Overview

overview

10

Static

static

10

plaslclasc.exe

windows10-2004-x64

10

plaslclasc.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    26/06/2026, 10:46

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General

  • Target
    plaslclasc.exe
  • Size 45KB
  • Sample260626-mvb1tsbv2p
  • SHA256 bfa3769d868815f427810a314efb62f4b2ee3fa674b967d3222befaae7b3ab11
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
admindefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Admin

C2

  • sexkola.com:80

  • sexkola.com:443

  • www.sexkola.com:80

  • www.sexkola.com:443

Mutex

  • 7jlUqsdtpD4d

Attributes
  • delay

    3

  • install

    true

  • install_file

    plaslclasc.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: 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 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\plaslclasc.exe
    "C:\Users\Admin\AppData\Local\Temp\plaslclasc.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "plaslclasc" /tr '"C:\Users\Admin\AppData\Roaming\plaslclasc.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3332
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "plaslclasc" /tr '"C:\Users\Admin\AppData\Roaming\plaslclasc.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3344
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7952.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4260
      • C:\Users\Admin\AppData\Roaming\plaslclasc.exe
        "C:\Users\Admin\AppData\Roaming\plaslclasc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1580
  • C:\Users\Admin\AppData\Roaming\plaslclasc.exe
    "C:\Users\Admin\AppData\Roaming\plaslclasc.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2460

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        plaslclasc.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\plaslclasc.exe.log
        • Size 522B
        • SHA256 2412679218bb0a7d05ceee32869bbb223619bde9966c4c460a68304a3367724b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tmp7952.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp7952.tmp.bat
        • Size 154B
        • SHA256 96df545735e1008f629dcb8186cb014a3b511ec07173c84d7af8e1aa0405ebdc
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        plaslclasc.exe
        • Path C:\Users\Admin\AppData\Roaming\plaslclasc.exe
        • Size 45KB
        • SHA256 bfa3769d868815f427810a314efb62f4b2ee3fa674b967d3222befaae7b3ab11
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1760-0-0x00000000008E0000-0x00000000008F2000-memory.dmp
        Download

        memory/1760-1-0x0000000005240000-0x0000000005250000-memory.dmp
        Download

        memory/1760-2-0x00000000052F0000-0x000000000538C000-memory.dmp
        Download