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Analysis

  • max time kernel
    147s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/08/2022, 20:44

General

  • Target

    579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe

  • Size

    1.1MB

  • MD5

    2d475dbdfd7a378689d984a04677e641

  • SHA1

    1a673fb62bb6e29fb3d9ef0d40e480cbad541879

  • SHA256

    579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498

  • SHA512

    cf9e9014fc5b462ef5d2326c452d922b3c3b3f1317eed74b4620345fe8eeef15779abdf239d87a8c5dcb2e124c3d4214a0be8a06d43be3108e348091a7706fc5

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5330579892:AAHDIOXrD-d-pMU_JI4pPczBI962-9fokRs/sendMessage?chat_id=1494890429

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
    "C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3076
    • C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe
      "C:\Users\Admin\AppData\Local\Temp\579c3138028884421849a6d210996f27da317f22d228a98d9bd0704786090498.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3588
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        3⤵
        • Accesses Microsoft Outlook profiles
        • outlook_office_path
        • outlook_win_path
        PID:3496

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3076-131-0x0000000005E70000-0x0000000006414000-memory.dmp

    Filesize

    5.6MB

  • memory/3076-132-0x00000000059C0000-0x0000000005A52000-memory.dmp

    Filesize

    584KB

  • memory/3076-133-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

    Filesize

    40KB

  • memory/3076-134-0x000000000A480000-0x000000000A51C000-memory.dmp

    Filesize

    624KB

  • memory/3076-135-0x000000000A3E0000-0x000000000A446000-memory.dmp

    Filesize

    408KB

  • memory/3076-130-0x0000000000AC0000-0x0000000000BD8000-memory.dmp

    Filesize

    1.1MB

  • memory/3496-144-0x0000000000960000-0x00000000009C6000-memory.dmp

    Filesize

    408KB

  • memory/3588-142-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/3588-139-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/3588-137-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/3588-145-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB