Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    10/12/2023, 17:35

General

  • Target

    file.exe

  • Size

    841KB

  • MD5

    89f6a0761eb024c46520a74abb7868a9

  • SHA1

    46f30dd561d328e61261ebe13f86340d0641de68

  • SHA256

    2dcb65f18ee5ff985d4448c2bc01ecff8c1e379d969ef09591789dde8dd1d534

  • SHA512

    61e5074a24deb928796edb7ccc2b57039aa6fbe6b9b8b216faa8e9e8dd549fbb84dae1e0ddbd2f142c92cb60dcb3075fbe05edf51255500647a59dea18a62316

  • SSDEEP

    24576:5RvxJ2drWwS/kpBuOYNT0CpzbyfaQBQ246qgBvk:7vxJ2EwS/kpn6h246Vk

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .hhaz

  • offline_id

    gG3wF8nDWRqLztkHPAxMzpvNVlmLBMgQKmKiCNt1

  • 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. You can get and look video overview decrypt tool: https://we.tl/t-5zKXJl7cwi Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0835ASdw

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).

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Users\Admin\AppData\Local\Temp\file.exe
      "C:\Users\Admin\AppData\Local\Temp\file.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1820
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\6c11da9b-540c-4a8b-8fca-f0ecfb7bc693" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2256
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2460
        • C:\Users\Admin\AppData\Local\Temp\file.exe
          "C:\Users\Admin\AppData\Local\Temp\file.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:1720

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

    41ff3625b90b75348d1313e787e41cd1

    SHA1

    b9034fd0f7b6dfb7a1fc8ad3b2e13425205789e1

    SHA256

    e79d41c0938399b745f9aa779e5606cc5554907b1d01c75cc77ff04f8dd1c15c

    SHA512

    f795a72e365bcb1ad4a97d409e139d888d9d9bd02b4c4feed9ab4fb1332afb4907840bc72ed2c3460ec1875902ee433dd0a8b8dee5734c2cd3b89ac337a2d222

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

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • 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\Content\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    1KB

    MD5

    a266bb7dcc38a562631361bbf61dd11b

    SHA1

    3b1efd3a66ea28b16697394703a72ca340a05bd5

    SHA256

    df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e

    SHA512

    0da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc

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

    Filesize

    410B

    MD5

    0b385940d30220f146feb78c3cab12e3

    SHA1

    1d05a8c50a42fe2fd26feb3afe51de3a7384cc1d

    SHA256

    6e00438ac0103ddd5f820f9782404b2674ae054bf671542dca1770dc2c15668e

    SHA512

    827d54c381e6415548a8a2393dcc773ca3579750c61f6dcf59d4dd2231df3c0291a650cc1a67b74cbe0494ee8d6e646f5a86157f7e44d33f9455f96c396ac8b7

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

    Filesize

    344B

    MD5

    3009801b1156369f83ad7f4fa41462a2

    SHA1

    1a67965b318397e451d26726c432afd51e446e8f

    SHA256

    51856fdc393b542899c099fbf8ba1738fa4d5c7e35370d811a1d3d73a01720fc

    SHA512

    ab538766d1bd83487b875fb2e4e2ee9d0a2fac16cdc4509b4016ae851fba35aee8f03a788cd341e841e9e3c6bfa078a00d017881a1f3be68658b1cac5e0e0962

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

    Filesize

    392B

    MD5

    2f72309fc64afd49f5e35f00a5ab3a83

    SHA1

    baeddf8c93d8bc0e2525a31692166306d4a1aa43

    SHA256

    a926c6e154658cc1f49de0f2c5b60af7b5aba920992604a531f71222e2dfe06c

    SHA512

    873f65c530a6e8a83da6be59103341522c6855f9aa1766c8429acef7efabbb97acb7979363f96a1ae6e01ab67ddbf98b1e5efcffb9c47c39c80046d69fba32e9

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\F0ACCF77CDCBFF39F6191887F6D2D357

    Filesize

    242B

    MD5

    38982ed5066c221c9837e944068c52cb

    SHA1

    70cfaf7c5afdcf426c4f9a7d901c54528a5822b1

    SHA256

    8672fffeb9a57e162c40e86606cde506bbe10856b18391eb1b159882a83c448d

    SHA512

    9a897302ffd5e1871393bbf2968efb60acdde1c308d3e99de8a64f376f1239668d0998e6a4ba484c0806e22895d6b01940c8282ad17e56ed2d3c4a454b75a8f9

  • C:\Users\Admin\AppData\Local\6c11da9b-540c-4a8b-8fca-f0ecfb7bc693\file.exe

    Filesize

    841KB

    MD5

    89f6a0761eb024c46520a74abb7868a9

    SHA1

    46f30dd561d328e61261ebe13f86340d0641de68

    SHA256

    2dcb65f18ee5ff985d4448c2bc01ecff8c1e379d969ef09591789dde8dd1d534

    SHA512

    61e5074a24deb928796edb7ccc2b57039aa6fbe6b9b8b216faa8e9e8dd549fbb84dae1e0ddbd2f142c92cb60dcb3075fbe05edf51255500647a59dea18a62316

  • C:\Users\Admin\AppData\Local\Temp\Tar30D1.tmp

    Filesize

    128KB

    MD5

    a34be899401d36f5ef0ed9d1bd4b2ffc

    SHA1

    49ab851a4c1c36c79895ad5e63078c85e6db4486

    SHA256

    bec03bf3bfe6a20bed12efe3ba625c1a31df2d8c5e008085de11f76cffe695a8

    SHA512

    68291fac36f3b7df0166fd7b689c735e220a5b200512eda4e38a6d81255a8d4d7155efa928230453d854277b753c86c02a46d09b73afe1ba842940bcc55c2e2b

  • memory/1720-69-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-53-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-79-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-78-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-77-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1720-75-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1820-44-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1820-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1820-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1820-7-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1820-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2308-1-0x0000000000C30000-0x0000000000CC1000-memory.dmp

    Filesize

    580KB

  • memory/2308-4-0x0000000002580000-0x000000000269B000-memory.dmp

    Filesize

    1.1MB

  • memory/2308-0-0x0000000000C30000-0x0000000000CC1000-memory.dmp

    Filesize

    580KB

  • memory/2460-45-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB

  • memory/2460-47-0x0000000000220000-0x00000000002B1000-memory.dmp

    Filesize

    580KB