Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/08/2023, 01:47

General

  • Target
    d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe
  • Size 48KB
  • Sample230822-b71deaba8s
  • SHA256 d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Family
  • asyncrat

Version
  • 1.0.7

Botnet
  • Default

C2
  • 127.0.0.1:8848

  • 127.0.0.1:8858

  • thwit.ddns.net:8848

  • thwit.ddns.net:8858

Mutex
  • DcRatMutex_qwqdnachun

Attributes
  • delay

    1

  • install

    true

  • install_file

    ..\..\..\..\tmp\StartService.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Async RAT payload 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe
    "C:\Users\Admin\AppData\Local\Temp\d36ca7e0e68cdb365995c488172b049fedf69f459a71c9a8f45b7aa75038f9fc.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1384
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "StartService" /tr '"C:\tmp\StartService.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4760
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "StartService" /tr '"C:\tmp\StartService.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:3968

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1384-133-0x00000000002F0000-0x0000000000302000-memory.dmp

        memory/1384-134-0x00007FFEE86A0000-0x00007FFEE9161000-memory.dmp

        memory/1384-135-0x000000001B000000-0x000000001B010000-memory.dmp

        memory/1384-136-0x00007FFEE86A0000-0x00007FFEE9161000-memory.dmp

        memory/1384-137-0x000000001B000000-0x000000001B010000-memory.dmp