Overview

overview

10

Static

static

10

4476d0eb2a...67.exe

windows7-x64

10

4476d0eb2a...67.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    137s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/08/2024, 01:34

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
  • Size 63KB
  • Sample240802-by8y7asemh
  • SHA256 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 1.2

Botnet

  • Default

C2

  • stores-less.gl.at.ply.gg:45080

Mutex

  • AtomRatMutex_penka

Attributes
  • delay

    1

  • install

    true

  • install_file

    piskat.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
    "C:\Users\Admin\AppData\Local\Temp\4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "piskat" /tr '"C:\Users\Admin\AppData\Roaming\piskat.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1344
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "piskat" /tr '"C:\Users\Admin\AppData\Roaming\piskat.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3440
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9819.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1232
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1484
      • C:\Users\Admin\AppData\Roaming\piskat.exe
        "C:\Users\Admin\AppData\Roaming\piskat.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1964

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp9819.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp9819.tmp.bat
        • Size 150B
        • SHA256 17ca7664d618179f1200fdfb0260b63c7f6b5f96d89b200ed02a02118cac3226
        • MD5 SHA1 SHA512
        Submit Download

        piskat.exe
        • Path C:\Users\Admin\AppData\Roaming\piskat.exe
        • Size 63KB
        • SHA256 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/2224-0-0x00007FFB338F3000-0x00007FFB338F5000-memory.dmp
        Download

        memory/2224-1-0x000001D069780000-0x000001D069796000-memory.dmp
        Download

        memory/2224-2-0x00007FFB338F0000-0x00007FFB343B1000-memory.dmp
        Download

        memory/2224-7-0x00007FFB338F0000-0x00007FFB343B1000-memory.dmp
        Download

        memory/2224-12-0x00007FFB338F0000-0x00007FFB343B1000-memory.dmp
        Download