Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 22:13

General

  • Target

    da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb.exe

  • Size

    1.2MB

  • MD5

    f316c250f78bc5c1ac83ec3993c9edec

  • SHA1

    9807d7dd5f9446b6b9990d0bf3b57c669de8e172

  • SHA256

    da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb

  • SHA512

    0ceff2a91e474257f1ca40d223cdcce9181f417d16c79c52e252ff488761377a2ac451fc9d11dc084706b68a19c71565e867754fcf305ddf96b34eec05a9d6fd

  • SSDEEP

    24576:VnghTrx6br3u40UMffEOU4PPaUVVrXpqTiwAAgEEY4:Vghnx6br3u40jEOUcPRVPqTQp

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

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\da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb.exe
    "C:\Users\Admin\AppData\Local\Temp\da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Users\Admin\AppData\Local\Temp\da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb.exe
      "C:\Users\Admin\AppData\Local\Temp\da7f7bddce0402e2c6e547009034a7745842bdeeedfc9fc36a2761270ea350cb.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:980
      • 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:1432

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/980-138-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/980-140-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/980-143-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1432-145-0x0000000000580000-0x00000000005E6000-memory.dmp

    Filesize

    408KB

  • memory/2140-132-0x0000000000C20000-0x0000000000D58000-memory.dmp

    Filesize

    1.2MB

  • memory/2140-133-0x0000000005D30000-0x00000000062D4000-memory.dmp

    Filesize

    5.6MB

  • memory/2140-134-0x0000000005780000-0x0000000005812000-memory.dmp

    Filesize

    584KB

  • memory/2140-135-0x0000000005710000-0x000000000571A000-memory.dmp

    Filesize

    40KB

  • memory/2140-136-0x00000000095B0000-0x000000000964C000-memory.dmp

    Filesize

    624KB