc71a8e7cbfadf00d55eef8ebef4b984624d8feb116a960a4

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          724B

          MD5

          8202a1cd02e7d69597995cabbe881a12

          SHA1

          8858d9d934b7aa9330ee73de6c476acf19929ff6

          SHA256

          58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

          SHA512

          97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          410B

          MD5

          dee0d584312b1218b8c25a1025e361c7

          SHA1

          7d66aa421782438a997e6b3781c96869f692df14

          SHA256

          613972f1636eecce1563f567a29b049735b496eb82d44566e40f89df64901d9f

          SHA512

          9ed20ac5fa9ce8e6e46edc641e0103cd96c42df8156238102b0b2874d221c7e1c71d4e7bdc47ddabb687d211c3d9c0ebc8a83592caa1a4935d05f8f430d5b121

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

          Filesize

          344B

          MD5

          2eb6b2da09454ea922752130773add02

          SHA1

          daf11cda2fc5e53c04beed64adec1c83fb21c242

          SHA256

          6a6cc07d0c1b46a9d1c971a032006eebcc854b67e440fbb41d0d6c1d93dff406

          SHA512

          758cd992fd44973d6b13ab085cf3723f03ad3cc18e552379b81800a4c9fc81e843240f1216e6a5d044fe8e08ecae27ba895e54386586f3064bbc2ae555449d18

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          392B

          MD5

          a40e6081ebb759cf5d244fa769fd0d1e

          SHA1

          ee1cd5aa0506ef5b0a646e375f04d23447f234c6

          SHA256

          11fe606a81d7fcb159266f6b0871803db54b2451d6030afbfc68b0b2d00f94f1

          SHA512

          a95dfc4efbc7b3cdd7c8bad13598319ea1c283c448f419ef6730fd231dfb9c80236ad0854adb9d8685427aa34072f7c16a5376b4da3f4f567291cacec4d56aeb

        • C:\Users\Admin\AppData\Local\53b29552-40bb-424c-b5c6-c1f6011e9abf\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe

          Filesize

          799KB

          MD5

          e950889fc7f88cbc4408d934e2e220f6

          SHA1

          cefca2c4538365655cb1eead3f3390313b9ea18a

          SHA256

          a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879

          SHA512

          82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb

        • C:\Users\Admin\AppData\Local\Temp\Cab225F.tmp

          Filesize

          65KB

          MD5

          ac05d27423a85adc1622c714f2cb6184

          SHA1

          b0fe2b1abddb97837ea0195be70ab2ff14d43198

          SHA256

          c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

          SHA512

          6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

        • memory/1780-8-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1780-26-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1780-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1780-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1780-7-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2084-1-0x0000000000230000-0x00000000002C1000-memory.dmp

          Filesize

          580KB

        • memory/2084-4-0x0000000002D00000-0x0000000002E1B000-memory.dmp

          Filesize

          1.1MB

        • memory/2084-0-0x0000000000230000-0x00000000002C1000-memory.dmp

          Filesize

          580KB

        • memory/2428-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-49-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-48-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-50-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-53-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-56-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-55-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-57-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2428-58-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2628-27-0x00000000002E0000-0x0000000000371000-memory.dmp

          Filesize

          580KB

        • memory/2628-29-0x00000000002E0000-0x0000000000371000-memory.dmp

          Filesize

          580KB