Analysis

  • max time kernel
    143s
  • max time network
    124s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22-05-2024 05:01

General

  • Target

    ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe

  • Size

    710KB

  • MD5

    967be9af9f69700577c315c55b878f49

  • SHA1

    67a95ed7f485a44aee16acc3ed99e817e8b9be66

  • SHA256

    ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea

  • SHA512

    4ce1f72258d3072237588601666514ad5774a8bc11ff8b774f2a6e38b6bb23a71efd39ab7d700c498bf583eba15d238b415e17c62bb579de75aaef39eef183dd

  • SSDEEP

    12288:aOU+1CSxBvchOx4PEKJ3bId2K2IkepPQS00X+BuW+5a8eqc43LRJXsvWk:aORCS/aVEmrIdV2IkG90RBR+7eqnRJo/

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes
  • extension

    .vehu

  • 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: 0872PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • 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\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
    "C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2988
    • C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
      "C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2984
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f52ddfc3-99cd-4a49-ad72-d58b0bce7c4e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:4848
      • C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
        "C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2104
        • C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe
          "C:\Users\Admin\AppData\Local\Temp\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1180

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

    cb35bd9d6c5a4fd50a9263018bbd9784

    SHA1

    efec24f93d2af7bd01969c36870ebc928fa6c790

    SHA256

    be648ee93df285417e494e28c01e3ab8f3d043845f4d3b397dfd137d187ed612

    SHA512

    ac26182fb167458da4b465b118720470859e8028db8d3d71ddbe0c5be0e46b9178c5f7ccb8b1252c38754e27da1af546f8d2f6e32e1bfcbeac0d510aa831bf11

  • 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

    f3a585ec62bd97f4098a7498a9e1291d

    SHA1

    d083569ea5d376ecff31f2518cb3a0f8a5c2c3b2

    SHA256

    0caa95ed957e76584e72ac689ec9b12bbf27acad7ce80035975b75fcbacbe22d

    SHA512

    d2d23c0101041459e31403568a35fd75db3eded561f158088be2c15416feb3595ee4f7e2bbbdb8b7375e318ffe714a34dcc8e768db40e265b8c60da20553ac41

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

    Filesize

    392B

    MD5

    a3862dfca80cfda4dacd1480e2cc3f8f

    SHA1

    b7c457f0e8d5b1c6acbb54bc6c470b061d2ae3d9

    SHA256

    91b4d9577668b332f69d33b68f2fc12ebddea4f5b8a48c565ca3b1fd30339048

    SHA512

    ea8d631e690e6ff2bc92cd77a43d4c8e92e16803fcef174bf19816895122d6a3d1541661648e67fd3573b9256d2c98c75efe31275a9854b29185b9c2c14cc8db

  • C:\Users\Admin\AppData\Local\f52ddfc3-99cd-4a49-ad72-d58b0bce7c4e\ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea.exe

    Filesize

    710KB

    MD5

    967be9af9f69700577c315c55b878f49

    SHA1

    67a95ed7f485a44aee16acc3ed99e817e8b9be66

    SHA256

    ddfe99e9494e00eecf0e20fc856edbe7d1763131790c60e6d307ead14df3d1ea

    SHA512

    4ce1f72258d3072237588601666514ad5774a8bc11ff8b774f2a6e38b6bb23a71efd39ab7d700c498bf583eba15d238b415e17c62bb579de75aaef39eef183dd

  • memory/1180-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1180-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2984-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2984-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2984-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2984-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2984-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2988-2-0x0000000004BE0000-0x0000000004CFB000-memory.dmp

    Filesize

    1.1MB

  • memory/2988-1-0x0000000004B40000-0x0000000004BDD000-memory.dmp

    Filesize

    628KB