Analysis

  • max time kernel
    297s
  • max time network
    300s
  • platform
    windows10-1703_x64
  • resource
    win10-20231220-en
  • resource tags

    arch:x64arch:x86image:win10-20231220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28/01/2024, 22:22

General

  • Target
    73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
  • Size 700KB
  • Sample240128-2aezbachfk
  • SHA256 73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • djvu

C2
  • http://habrafa.com/test1/get.php

Attributes
  • extension

    .cdcc

  • offline_id

    LBxKKiegnAy53rpqH3Pj2j46vwldiEt9kqHSuMt1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.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. You can get and look video overview decrypt tool: https://we.tl/t-iVcrVFVRqu 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: 0846ASdw

rsa_pubkey.plain

Extracted

Family
  • vidar

Version
  • 7.5

Botnet
  • e7447dc405edc4690f5920bdb056364f

C2
  • https://t.me/bogotatg

  • https://steamcommunity.com/profiles/76561199621829149

Attributes
  • profile_id_v2

    e7447dc405edc4690f5920bdb056364f

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

Signatures

  • Detect Vidar Stealer 5 IoCs
  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 12 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 3 IoCs

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

  • Suspicious use of SetThreadContext 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
    "C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:192
    • C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
      "C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4112
      • C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
        "C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:692
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\f1f7ff91-5752-417d-8837-22f25ae2fb84" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1920
  • C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
    "C:\Users\Admin\AppData\Local\Temp\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe" --Admin IsNotAutoStart IsNotTask
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3624
    • C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe
      "C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4844
    • C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe
      "C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4384
      • C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe
        "C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1896
  • C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe
    "C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe"
    1⤵
    • Executes dropped EXE
    PID:3028
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 1560
      2⤵
      • Program crash
      PID:1028
  • C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
    1⤵
    • Creates scheduled task(s)
    PID:5008
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4676
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1868
  • C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
    1⤵
    • Creates scheduled task(s)
    PID:216
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:3068
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:3056
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:1856
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:2720
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    PID:5052
    • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
      2⤵
      • Executes dropped EXE
      PID:4652

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
        • Size 1KB
        • SHA256 c5dff2b8854fb9ed981ebdb1d6b621cf681bd1ac18ac44b14c138cd05352365b
        • MD5 SHA1 SHA512

        CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
        • Size 724B
        • SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
        • MD5 SHA1 SHA512

        24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
        • Size 410B
        • SHA256 1f756c5bbdca95c4b45f73343c91a775782769e59a3a4a729d14865b9e900db4
        • MD5 SHA1 SHA512

        CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
        • Size 392B
        • SHA256 6c68db67669e643b19122a73ae30e53ec692a61f3fd36cfa0b6b534da56def2a
        • MD5 SHA1 SHA512

        build2.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe
        • Size 148KB
        • SHA256 1bd8c5d8f589f49c412745836a6568e65d7ebf2a470ac294d53135b4eefa53bb
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe
        • Size 165KB
        • SHA256 770ac7f55d502650bf4826a632010db15ad888b3e1e71e9331b1afd85cfa0638
        • MD5 SHA1 SHA512 SSDEEP

        build2.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build2.exe
        • Size 115KB
        • SHA256 e9f661523d88a61c714a40807507499c9fb4da7a6923d2f40ebe77458b5d390b
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe
        • Size 261KB
        • SHA256 e3ccd13a719c2d7eb61635ad8560872ff4a9819d0ce05894de8701967a66e87c
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe
        • Size 209KB
        • SHA256 63e6667fbdeb799cc9539d4d41d8755e5a422b25f216c13de16a9a77fe6ee835
        • MD5 SHA1 SHA512 SSDEEP

        build3.exe

        • Path C:\Users\Admin\AppData\Local\3c952637-fbe0-4a15-b21c-54ea30deff26\build3.exe
        • Size 155KB
        • SHA256 6df69c986dc13a8d19d87795aaeb79fbccac008659083fe7122f47edea1cbb3d
        • MD5 SHA1 SHA512 SSDEEP

        73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe

        • Path C:\Users\Admin\AppData\Local\f1f7ff91-5752-417d-8837-22f25ae2fb84\73dbcb05d7ca048213fdb1c083b084f7a87e208ee6dfd9634840c5cedbfc5027.exe
        • Size 55KB
        • SHA256 a0e73a104ffbc3916973d7b3db3d83c014e677407a79c2caa991ff3a811fc976
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 148KB
        • SHA256 077f8ab33239f06ad65cf2d9e5b03255552a61b2709664098328c4b1c23a9324
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 268KB
        • SHA256 c1f7d5033182e9be6fa1dee67dce7c593be579b1244cd08ad901bc95960fe79b
        • MD5 SHA1 SHA512 SSDEEP

        mstsca.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
        • Size 299KB
        • SHA256 fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408
        • MD5 SHA1 SHA512 SSDEEP

        memory/192-1-0x0000000003030000-0x00000000030D0000-memory.dmp

        memory/192-2-0x0000000003170000-0x000000000328B000-memory.dmp

        memory/692-20-0x0000000002DE0000-0x0000000002E7F000-memory.dmp

        memory/1856-161-0x0000000000A50000-0x0000000000B50000-memory.dmp

        memory/1896-84-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/1896-79-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/1896-86-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/3028-52-0x0000000000400000-0x000000000063F000-memory.dmp

        memory/3028-51-0x0000000000400000-0x000000000063F000-memory.dmp

        memory/3028-75-0x0000000000400000-0x000000000063F000-memory.dmp

        memory/3028-46-0x0000000000400000-0x000000000063F000-memory.dmp

        memory/3068-139-0x00000000009E0000-0x0000000000AE0000-memory.dmp

        memory/3624-22-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-29-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-24-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-59-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-72-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-23-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-34-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-36-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-37-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/3624-30-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4112-6-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4112-17-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4112-5-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4112-3-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4112-4-0x0000000000400000-0x0000000000537000-memory.dmp

        memory/4384-83-0x00000000001F0000-0x00000000001F4000-memory.dmp

        memory/4384-82-0x0000000000989000-0x000000000099A000-memory.dmp

        memory/4676-114-0x0000000000869000-0x0000000000879000-memory.dmp

        memory/4844-49-0x00000000004B0000-0x00000000005B0000-memory.dmp

        memory/4844-50-0x00000000007D0000-0x00000000007FC000-memory.dmp

        memory/5052-188-0x0000000000A90000-0x0000000000B90000-memory.dmp