Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 10:38

General

  • Target
    ebf7ea1766aaf859e5e8cf8d7102a304c91c5d094b12458ca5350acacb4fe872.exe
  • Size 45KB
  • Sample260804-mpqa9shf83
  • SHA256 ebf7ea1766aaf859e5e8cf8d7102a304c91c5d094b12458ca5350acacb4fe872
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • xemsexmy.org:80

  • xemsexmy.org:22

  • xemsexmy.org:8080

  • xemsexmy.org:8880

  • xemsexmy.org:2052

  • xemsexmy.org:2082

  • xemsexmy.org:2086

  • xemsexmy.org:2095

  • xemsexmy.org:443

  • xemsexmy.org:2053

  • xemsexmy.org:2083

  • xemsexmy.org:2087

  • xemsexmy.org:2096

  • xemsexmy.org:8443

  • www.xemsexmy.org:80

  • www.xemsexmy.org:22

  • www.xemsexmy.org:8080

  • www.xemsexmy.org:8880

  • www.xemsexmy.org:2052

  • www.xemsexmy.org:2082

Mutex
  • DWrMcRPVTxCO

Attributes
  • delay

    0

  • install

    true

  • install_file

    fkc1q.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 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Outbound SSH connection to public host 2 TTPs 2 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ebf7ea1766aaf859e5e8cf8d7102a304c91c5d094b12458ca5350acacb4fe872.exe
    "C:\Users\Admin\AppData\Local\Temp\ebf7ea1766aaf859e5e8cf8d7102a304c91c5d094b12458ca5350acacb4fe872.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5856
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fkc1q" /tr '"C:\Users\Admin\AppData\Roaming\fkc1q.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4316
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "fkc1q" /tr '"C:\Users\Admin\AppData\Roaming\fkc1q.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2484
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5D59.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3268
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2736
      • C:\Users\Admin\AppData\Roaming\fkc1q.exe
        "C:\Users\Admin\AppData\Roaming\fkc1q.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:248
  • C:\Users\Admin\AppData\Roaming\fkc1q.exe
    "C:\Users\Admin\AppData\Roaming\fkc1q.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:3256

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp5D59.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp5D59.tmp.bat
        • Size 149B
        • SHA256 4e6cd99a5a807a99c85d1f129ed9f85a37f5786cdb43d9bbb76f537efb8ccfa0
        • MD5 SHA1 SHA512 TLSH

        fkc1q.exe

        • Path C:\Users\Admin\AppData\Roaming\fkc1q.exe
        • Size 45KB
        • SHA256 ebf7ea1766aaf859e5e8cf8d7102a304c91c5d094b12458ca5350acacb4fe872
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3256-12-0x0000000074F20000-0x00000000756DC000-memory.dmp

        memory/3256-14-0x0000000074F20000-0x00000000756DC000-memory.dmp

        memory/5856-0-0x0000000075132000-0x0000000075133000-memory.dmp

        memory/5856-1-0x00000000008F0000-0x0000000000902000-memory.dmp

        memory/5856-2-0x0000000075120000-0x00000000758DC000-memory.dmp

        memory/5856-3-0x0000000005430000-0x00000000054CC000-memory.dmp

        memory/5856-8-0x0000000075120000-0x00000000758DC000-memory.dmp