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Analysis

  • max time kernel
    150s
  • max time network
    147s
  • 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, 16:24

General

  • Target

    P.O12537.exe

  • Size

    1022KB

  • MD5

    75dcd5e85ae9f8bcf9d95335efd83867

  • SHA1

    8501172142aaa040e8effc06cf51a4beffd40683

  • SHA256

    16f18d5c839c1c24cdceb8bbc9f3adb8300cd16d585678597d0f30beecbce942

  • SHA512

    8a9958bdbb1cd42ad811146e024862ab42927285041400997e1aa59e77f91f4fbb0080a2992aa94ad4284f7e67d1fc8bcde91bc3caaf71ae1ee0a90c1169f448

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.

  • 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\P.O12537.exe
    "C:\Users\Admin\AppData\Local\Temp\P.O12537.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Users\Admin\AppData\Local\Temp\P.O12537.exe
      "C:\Users\Admin\AppData\Local\Temp\P.O12537.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5028
      • 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:1572

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/792-131-0x0000000005F70000-0x0000000006514000-memory.dmp

    Filesize

    5.6MB

  • memory/792-132-0x0000000005A60000-0x0000000005AF2000-memory.dmp

    Filesize

    584KB

  • memory/792-133-0x0000000005EC0000-0x0000000005ECA000-memory.dmp

    Filesize

    40KB

  • memory/792-134-0x000000000A6B0000-0x000000000A74C000-memory.dmp

    Filesize

    624KB

  • memory/792-135-0x000000000A7A0000-0x000000000A806000-memory.dmp

    Filesize

    408KB

  • memory/792-130-0x0000000000DD0000-0x0000000000ED6000-memory.dmp

    Filesize

    1.0MB

  • memory/1572-144-0x00000000007C0000-0x0000000000826000-memory.dmp

    Filesize

    408KB

  • memory/5028-142-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/5028-139-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/5028-137-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB

  • memory/5028-145-0x0000000000400000-0x000000000046D000-memory.dmp

    Filesize

    436KB