Analysis

  • max time kernel
    144s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 16:22

General

  • Target

    09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe

  • Size

    710KB

  • MD5

    40036b013c2180c9327edb88b03fd68b

  • SHA1

    dd8e9ce493da9acd69f551b2767b25f5ae05fbd1

  • SHA256

    09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972

  • SHA512

    0a671b357a97612d201f035283dfa18185b64802a0ee604f9f229d1805db8fca51346f2a75ba7ff040fb059a1de74c1daa24e66ade3c204fff01f80b323bb816

  • SSDEEP

    12288:glBJwvsh726PM8q4jXEvLMSJzUrcmJFntBvA64LvJxY6rHpSRtL7favAWtcE7:glB6vJqM54IYgkTntNQvJzrHpAh7S

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\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe
    "C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4836
    • C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe
      "C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2388
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\dc03cace-e85c-428a-bfcc-bd533513b21e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2968
      • C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe
        "C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1900
        • C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe
          "C:\Users\Admin\AppData\Local\Temp\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:5084

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

    6728aea2631b86a76c237508d8ba9b55

    SHA1

    7a670f95cac088313f7558869162fe01c6dc0ec9

    SHA256

    e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

    SHA512

    533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

  • 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

    79e8608eddcd502ae2a6a52c11d851c1

    SHA1

    eb627e01b2f8ce9e4e886582d00fd532356c0c12

    SHA256

    3629c50dac4b797e611d69329c97aaa323cb4820a50eab287935cd19247fce98

    SHA512

    db5f747bee8607718ce43e5298708c15bf969a33f203c8d627f488de84b8d9ce48ff58573b47a9694b0a55192b88287e4c28489aa879bc3b8fd9fa65ed9d71cc

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

    Filesize

    392B

    MD5

    e61ca76489064679c99186aa629316d8

    SHA1

    57bcdb91b0a5b9a39c07accff6fe2b6bdaa07f7e

    SHA256

    d9f761603370045bbd5174ff51e2766485a84e9d1eb70c9e72eeb14d0a7b2e78

    SHA512

    005adde57decdcb1bf74c9c9a08e38edb5f787da027174fb124f6f8d8dd076385e09bcbdac173aafa581fcad6fc3433eac337e0e81d6f951b4fe223a90ac4776

  • C:\Users\Admin\AppData\Local\dc03cace-e85c-428a-bfcc-bd533513b21e\09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972.exe

    Filesize

    710KB

    MD5

    40036b013c2180c9327edb88b03fd68b

    SHA1

    dd8e9ce493da9acd69f551b2767b25f5ae05fbd1

    SHA256

    09484b9bdfb7a0f1486211178e0c36c45e5e0898466699ca1c1922b2f1f7f972

    SHA512

    0a671b357a97612d201f035283dfa18185b64802a0ee604f9f229d1805db8fca51346f2a75ba7ff040fb059a1de74c1daa24e66ade3c204fff01f80b323bb816

  • memory/2388-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2388-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2388-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2388-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2388-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4836-4-0x0000000004A00000-0x0000000004B1B000-memory.dmp

    Filesize

    1.1MB

  • memory/4836-1-0x0000000004950000-0x00000000049F2000-memory.dmp

    Filesize

    648KB

  • memory/5084-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/5084-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB