Analysis

  • max time kernel
    143s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 10:21

General

  • Target

    2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

  • Size

    808KB

  • MD5

    bb62a719079f90cf8a83271009403357

  • SHA1

    33db847b56d744a7306ee6d284e346bee7c7a1ba

  • SHA256

    2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181

  • SHA512

    f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156

  • SSDEEP

    12288:YeXdQ+QZ+rBMQQ/csKFxlkRD7oDTPEt4w+b6gA9NP8liSIgdbC:YsPQsrSPWaRD8HcT++nWdb

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vepi

  • offline_id

    EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1

  • 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/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 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: 0871PsawqS

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\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
    "C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1868
    • C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
      "C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4724
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\71cdf625-20ef-40c3-a996-23d6db4443e1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:696
      • C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
        "C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:924
        • C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe
          "C:\Users\Admin\AppData\Local\Temp\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3008
  • 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 --field-trial-handle=4032,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=4200 /prefetch:8
    1⤵
      PID:512

    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

      e4cacc9fa4adc8a6751aaf917c99e447

      SHA1

      d27c0b41d3fe6627c82ea3e6e762b1474f64ba51

      SHA256

      6ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30

      SHA512

      fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80

    • 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

      e35f58478c21729bfc929d6eda5b3d63

      SHA1

      27f5500f5c16ab42e0829d3afee874e51aa51727

      SHA256

      fae73d7ff794ad69ea82003f0cafe04e0dc4ba4a9b8034276c552af2a808aaa3

      SHA512

      20e91e0737e7d02910839f6f4334acd4a4661b7a7f651862394505ffeea3d91f40a0509afd6717c3a1a8c3df92e01796a72d1fb9c86257536152ca239a4b7abf

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

      Filesize

      392B

      MD5

      85b37b7e112b3624787de15847a733a7

      SHA1

      a33b6c56d2d1264417a76420ec5d88e2ee0a236e

      SHA256

      ed462408f40b5b7d8971b126bdc2e9088b5be4b10976077447570e5ec39474f2

      SHA512

      18ea855fd7210237842c815bc7d69ded984d15c9d501b0aad53c71aa8ca9aa27a4a45d1231c285d7ca8ccdf60e5f931715be1b30fa8f07324976fd7653589a26

    • C:\Users\Admin\AppData\Local\71cdf625-20ef-40c3-a996-23d6db4443e1\2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181.exe

      Filesize

      808KB

      MD5

      bb62a719079f90cf8a83271009403357

      SHA1

      33db847b56d744a7306ee6d284e346bee7c7a1ba

      SHA256

      2a4a54c4dfcfa57a60b00bacfde1e095f55f2dd99e27efee68f01d10a1c84181

      SHA512

      f09036502cb6ac7cb81df358ccfae65f2ca178760619e484f51a49c3bd262c87262c6de39563f49399687cb82b2918da35eeb7ea91829359e37f7c6502db1156

    • memory/924-25-0x0000000000400000-0x0000000002015000-memory.dmp

      Filesize

      28.1MB

    • memory/924-39-0x0000000000400000-0x0000000002015000-memory.dmp

      Filesize

      28.1MB

    • memory/1868-1-0x0000000002130000-0x00000000021D2000-memory.dmp

      Filesize

      648KB

    • memory/1868-2-0x0000000003CF0000-0x0000000003E0B000-memory.dmp

      Filesize

      1.1MB

    • memory/3008-32-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-37-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-41-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-38-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-36-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-22-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-30-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-31-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-24-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/3008-34-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4724-3-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4724-4-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4724-5-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4724-19-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB

    • memory/4724-6-0x0000000000400000-0x0000000000537000-memory.dmp

      Filesize

      1.2MB