Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    01/07/2026, 10:38

General

  • Target
    934881f5b5df5d4c03ccbb727c72e09ebe691b0c16bd7124d5df638698e60471.exe
  • Size 45KB
  • Sample260701-mpxeksd16x
  • SHA256 934881f5b5df5d4c03ccbb727c72e09ebe691b0c16bd7124d5df638698e60471
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • xxxtop.net:80

  • xxxtop.net:22

  • xxxtop.net:8080

  • xxxtop.net:8880

  • xxxtop.net:2052

  • xxxtop.net:2082

  • xxxtop.net:2086

  • xxxtop.net:2095

  • xxxtop.net:443

  • xxxtop.net:2053

  • xxxtop.net:2083

  • xxxtop.net:2087

  • xxxtop.net:2096

  • xxxtop.net:8443

  • www.xxxtop.net:80

  • www.xxxtop.net:22

  • www.xxxtop.net:8080

  • www.xxxtop.net:8880

  • www.xxxtop.net:2052

  • www.xxxtop.net:2082

Mutex
  • w8sgxKJEtDzY

Attributes
  • delay

    0

  • install

    true

  • install_file

    cjkge.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

  • Async RAT payload 2 IoCs
  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 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 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\934881f5b5df5d4c03ccbb727c72e09ebe691b0c16bd7124d5df638698e60471.exe
    "C:\Users\Admin\AppData\Local\Temp\934881f5b5df5d4c03ccbb727c72e09ebe691b0c16bd7124d5df638698e60471.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2592
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cjkge" /tr '"C:\Users\Admin\AppData\Roaming\cjkge.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2688
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "cjkge" /tr '"C:\Users\Admin\AppData\Roaming\cjkge.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2376
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1AD6.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4548
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2944
      • C:\Users\Admin\AppData\Roaming\cjkge.exe
        "C:\Users\Admin\AppData\Roaming\cjkge.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3508
  • C:\Users\Admin\AppData\Roaming\cjkge.exe
    "C:\Users\Admin\AppData\Roaming\cjkge.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1668

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp1AD6.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1AD6.tmp.bat
        • Size 149B
        • SHA256 aecd12070c6e86ef7d706789afffc33846be71a5693151b3ec46d0c62126d44b
        • MD5 SHA1 SHA512 TLSH

        cjkge.exe

        • Path C:\Users\Admin\AppData\Roaming\cjkge.exe
        • Size 45KB
        • SHA256 934881f5b5df5d4c03ccbb727c72e09ebe691b0c16bd7124d5df638698e60471
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1668-10-0x0000000004E60000-0x0000000004E70000-memory.dmp

        memory/1668-13-0x0000000004E60000-0x0000000004E70000-memory.dmp

        memory/2592-0-0x00000000005C0000-0x00000000005D2000-memory.dmp

        memory/2592-1-0x0000000005080000-0x0000000005090000-memory.dmp

        memory/2592-2-0x0000000004F70000-0x000000000500C000-memory.dmp