Overview

overview

10

Static

static

10

a5ae7db6d4...38.exe

windows10-2004-x64

10

a5ae7db6d4...38.exe

windows11-ltsc_2024-x64

10

Analysis

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

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    06/07/2026, 04:30

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General

  • Target
    a5ae7db6d447799528d28f46a64dbd77bdfb0f5d84cca20ff5707b8ba5076e38.exe
  • Size 45KB
  • Sample260706-e4x1nahy2s
  • SHA256 a5ae7db6d447799528d28f46a64dbd77bdfb0f5d84cca20ff5707b8ba5076e38
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • transferstropicalsunbay.com:80

  • transferstropicalsunbay.com:22

  • transferstropicalsunbay.com:8080

  • transferstropicalsunbay.com:8880

  • transferstropicalsunbay.com:2052

  • transferstropicalsunbay.com:2082

  • transferstropicalsunbay.com:2086

  • transferstropicalsunbay.com:2095

  • transferstropicalsunbay.com:443

  • transferstropicalsunbay.com:2053

  • transferstropicalsunbay.com:2083

  • transferstropicalsunbay.com:2087

  • transferstropicalsunbay.com:2096

  • transferstropicalsunbay.com:8443

  • www.transferstropicalsunbay.com:80

  • www.transferstropicalsunbay.com:22

  • www.transferstropicalsunbay.com:8080

  • www.transferstropicalsunbay.com:8880

  • www.transferstropicalsunbay.com:2052

  • www.transferstropicalsunbay.com:2082

Mutex

  • Mk4YZEopeie0

Attributes
  • delay

    0

  • install

    true

  • install_file

    ncm04u.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

    ratasyncrat
  • Async RAT payload 3 IoCs
    rat
  • 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.

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a5ae7db6d447799528d28f46a64dbd77bdfb0f5d84cca20ff5707b8ba5076e38.exe
    "C:\Users\Admin\AppData\Local\Temp\a5ae7db6d447799528d28f46a64dbd77bdfb0f5d84cca20ff5707b8ba5076e38.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ncm04u" /tr '"C:\Users\Admin\AppData\Roaming\ncm04u.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3336
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "ncm04u" /tr '"C:\Users\Admin\AppData\Roaming\ncm04u.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4820
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp644.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3468
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3500
      • C:\Users\Admin\AppData\Roaming\ncm04u.exe
        "C:\Users\Admin\AppData\Roaming\ncm04u.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4424
  • C:\Users\Admin\AppData\Roaming\ncm04u.exe
    "C:\Users\Admin\AppData\Roaming\ncm04u.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1248

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp644.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp644.tmp.bat
        • Size 149B
        • SHA256 0ac66ed2a3004c0dfba45131cee1e36fed326df0a8dcaa7855cf03e619dd70b8
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        ncm04u.exe
        • Path C:\Users\Admin\AppData\Roaming\ncm04u.exe
        • Size 45KB
        • SHA256 a5ae7db6d447799528d28f46a64dbd77bdfb0f5d84cca20ff5707b8ba5076e38
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1248-10-0x0000000005930000-0x0000000005940000-memory.dmp
        Download

        memory/1248-13-0x0000000005930000-0x0000000005940000-memory.dmp
        Download

        memory/2636-0-0x0000000000410000-0x0000000000422000-memory.dmp
        Download

        memory/2636-1-0x0000000004E60000-0x0000000004E70000-memory.dmp
        Download

        memory/2636-2-0x0000000004DC0000-0x0000000004E5C000-memory.dmp
        Download