Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-04-2024 22:31

General

  • Target

    32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe

  • Size

    807KB

  • MD5

    f22a07f566c981eb20ff0b4919acc695

  • SHA1

    8885990f31137750ca6cf4a4ef90b36942f6f890

  • SHA256

    32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea

  • SHA512

    7dc4983c0bc68bcce53c8420bb4c049e2cab07d509a0ca088f9d0c1e4803ed2c20f90a985f55564ce51edf8a455b6be4f62f199ec3462bff8343d57f1f642bff

  • SSDEEP

    12288:O7L6TRDWnyGDwYzM3JailasHMVD1duYBjSwzP3hINNvYe+l:BVWnDwYM1lJHidugTzRoNQe+

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .bgjs

  • offline_id

    Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0863PsawqS

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\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe
    "C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3292
    • C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe
      "C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:876
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a7c12b7a-e2a1-4ef5-909d-556b0d9e3428" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3400
      • C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe
        "C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4440
        • C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe
          "C:\Users\Admin\AppData\Local\Temp\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:5056
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4060 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1892

    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

      23c3647724cc7d7f2fd92c7d36600f25

      SHA1

      11db3eca57631a679c174dfa364802fc6e841076

      SHA256

      b470d6bb0e33983041874f283d681bd6352325618a8b3b4c85321a8749f369b7

      SHA512

      aceddffd0cfa38e431910877804b7788bb34f4dd544d2691e4a2219c9ff59796c9f31c42b66f195b66ba6f33cd84fde7b7a04a053e8acc135531ccfffb3c41eb

    • 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

      0ef6fb8e443e214bfc3a7777d1cb9068

      SHA1

      dd6ce35482c96ce600bf0681d2f74016b8343bb2

      SHA256

      9307db6a012854981591c46b61609daf59e2f6afbf204f09f9696c4aa87db97f

      SHA512

      cf4f24048c9e5607a382ae023890e50d4e1ffbdc5c66eb5b8eb1ce27e72a096cd3dcfb7f653d4d346ced62a515b6d4b9108be3fb400f59b66b735c4b0da1f9da

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

      Filesize

      392B

      MD5

      c6aa1d416d5554ee09d3c78c5fe42d49

      SHA1

      b11de8ef5a0cc71243eea0c1923623b01506c63f

      SHA256

      d6f11f4782740342f3d41ded2535ae31a4778a6671f4e92b47ad7d114f11f985

      SHA512

      6b96d384b1ffd99de4d1f16bc216cbe8f5a5aab447ee293f9a88908bfd56fe3a4ece48229887b86c6b83bcec71950d4b253c74ec09b7db287df627f7e2ce3680

    • C:\Users\Admin\AppData\Local\a7c12b7a-e2a1-4ef5-909d-556b0d9e3428\32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea.exe

      Filesize

      807KB

      MD5

      f22a07f566c981eb20ff0b4919acc695

      SHA1

      8885990f31137750ca6cf4a4ef90b36942f6f890

      SHA256

      32ca82ed5bd55e19ba8bbfe9381b52c3b6c0231ccd468bf52582e14c17e001ea

      SHA512

      7dc4983c0bc68bcce53c8420bb4c049e2cab07d509a0ca088f9d0c1e4803ed2c20f90a985f55564ce51edf8a455b6be4f62f199ec3462bff8343d57f1f642bff

    • memory/876-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/876-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/876-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/876-27-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/876-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3292-2-0x00000000037B0000-0x00000000038CB000-memory.dmp

      Filesize

      1.1MB

    • memory/3292-1-0x0000000001BA0000-0x0000000001C35000-memory.dmp

      Filesize

      596KB

    • memory/4440-20-0x0000000001D20000-0x0000000001DB6000-memory.dmp

      Filesize

      600KB

    • memory/5056-45-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-25-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-35-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-28-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-37-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-40-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-42-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-43-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-44-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/5056-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB