Resubmissions

12/05/2024, 21:30

240512-1cjvlsbc69 10

12/05/2024, 21:24

240512-z9hs5sgb3t 10

12/05/2024, 19:58

240512-yqasragh24 10

Analysis

  • max time kernel
    147s
  • max time network
    126s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    12/05/2024, 19:58

General

  • Target

    2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe

  • Size

    732KB

  • MD5

    cc552b395d413f2aa065846c3e01fa9c

  • SHA1

    eaea89d0ee044e537e224c6e128e54ca4447e7a2

  • SHA256

    2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff

  • SHA512

    55435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348

  • SSDEEP

    12288:9GBVPi9/6zy/CfGymlA8oCrFgAW/7pI1fLd7HAdf5RT0IyD:9G+6z8VFr+Aq78fROw

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .paaa

  • offline_id

    QpSpHegISEXzDsMT78wU4MUmX8Ptl2rkBOQjG2t1

  • payload_url

  • 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 $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0870PsawqS

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 21 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Renames multiple (159) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Executes dropped EXE 2 IoCs
  • 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 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
    "C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4152
    • C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
      "C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1636
      • C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
        "C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1096
        • C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
          "C:\Users\Admin\AppData\Local\Temp\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2024
  • C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
    C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3008
    • C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe
      C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe --Task
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

    Filesize

    1KB

    MD5

    84721cd35068ddfc92aa0a4c829fbd2a

    SHA1

    71d7e227e0f3fcbb585598d0f3757a8935b748ce

    SHA256

    bf8250097eb58e963c7cd636093d2a332647af517ad22ddebe1765703b8dd199

    SHA512

    f08b89715c28ae36927316d6fca1716dbd9e935edf9d7e979586c4e4610fc29c83514e2385dbf43e7227f8275603c5cbd85c2a098be6ada95aee1a24c5e23dfc

  • 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

    62625d7e9e73d1876539722e5f4234c9

    SHA1

    fe3626e4831d5335e0a190e3aba17a50eb56df87

    SHA256

    3735590445920e20ce6ba95f2c3ffd8a856afc2485eba3ec0d46122ae96ddf91

    SHA512

    bb7b685f59af6b0ababd83decfbc9a771efa6ec2fad65312b5c9311ea7727dd9a9fa391f31c0409ae63584d69887d186c7a57e04abaab7420076650e2b04f5aa

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

    Filesize

    392B

    MD5

    2998971f6d94aa0786b268a35d0ce451

    SHA1

    8bc0c7e3f7f9e9ba5d134abe90cbcc30362d9a80

    SHA256

    8811180e4da8fe188b3b1e9b8ec9ae6ddcd07d7a9175e490afde51aa6107bd4a

    SHA512

    eb4dcdcf1f6ff95b0a201bcd36fb7446ec7221bc43a7323aa210fbacb3db01698eed1c18fbe4cc1d79dd68995e3718c6789597610ccb7010222d2592de80ca5b

  • C:\Users\Admin\AppData\Local\1f09a217-c941-40ae-bbce-f097b1003618\2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff.exe

    Filesize

    732KB

    MD5

    cc552b395d413f2aa065846c3e01fa9c

    SHA1

    eaea89d0ee044e537e224c6e128e54ca4447e7a2

    SHA256

    2bd6f0743a3ecab9f463af0a244ccf98bcc0fe5a3f28f048dbb15112e5a214ff

    SHA512

    55435dcc2813f6242cca6c444c2288676de691c31f89c4f6bb01775e5f8edd91d848d359054eff5d37e7bd96eb1679c74f9be3b7503e20e6f7b670ca7059a348

  • memory/1096-25-0x0000000000400000-0x000000000080E000-memory.dmp

    Filesize

    4.1MB

  • memory/1096-24-0x0000000000400000-0x000000000080E000-memory.dmp

    Filesize

    4.1MB

  • memory/1380-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1380-40-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-31-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-368-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-43-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-367-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2024-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4152-4-0x00000000025B0000-0x00000000026CB000-memory.dmp

    Filesize

    1.1MB

  • memory/4152-1-0x0000000002510000-0x00000000025A9000-memory.dmp

    Filesize

    612KB