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Analysis

  • max time kernel
    292s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    01/05/2024, 22:47

General

  • Target

    2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe

  • Size

    802KB

  • MD5

    0779bb0f196e0f569113456aac677a3d

  • SHA1

    fe8c4330c4a00c6931c68a41fee99bede478a902

  • SHA256

    2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a

  • SHA512

    73cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe

  • SSDEEP

    12288:99WFA2R+3gfJn0qEH5S6xuyu1TUDJmHiYyMVEUcejAFTFHDkT6jj7PjEbhV:ChaLxuNtXioVSJHDkTQjbjEbh

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test1/get.php

Attributes
  • extension

    .bgjs

  • offline_id

    Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1

  • 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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

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 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
    "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
      "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2352
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0bee8a8b-6d11-45c0-af15-2230e321c107" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2732
      • C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
        "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2472
        • C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe
          "C:\Users\Admin\AppData\Local\Temp\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          PID:2624

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

    56282e3f56542f67e60909a4345c5a35

    SHA1

    1a627ec9980ee9e3f5846da3b63552122032f78b

    SHA256

    719698173bbfbb3375c5e0c43342f785c76727fcd6560364e0d9bec77232a6f5

    SHA512

    291a1569239659ae5c1466d324f6c0114653f2b1578e59f1f340decf189aa38ccf9599c2005551e09ce94f2bceb94f64773181fc011dc1167edd4aa9b1b4d11e

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

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • 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

    ebf727f4c13020d9a831f8028f5233e7

    SHA1

    236b33253ea22a8b14f480b77f7a086c334be6a4

    SHA256

    fc1fda1b5014e2058b4b792181bee6abcb131f9ac68ef91ce3ebbaac20e2a3bd

    SHA512

    270ea6f52098ba3b60f7825957ecace3272ad9a3d8edfd18f6370a43f2cfed77e165ff5681af20c94a827d4b96e9a8a4afceb10a48782c0b8a58b1d2a7aaedd0

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

    Filesize

    344B

    MD5

    f128a5d4c85cca506a1ce1ffa42157ee

    SHA1

    3fccf8fb865c4139dd0377b0d625bf5b6f689d8b

    SHA256

    5a3c880d778305e8885c0333c0ee336c85e7b20455d6d13903ee4efef84af26f

    SHA512

    ed8e8ff1c806415fc12bd18d70538806e33fa410e18703c65d8010d85a7aa552a14f46fc7f08f64806e39694c460f22f0fa2956d9e2bb09209356a81167bcb48

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

    Filesize

    392B

    MD5

    b6285d516fda759c44b7f28f13c84d68

    SHA1

    a832bcf2c8f07ac3239a1bf14edad98efd5bff64

    SHA256

    35b214a924d65ca1e2b252fdbf37ee1118291f07a77f2f9fbbb427ee7392e051

    SHA512

    03e9db7d7ff659789f19051c954da53efcc8768427d2450e064e6e98d088b331fbaec684ebe1aa3b168e3f8d65898fb8d68eff8a2ddbc09e2679a52e2fceefdb

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

    Filesize

    242B

    MD5

    fe31fb5d91ba3998bfe6fe706d3914e4

    SHA1

    69b335aed4333201f53fb15c054029a5d7ed7652

    SHA256

    4ee397b6b75d618c332511e63ad53c89de66e7bdd2b58c9ef9069f11b3d08430

    SHA512

    291a95ffaae2e441e9dc35d63b3d4007d7f07bc7be084f6b3c2a069086f544556adfd8f249dc08dd54ec49da3802cc33c1aebc5133b77007b3a0b8e1a1a8bcfb

  • C:\Users\Admin\AppData\Local\0bee8a8b-6d11-45c0-af15-2230e321c107\2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a.exe

    Filesize

    802KB

    MD5

    0779bb0f196e0f569113456aac677a3d

    SHA1

    fe8c4330c4a00c6931c68a41fee99bede478a902

    SHA256

    2f82408849237d1795ad71007139db9b9cd99d77f97554a71f0d34821870756a

    SHA512

    73cee4415e796d71ca6b3b91f95a917fb8c926453279210c0500c17d8b2292e4183588b4dbd6293ff9945cee0dc0ef921e7316c2500106254eb4e34ada8c86fe

  • C:\Users\Admin\AppData\Local\Temp\Tar1508.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • memory/1600-0-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/1600-7-0x0000000003440000-0x000000000355B000-memory.dmp

    Filesize

    1.1MB

  • memory/1600-4-0x0000000000220000-0x00000000002B2000-memory.dmp

    Filesize

    584KB

  • memory/2352-47-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-1-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2352-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2352-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2472-46-0x0000000001B10000-0x0000000001BA2000-memory.dmp

    Filesize

    584KB

  • memory/2624-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-68-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-71-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-73-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-74-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2624-75-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB