Analysis

  • max time kernel
    143s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 18:25

General

  • Target

    41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe

  • Size

    738KB

  • MD5

    05567327c48b4b2af47574295ee9748b

  • SHA1

    7595f946efc74526f2b989413e73e3f37c4b4765

  • SHA256

    41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925

  • SHA512

    293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea

  • SSDEEP

    12288:xIArWcHGmhaQSRJSYXYDNV+VA6Sy7ng50CgH969W6Cw:xo1JSrDNV7y7n1ldK

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 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
    "C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
      "C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.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\ff12ad45-d01d-4ed4-8db0-61cb70754f97" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2672
      • C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
        "C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3048
        • C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe
          "C:\Users\Admin\AppData\Local\Temp\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2776

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

    a97661ea82df9457de6e42b0eae25bc4

    SHA1

    faff1318303c561752949cea0813db9479c39ac3

    SHA256

    4d18d46a639e0899812ce81b647c2ae6969aa68598015568ed6cf83a763602e9

    SHA512

    acaa6d907e578ec63043704f8cbdb2082f4b940eae128068edbd3b7d8051278fe8a505256261fc7697c8879a0715c16950f1d81c2fe61ce27ad1fa7e89f12e3a

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

    Filesize

    344B

    MD5

    69fe966b7a876086497de3f2be45762a

    SHA1

    c58f805947816980095e8e24a6f3fe66fcae9048

    SHA256

    a1b7da3dc73254d5e13e1f782cadb4f77f77599a86f0aacd9fca1c98b5ed70c8

    SHA512

    0579e22d5b449bf140a4fdd6dc60068a578b495a74537e99ad4627a8bb13b1016d78edcde3a810e4bbb9abfc0df295355b2d1a8513f169243c4c9846e03ced9d

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

    Filesize

    392B

    MD5

    fc473cf2643629a54c08d1e2174b949d

    SHA1

    1d4633bb5b80a23be2a03c660a230571f7bdc772

    SHA256

    4c65535ecd8fc5c14280ce2a0164f676a3e321ef0b5c239abda2abcf3e05255d

    SHA512

    4755f92ad1b839f876cb9afb0dd6539ddee701697e189f79ff7dbb09ecfe4ae7a80426e778b1eb898d3bd64deae7e186fd82d8c1ff3430c972c5d5f5cec2acbe

  • C:\Users\Admin\AppData\Local\Temp\Cab2D57.tmp

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\ff12ad45-d01d-4ed4-8db0-61cb70754f97\41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925.exe

    Filesize

    738KB

    MD5

    05567327c48b4b2af47574295ee9748b

    SHA1

    7595f946efc74526f2b989413e73e3f37c4b4765

    SHA256

    41414ecd1275b4aaa6c0b82659b622a46426b599855cb402ace8358e42e18925

    SHA512

    293c0df46670b450a5a840a424ef1848a2dd8634a5e837b1ace4196ba76ba040dcb12a8a0397a4c1583af3d1b63227653999b64247f6b593ef5c1cf2ec33fdea

  • memory/1808-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1808-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2020-1-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2020-0-0x0000000000290000-0x0000000000322000-memory.dmp

    Filesize

    584KB

  • memory/2020-5-0x00000000023E0000-0x00000000024FB000-memory.dmp

    Filesize

    1.1MB

  • memory/2020-50-0x00000000023E0000-0x00000000024FB000-memory.dmp

    Filesize

    1.1MB

  • memory/2776-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-46-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-45-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2776-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3048-29-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB