Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/01/2024, 10:50

General

  • Target

    5ce52f628bfa89f48f929961d04fa6c8.exe

  • Size

    730KB

  • MD5

    5ce52f628bfa89f48f929961d04fa6c8

  • SHA1

    aa9c7a0e0721b6cc8a44ef28bd3b23328d8bcb7a

  • SHA256

    7912d5bd90e1c9427ef14e571589aab9017c823c16849976b6d2fc483fe34d10

  • SHA512

    a89eef90f56c652b7821d52b1695cf965cd56bf342f6747ac8bcc75a034f8a137e3ce6c37ed0a0e8ef76a7f26a8dfbab94ada5329836bd8c80a0a57873ab812c

  • SSDEEP

    12288:ldZWyTp94ZIAbE8+zauKD/3P1X8pBSMSjNwsAkDz11YEixpFgqzprF/qDc8FKU1t:5WyTp+ZIAglzatD39X8DSLJ1KfFgqzVx

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/fhsgtsspen6/get.php

Attributes
  • extension

    .nooa

  • offline_id

    PLtnD1U6oAmgxgJ2nJik1mY9SwUQg07CiN0zSet1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://astdg.top/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. You can get and look video overview decrypt tool: https://we.tl/t-CnI3tI6Ktv 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: 0322gDrgo

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe
    "C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3688
    • C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe
      "C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4476
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\24687512-fddb-4022-8c85-a5cd2313b300" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2320
      • C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe
        "C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3996
        • C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe
          "C:\Users\Admin\AppData\Local\Temp\5ce52f628bfa89f48f929961d04fa6c8.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1696

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

          b7470a9aa569b259d4c2bb3b80ae3aa3

          SHA1

          093290296b7f1e402ef96e4b33a88f064aa401eb

          SHA256

          ee8aeed77dd9f1631fa75845214d75bfe04951a61892410ee369035e13fd14c6

          SHA512

          4da3fc09260692f159c37b068664852931b712c8173de5e4b294799ac33ecf179055aaeb016fd0afad88cbfc50a571c4c88033dca56a573431af7462ea7979be

        • 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

          3d8124d4f9906bd9e4252aab6fd5790f

          SHA1

          334803f23b77c8b741c221c48e9188ca358ff14c

          SHA256

          5afdc156f0549741d00d8ef4200851081e682336a1058e06a9deb627f669fb78

          SHA512

          9c3f1903b1b815abf5ac7b3d8d5c984c6c6cdc4e3fce43b0c6d4ff8a725a553a0977d9a516ed743f3f222ceaaf67dbca8ecfeb700980e37b15da88ad0bc6b04b

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

          Filesize

          392B

          MD5

          05c9ce29ef34ddc3e63f5dc67120e130

          SHA1

          edee1fc2c7a033a03dd810f3f9d8a62c2411014b

          SHA256

          a23c5ba3aebd5f486f70d202f54e2506d508e492f177e2fe496f794ed1fa8e4d

          SHA512

          654e76e2889f25c469f8ae1fb38d07a2fd0025072e1a8132a735bca4ba9d02fdef03e46df92132d767657225eba4467ecb74342eb188a45df138896fe6989377

        • C:\Users\Admin\AppData\Local\24687512-fddb-4022-8c85-a5cd2313b300\5ce52f628bfa89f48f929961d04fa6c8.exe

          Filesize

          369KB

          MD5

          f6c60afc3994059536b8d00445177983

          SHA1

          5aaf7c2f63de2deebc23ca4282aaa25d608d3141

          SHA256

          c6b321ebc936c13314c9a4b312fb58dd35797338bb7ef0d7b7b15ab682180ed2

          SHA512

          345ffa7a918dd52038f0879e14b569cd002b3d230905c1a2748831a6808c27a2af8747a67ead82d7b8d02085397e3dbeed2bf0d2337f4bd87f3935f3f9c1cbab

        • memory/1696-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-36-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-20-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-32-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-28-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/1696-21-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/3688-2-0x0000000004BC0000-0x0000000004CDB000-memory.dmp

          Filesize

          1.1MB

        • memory/3688-1-0x0000000004A30000-0x0000000004AD1000-memory.dmp

          Filesize

          644KB

        • memory/3996-18-0x0000000004910000-0x00000000049A6000-memory.dmp

          Filesize

          600KB

        • memory/4476-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4476-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4476-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4476-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4476-16-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB