Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-05-2024 12:57

General

  • Target

    d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe

  • Size

    709KB

  • MD5

    93c4185d6bd7d35620815e99aa6d9f2b

  • SHA1

    01c3bfaffb1496d0b4b2d52e21db58dc76d2dd39

  • SHA256

    d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697

  • SHA512

    8f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0

  • SSDEEP

    12288:w/JSh8Uu2rB9DIuiqetcEFT39g+0qzyvbtvQRXUyfZwj:wBShZrTDIsmFD9FWvsvBs

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 15 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\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
    "C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:712
    • C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
      "C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4532
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\61e90a1c-ce1a-412b-9a07-2a04475cd375" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1532
      • C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
        "C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4316
        • C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe
          "C:\Users\Admin\AppData\Local\Temp\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4280

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

    df80f9ba75076db634761b6132e0d4e3

    SHA1

    07983946fb660752c7cccb2ef82d01ec4c9ecc5d

    SHA256

    d5ff96fd8b416de93a85783192206224cf8821c240cd8ff755f2e8270153dd99

    SHA512

    4ec734c5d29e9ce00b00e42b627253195e8c7a158433fedfcee428e692a6501981c33d7c8a39235f8b691f087145cdbe660b430493edbeedb12588c5cdd5a66a

  • 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

    570cbe925b75ee7d442f54410c36fb24

    SHA1

    9563946019cacfcec9d7eaeca642381f12d4b660

    SHA256

    e145bd4fe6d1b6cdc438e24beda744e1fd24dcf7fbb6932f152e9aaf0edb855b

    SHA512

    b53970e6c64d8de1887d2a150cbc2cb79b27ee30f434e91481d5a16cd3d6ff3decf09063d6123a2f149d80a3f750bc1805d50beb226e97b81e2f18ff0bd21064

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

    Filesize

    392B

    MD5

    4394fb21dc453052a86831f1fed996db

    SHA1

    15111a498f1a2dbe7ce0881f18d17eb42fee1067

    SHA256

    396dbb4e24085f93fd15672647d489550b047faffe0af9190a3b0cf91178d417

    SHA512

    51ad74fd36d072d8d4eec8d93af25548a55fc45c92a85607cc1290f02c393c8f142d3cc2aa34f73a31f881511b692c9e28620b6929e46d3aaf1661ed04a36eba

  • C:\Users\Admin\AppData\Local\61e90a1c-ce1a-412b-9a07-2a04475cd375\d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697.exe

    Filesize

    709KB

    MD5

    93c4185d6bd7d35620815e99aa6d9f2b

    SHA1

    01c3bfaffb1496d0b4b2d52e21db58dc76d2dd39

    SHA256

    d90d58df54d765277aad8627085dd15a61b0fafbc794f14b5f81a42807408697

    SHA512

    8f21de65cc56a4c20a3211b6d598b748c1115d08cb44d2f086c6b5e5c26b3e572b956a361d05e8c2495a8e43097ba79b1f49c73e097f4f9d8a65664ef95722f0

  • memory/712-2-0x0000000004110000-0x000000000422B000-memory.dmp

    Filesize

    1.1MB

  • memory/712-1-0x0000000004060000-0x0000000004101000-memory.dmp

    Filesize

    644KB

  • memory/4280-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-25-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4280-30-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4532-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB