Overview

overview

10

Static

static

10

windll32.exe

windows7-x64

10

windll32.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/12/2022, 05:41

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    windll32.exe
  • Size 57KB
  • Sample221207-gdfd2acf81
  • SHA256 51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
asyncratrat

Malware Config

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

    ratasyncrat
  • Async RAT payload 3 IoCs
    rat
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\windll32.exe
    "C:\Users\Admin\AppData\Local\Temp\windll32.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2416
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "path" /tr '"C:\Users\Admin\AppData\Roaming\path.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4296
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "path" /tr '"C:\Users\Admin\AppData\Roaming\path.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:3656
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp232.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1088
      • C:\Users\Admin\AppData\Roaming\path.exe
        "C:\Users\Admin\AppData\Roaming\path.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4276

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp232.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp232.tmp.bat
        • Size 147B
        • SHA256 69c34f34ad36528ca7fa68499ae0e8bfeaebdc11c4052c5f3d25848640994c81
        • MD5 SHA1 SHA512
        Submit Download

        path.exe
        • Path C:\Users\Admin\AppData\Roaming\path.exe
        • Size 57KB
        • SHA256 51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        path.exe
        • Path C:\Users\Admin\AppData\Roaming\path.exe
        • Size 57KB
        • SHA256 51db4d2c54e299ae26b3085633aa79476560f9a2f5cc4328683cdee5fb6591fe
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/2416-132-0x00000000000B0000-0x00000000000C2000-memory.dmp
        Download

        memory/2416-133-0x0000000004E60000-0x0000000004EFC000-memory.dmp
        Download