Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/07/2026, 08:18

General

  • Target
    d1179225fea10cd4d027378fcc5c04ef0c24a86c876513ec5f3b2ed962bf5f7d.exe
  • Size 45KB
  • Sample260720-j7ncvabs6j
  • SHA256 d1179225fea10cd4d027378fcc5c04ef0c24a86c876513ec5f3b2ed962bf5f7d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • sex18.pw:80

  • sex18.pw:22

  • sex18.pw:8080

  • sex18.pw:8880

  • sex18.pw:2052

  • sex18.pw:2082

  • sex18.pw:2086

  • sex18.pw:2095

  • sex18.pw:443

  • sex18.pw:2053

  • sex18.pw:2083

  • sex18.pw:2087

  • sex18.pw:2096

  • sex18.pw:8443

  • www.sex18.pw:80

  • www.sex18.pw:22

  • www.sex18.pw:8080

  • www.sex18.pw:8880

  • www.sex18.pw:2052

  • www.sex18.pw:2082

Mutex
  • lnb5HmDWTCpg

Attributes
  • delay

    0

  • install

    true

  • install_file

    f1013un.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
  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d1179225fea10cd4d027378fcc5c04ef0c24a86c876513ec5f3b2ed962bf5f7d.exe
    "C:\Users\Admin\AppData\Local\Temp\d1179225fea10cd4d027378fcc5c04ef0c24a86c876513ec5f3b2ed962bf5f7d.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "f1013un" /tr '"C:\Users\Admin\AppData\Roaming\f1013un.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1592
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "f1013un" /tr '"C:\Users\Admin\AppData\Roaming\f1013un.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2136
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp66CE.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5232
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1940
      • C:\Users\Admin\AppData\Roaming\f1013un.exe
        "C:\Users\Admin\AppData\Roaming\f1013un.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3448
  • C:\Users\Admin\AppData\Roaming\f1013un.exe
    "C:\Users\Admin\AppData\Roaming\f1013un.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2916

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp66CE.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp66CE.tmp.bat
        • Size 151B
        • SHA256 75949e909ce1a426e973105bb8e20a202647b512fe6a252e8be6ebf0bc9a42e2
        • MD5 SHA1 SHA512 TLSH

        f1013un.exe

        • Path C:\Users\Admin\AppData\Roaming\f1013un.exe
        • Size 45KB
        • SHA256 d1179225fea10cd4d027378fcc5c04ef0c24a86c876513ec5f3b2ed962bf5f7d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2916-12-0x00000000748E0000-0x000000007509C000-memory.dmp

        memory/2916-14-0x00000000748E0000-0x000000007509C000-memory.dmp

        memory/4816-0-0x0000000074A62000-0x0000000074A63000-memory.dmp

        memory/4816-1-0x0000000000FE0000-0x0000000000FF2000-memory.dmp

        memory/4816-2-0x0000000074A50000-0x000000007520C000-memory.dmp

        memory/4816-3-0x00000000059A0000-0x0000000005A3C000-memory.dmp

        memory/4816-8-0x0000000074A50000-0x000000007520C000-memory.dmp