Analysis

  • max time kernel
    147s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-10-2022 13:18

General

  • Target

    Purchase Order.exe

  • Size

    1012KB

  • MD5

    7488038af7f8186a5f38f337b2a97a27

  • SHA1

    1ed765da594deb249734c196d2d5ddb45eb888cb

  • SHA256

    72b53805a4f865668bae4e6623be68b8c47e672910f5ebbbe42cbd6605ad35e1

  • SHA512

    fd361d4355c6e419ccfa3ec882612495e21e6f61aa77666132f9749827940e5c7cc5949afc8b2f32ca30b81d8863056d2e8743bf6fc37e760fba6c0e447f9c43

  • SSDEEP

    24576:C1oN67sWLUxMdLLBGpriRrl4Jiz69s2i/hd4pWgOj1zZnO:CkFxMdPqGRaJK/kpWgE

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • 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\Purchase Order.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3148
      • 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:5004

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2820-132-0x0000000000270000-0x0000000000374000-memory.dmp

    Filesize

    1.0MB

  • memory/2820-133-0x0000000005290000-0x0000000005834000-memory.dmp

    Filesize

    5.6MB

  • memory/2820-134-0x0000000004D80000-0x0000000004E12000-memory.dmp

    Filesize

    584KB

  • memory/2820-135-0x0000000004D30000-0x0000000004D3A000-memory.dmp

    Filesize

    40KB

  • memory/2820-136-0x0000000000D20000-0x0000000000DBC000-memory.dmp

    Filesize

    624KB

  • memory/3148-138-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3148-140-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/3148-143-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/5004-145-0x0000000000190000-0x00000000001F6000-memory.dmp

    Filesize

    408KB