Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09/11/2020, 20:51

General

  • Target
    c8bc98c031af422824eb12cd8dcf61b8e1844aea010134692c1f3d4b8bedae69.exe
  • Size 98KB
  • Sample201109-2wtq3j28mx
  • SHA256 c8bc98c031af422824eb12cd8dcf61b8e1844aea010134692c1f3d4b8bedae69
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • njrat

Version
  • 0.7d

Botnet
  • neuf

C2
  • doddyfire.linkpc.net:10000

Mutex
  • e1a87040f2026369a233f9ae76301b7b

Attributes
  • reg_key

    e1a87040f2026369a233f9ae76301b7b

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 3 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 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 AdjustPrivilegeToken 29 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8bc98c031af422824eb12cd8dcf61b8e1844aea010134692c1f3d4b8bedae69.exe
    "C:\Users\Admin\AppData\Local\Temp\c8bc98c031af422824eb12cd8dcf61b8e1844aea010134692c1f3d4b8bedae69.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1704
    • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
      "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1268
      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        3⤵
        • Executes dropped EXE
        PID:1628
      • C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:324
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
          4⤵
            PID:524

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/324-5-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/324-8-0x0000000000400000-0x000000000040C000-memory.dmp

          memory/324-11-0x0000000000400000-0x000000000040C000-memory.dmp