Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/07/2026, 14:30

General

  • Target
    f0abf55ec56cb3bfefb76c1c6fdbf6afaa581ec481e68774c581a434be0637d9.exe
  • Size 45KB
  • Sample260714-rt9b6aew7m
  • SHA256 f0abf55ec56cb3bfefb76c1c6fdbf6afaa581ec481e68774c581a434be0637d9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • sexphimhayw.pro:80

  • sexphimhayw.pro:22

  • sexphimhayw.pro:8080

  • sexphimhayw.pro:8880

  • sexphimhayw.pro:2052

  • sexphimhayw.pro:2082

  • sexphimhayw.pro:2086

  • sexphimhayw.pro:2095

  • sexphimhayw.pro:443

  • sexphimhayw.pro:2053

  • sexphimhayw.pro:2083

  • sexphimhayw.pro:2087

  • sexphimhayw.pro:2096

  • sexphimhayw.pro:8443

  • www.sexphimhayw.pro:80

  • www.sexphimhayw.pro:22

  • www.sexphimhayw.pro:8080

  • www.sexphimhayw.pro:8880

  • www.sexphimhayw.pro:2052

  • www.sexphimhayw.pro:2082

Mutex
  • Wgf1SATfaE3Z

Attributes
  • delay

    0

  • install

    true

  • install_file

    fhk4.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).

  • 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 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f0abf55ec56cb3bfefb76c1c6fdbf6afaa581ec481e68774c581a434be0637d9.exe
    "C:\Users\Admin\AppData\Local\Temp\f0abf55ec56cb3bfefb76c1c6fdbf6afaa581ec481e68774c581a434be0637d9.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4168
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fhk4" /tr '"C:\Users\Admin\AppData\Roaming\fhk4.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "fhk4" /tr '"C:\Users\Admin\AppData\Roaming\fhk4.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4864
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC2B.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3148
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4380
      • C:\Users\Admin\AppData\Roaming\fhk4.exe
        "C:\Users\Admin\AppData\Roaming\fhk4.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1464
  • C:\Users\Admin\AppData\Roaming\fhk4.exe
    "C:\Users\Admin\AppData\Roaming\fhk4.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2132

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpC2B.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpC2B.tmp.bat
        • Size 147B
        • SHA256 86d39696fe246eb80f57392a48f83e0fce3cf02998f86d46ca9b321e87069833
        • MD5 SHA1 SHA512 TLSH

        fhk4.exe

        • Path C:\Users\Admin\AppData\Roaming\fhk4.exe
        • Size 45KB
        • SHA256 f0abf55ec56cb3bfefb76c1c6fdbf6afaa581ec481e68774c581a434be0637d9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2132-12-0x0000000074330000-0x0000000074AEC000-memory.dmp

        memory/2132-14-0x0000000074330000-0x0000000074AEC000-memory.dmp

        memory/4168-0-0x0000000074342000-0x0000000074343000-memory.dmp

        memory/4168-1-0x0000000000FA0000-0x0000000000FB2000-memory.dmp

        memory/4168-2-0x0000000074330000-0x0000000074AEC000-memory.dmp

        memory/4168-3-0x0000000005AA0000-0x0000000005B3C000-memory.dmp

        memory/4168-9-0x0000000074330000-0x0000000074AEC000-memory.dmp