Analysis

  • max time kernel
    64s
  • max time network
    161s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    19/10/2021, 09:45

General

  • Target
    Server1.ps1
  • Size 963KB
  • Sample211019-lq4plsgdfj
  • SHA256 a341b8f10a51457c11292173cfa48fe49256c9ccef8ec045753b49b2bfa935d6
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 1.0.7

Botnet
  • Default

C2
  • 139.28.37.182:5200

Mutex
  • DcRatMutex_qwqdanchun

Attributes
  • anti_vm

    false

  • bsod

    false

  • delay

    1

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    null

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Server1.ps1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:420

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/420-138-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/420-147-0x0000000005E60000-0x0000000005E61000-memory.dmp

        memory/420-145-0x0000000005D50000-0x0000000005D51000-memory.dmp

        memory/420-146-0x00000000062F0000-0x00000000062F1000-memory.dmp

        memory/420-144-0x00000000054F0000-0x00000000054F1000-memory.dmp

        memory/420-142-0x0000000000DE0000-0x0000000000DF2000-memory.dmp

        memory/1828-120-0x0000021125520000-0x0000021125521000-memory.dmp

        memory/1828-134-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-125-0x000002113DAC3000-0x000002113DAC5000-memory.dmp

        memory/1828-123-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-126-0x000002113FBA0000-0x000002113FBA1000-memory.dmp

        memory/1828-127-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-131-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-132-0x000002113DAC6000-0x000002113DAC8000-memory.dmp

        memory/1828-133-0x0000021125560000-0x0000021125584000-memory.dmp

        memory/1828-124-0x000002113DAC0000-0x000002113DAC2000-memory.dmp

        memory/1828-122-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-115-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-141-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-140-0x0000021125590000-0x0000021125591000-memory.dmp

        memory/1828-121-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-119-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-118-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-117-0x0000021123A60000-0x0000021123A62000-memory.dmp

        memory/1828-116-0x0000021123A60000-0x0000021123A62000-memory.dmp