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
    10/07/2026, 11:07

General

  • Target
    47915bd639c1be91e050d0bc0cc0b6da51719458119da2991f540df472a034b7.exe
  • Size 45KB
  • Sample260710-m755faa18x
  • SHA256 47915bd639c1be91e050d0bc0cc0b6da51719458119da2991f540df472a034b7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • sexviet74.com:80

  • sexviet74.com:22

  • sexviet74.com:8080

  • sexviet74.com:8880

  • sexviet74.com:2052

  • sexviet74.com:2082

  • sexviet74.com:2086

  • sexviet74.com:2095

  • sexviet74.com:443

  • sexviet74.com:2053

  • sexviet74.com:2083

  • sexviet74.com:2087

  • sexviet74.com:2096

  • sexviet74.com:8443

  • www.sexviet74.com:80

  • www.sexviet74.com:22

  • www.sexviet74.com:8080

  • www.sexviet74.com:8880

  • www.sexviet74.com:2052

  • www.sexviet74.com:2082

Mutex
  • rvgzzPED39kS

Attributes
  • delay

    0

  • install

    true

  • install_file

    z1zcwnm.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 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\47915bd639c1be91e050d0bc0cc0b6da51719458119da2991f540df472a034b7.exe
    "C:\Users\Admin\AppData\Local\Temp\47915bd639c1be91e050d0bc0cc0b6da51719458119da2991f540df472a034b7.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4600
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "z1zcwnm" /tr '"C:\Users\Admin\AppData\Roaming\z1zcwnm.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:436
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "z1zcwnm" /tr '"C:\Users\Admin\AppData\Roaming\z1zcwnm.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1684
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAE8B.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4876
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4884
      • C:\Users\Admin\AppData\Roaming\z1zcwnm.exe
        "C:\Users\Admin\AppData\Roaming\z1zcwnm.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2672
  • C:\Users\Admin\AppData\Roaming\z1zcwnm.exe
    "C:\Users\Admin\AppData\Roaming\z1zcwnm.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3176

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpAE8B.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpAE8B.tmp.bat
        • Size 151B
        • SHA256 97a0c49daeaca6d957635bd8643d59bf8ff8f7e079d6692a75995314cdaf2557
        • MD5 SHA1 SHA512 TLSH

        z1zcwnm.exe

        • Path C:\Users\Admin\AppData\Roaming\z1zcwnm.exe
        • Size 45KB
        • SHA256 47915bd639c1be91e050d0bc0cc0b6da51719458119da2991f540df472a034b7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3176-10-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/3176-13-0x0000000005190000-0x00000000051A0000-memory.dmp

        memory/4600-0-0x0000000000B40000-0x0000000000B52000-memory.dmp

        memory/4600-1-0x00000000054E0000-0x00000000054F0000-memory.dmp

        memory/4600-2-0x0000000005590000-0x000000000562C000-memory.dmp