Analysis

  • max time kernel
    121s
  • max time network
    163s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    29/10/2021, 03:17

General

  • Target
    PO_Contract_ANR07152112_20210715181907__110.exe
  • Size 356KB
  • Sample211029-ds2c9shcal
  • SHA256 c18747e7433fe0aa7dc25dbac1b2788d5c0412ea5bbead7f395dbfe43a727470
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • 185.222.57.71:00783

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • anti_vm

    false

  • bsod

    false

  • delay

    20

  • install

    false

  • install_folder

    %AppData%

  • pastebin_config

    null

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

    suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO_Contract_ANR07152112_20210715181907__110.exe
    "C:\Users\Admin\AppData\Local\Temp\PO_Contract_ANR07152112_20210715181907__110.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3748
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2620

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/2620-124-0x0000000000400000-0x0000000000412000-memory.dmp

        memory/2620-128-0x00000000057A0000-0x00000000057A1000-memory.dmp

        memory/2620-131-0x0000000005FD0000-0x0000000005FD1000-memory.dmp

        memory/3748-115-0x0000000000770000-0x0000000000771000-memory.dmp

        memory/3748-117-0x00000000054E0000-0x00000000054E1000-memory.dmp

        memory/3748-118-0x0000000005080000-0x0000000005081000-memory.dmp

        memory/3748-119-0x0000000005010000-0x0000000005011000-memory.dmp

        memory/3748-120-0x0000000006F10000-0x0000000006F16000-memory.dmp

        memory/3748-121-0x0000000004FE0000-0x00000000054DE000-memory.dmp

        memory/3748-122-0x0000000007760000-0x0000000007761000-memory.dmp

        memory/3748-123-0x00000000071E0000-0x000000000720E000-memory.dmp