Analysis

  • max time kernel
    145s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 26 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:3864
    • C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5020
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\83424aee-9955-4559-b024-016c853d1f90" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4204
      • 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:1188
        • 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:3968

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

          02fc04a05f0ab5b286ca315ccd1d0afc

          SHA1

          8922bf13880c9ae26a18fec2585fb90baaefa97c

          SHA256

          80ccbc092f36b25cd6140e6aac7716db1bb0ad0f95d7d3eddf9c0d808360c760

          SHA512

          91bd335b6845756586b0f7c630d5ead7fe3a4ce9c8581b1541436c4399ac00c52a80ed471c7d04207ebafab62b99668724c0fc60a552f223f3309edddcfffa21

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

          Filesize

          392B

          MD5

          0cb61ca512884acf25d2ebbda01513ce

          SHA1

          41ebe16290aaa63ab7cf9b7f90b8f828524bd9c6

          SHA256

          bae7842eb139a77a8a8fe83438c2935f9debaed3bc8db5e25e8fd4e32a0606f8

          SHA512

          ae5fe9dbb980bb6d824d1edeb08da551d63cd7314cb7b6b2937f5b934962865baf52038d6902dbe00a551a6e44eb57136a047c77f6cc63ee6b5453ed6d782c5d

        • C:\Users\Admin\AppData\Local\83424aee-9955-4559-b024-016c853d1f90\e950889fc7f88cbc4408d934e2e220f6_JaffaCakes118.exe

          Filesize

          799KB

          MD5

          e950889fc7f88cbc4408d934e2e220f6

          SHA1

          cefca2c4538365655cb1eead3f3390313b9ea18a

          SHA256

          a4520e17b63c5503219d9c36435b26054ac63e4539883c5244b3129535d82879

          SHA512

          82b07bab3625f0f6abd85f477ebcd6df334ac1f7e9a186dea82e9101c14b4990ad461aa552df27ba3b121b799c2f164335524b1309f7bb96ef1eead5675ad7bb

        • memory/1188-19-0x0000000002FE0000-0x0000000003073000-memory.dmp

          Filesize

          588KB

        • memory/3864-1-0x0000000003300000-0x0000000003399000-memory.dmp

          Filesize

          612KB

        • memory/3864-2-0x00000000033A0000-0x00000000034BB000-memory.dmp

          Filesize

          1.1MB

        • memory/3968-28-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-21-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-20-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-33-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3968-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5020-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5020-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5020-15-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5020-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/5020-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB