Analysis

  • max time kernel
    77s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    14/10/2020, 15:22

General

  • Target
    ORDER-20200912.doc............exe
  • Size 379KB
  • Sample201014-gz51naneqx
  • SHA256 f2397e6357ab4351a130ce51fe8236c663b446bc8f414618890e45263460e6c7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

C2
  • chongmei33.publicvm.com,185.165.153.116,54.37.36.116,185.244.30.92,dongreg202020.duckdns.org,178.33.222.241,rahim321.duckdns.org,79.134.225.92,37.120.208.36:49746,2703,49714

Mutex
  • word_6SI86kPnk

Attributes
  • aes_key

    cXaUSI4AZFOKx5k2667BdkKb6EfeIGtv

  • anti_detection

    false

  • autorun

    false

  • bdos

    false

  • delay

    SEPT G88

  • host

    chongmei33.publicvm.com,185.165.153.116,54.37.36.116,185.244.30.92,dongreg202020.duckdns.org,178.33.222.241,rahim321.duckdns.org,79.134.225.92,37.120.208.36

  • hwid

    3

  • install_file

  • install_folder

    %AppData%

  • mutex

    word_6SI86kPnk

  • pastebin_config

    null

  • port

    49746,2703,49714

  • version

    0.5.7B

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Async RAT payload 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ORDER-20200912.doc............exe
    "C:\Users\Admin\AppData\Local\Temp\ORDER-20200912.doc............exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:848

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/848-5-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/848-7-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/848-8-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/848-9-0x0000000074650000-0x0000000074D3E000-memory.dmp

        memory/1620-0-0x0000000074650000-0x0000000074D3E000-memory.dmp

        memory/1620-1-0x0000000000A70000-0x0000000000A71000-memory.dmp

        memory/1620-3-0x00000000009D0000-0x00000000009E3000-memory.dmp