Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    23-05-2024 04:04

General

  • Target

    519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

  • Size

    711KB

  • MD5

    07116bba4c9f651cf2c4327698483aa0

  • SHA1

    02a9fc8459c6ad451ba571146d5211664b4276d3

  • SHA256

    519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

  • SHA512

    d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2

  • SSDEEP

    12288:o4Amb9t3hc0lMxKvp30GfaOztaHNdvPRROnLTfp1WPhbFXMNZMCHcBiFBcDW7X:o49bLLgQ50GfaOzCnvPRWLV8PRFXMPHj

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 13 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
    "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2008
    • C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
      "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2172
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\bcb40505-fb85-4613-8817-36ef78219cec" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2908
      • C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
        "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2508
        • C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe
          "C:\Users\Admin\AppData\Local\Temp\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2484

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

    7575c39a544943a68ce6e709c586005a

    SHA1

    4874b30bd1d455b28a95c4e21c5aecd1ea043d7a

    SHA256

    4737de49245ace1ca1fdeaacd5feee9bbda88bc6f42c84a1ea7d316383792cf8

    SHA512

    abf3d85393725113e720cbe8980b369236511e3984e8cbfa795f19bb5d6e39822e80a835caeb498581797a74b349765ba1a27f26586a17a66ae1c88bd066a3d1

  • 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

    09d7a5c0961575defeca5ffcda21e8b4

    SHA1

    c42587cd4278c0937c2bcf3df37af6dc08189a41

    SHA256

    710f0746b4f1b69d1c2576752d1a267dd35e6b4dfc8b47ddb9a4458a8af47928

    SHA512

    93f67a67de7149ada0f1f0c3e01c2d2c72d0cdf46a8d0534d4c1eb630c3de9b74bc48ea8c16109f5b753ccb1451ad26e7e81c4c17e8bba68302d49b7d129db49

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    f32543cff124d22be350d225586f8dad

    SHA1

    85431a2836025ed9b382744153dd976eebe0c53b

    SHA256

    a3a757614e2447c77eb242b75be6a2cb4cba70885635ff1b0f80de8e30cfc59f

    SHA512

    7a94094afab68b838b102ec87f44ec19a473b4723001f19d92801f113cd2f24628ee6161cef5753501a6504353b1b7ce529e77591f68b8f10314d7b9c05d3c12

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

    Filesize

    392B

    MD5

    41b149308a67a7dccd2a5d49f81d7e3d

    SHA1

    875eb22d07c105b0ccfecbf31c8b2a8c881ea335

    SHA256

    4575e9d072a0366f6d5e52b1fdb4962916f1778ea5987eedfb8cb248d43162a9

    SHA512

    bd4cc32e5f8e6ed9e0c4825ef1b5cf4d0d010929b1a7ea52192e60c427854af9cfbc2c5345867beca1750e91f7c963d78720a9ca9ac9824f627c44aeb68bd4fc

  • C:\Users\Admin\AppData\Local\Temp\CabCD3E.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\bcb40505-fb85-4613-8817-36ef78219cec\519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d.exe

    Filesize

    711KB

    MD5

    07116bba4c9f651cf2c4327698483aa0

    SHA1

    02a9fc8459c6ad451ba571146d5211664b4276d3

    SHA256

    519411833bee98ae20a5e99db24abb89266ec25471673b6d32d6cebce49a9d6d

    SHA512

    d825dc67fbf663e6f193200aed834da7aa46396cd13b48f3c47298e984347730df7a99e48dd6b6e4b06805004ced2a2a761d626b1ebeb88e9607062e0f493ae2

  • memory/2008-2-0x0000000004620000-0x000000000473B000-memory.dmp

    Filesize

    1.1MB

  • memory/2008-0-0x00000000002B0000-0x0000000000342000-memory.dmp

    Filesize

    584KB

  • memory/2008-1-0x00000000002B0000-0x0000000000342000-memory.dmp

    Filesize

    584KB

  • memory/2008-7-0x00000000002B0000-0x0000000000342000-memory.dmp

    Filesize

    584KB

  • memory/2172-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2172-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2172-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2172-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2172-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-48-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2484-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2508-30-0x00000000002A0000-0x0000000000332000-memory.dmp

    Filesize

    584KB