Overview

overview

10

Static

static

10

3f55e9b654...ac.exe

windows10-2004-x64

10

3f55e9b654...ac.exe

windows11-ltsc_2024-x64

10

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, 03:05

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General

  • Target
    3f55e9b6542684cbe6ad853fc7a0c1df1b0e8de0a7c69fef131e93c82f3712ac.exe
  • Size 64KB
  • Sample260720-dk69jsdv2l
  • SHA256 3f55e9b6542684cbe6ad853fc7a0c1df1b0e8de0a7c69fef131e93c82f3712ac
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Signatures

  • Family: AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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.

    execution
  • 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 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f55e9b6542684cbe6ad853fc7a0c1df1b0e8de0a7c69fef131e93c82f3712ac.exe
    "C:\Users\Admin\AppData\Local\Temp\3f55e9b6542684cbe6ad853fc7a0c1df1b0e8de0a7c69fef131e93c82f3712ac.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4300
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "66lottery" /tr '"C:\Users\Admin\AppData\Roaming\66lottery.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:120
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "66lottery" /tr '"C:\Users\Admin\AppData\Roaming\66lottery.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2656
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC71F.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4500
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4336
      • C:\Users\Admin\AppData\Roaming\66lottery.exe
        "C:\Users\Admin\AppData\Roaming\66lottery.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2000
  • C:\Users\Admin\AppData\Roaming\66lottery.exe
    "C:\Users\Admin\AppData\Roaming\66lottery.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4016

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        tmpC71F.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmpC71F.tmp.bat
        • Size 153B
        • SHA256 ab543c8e833e3906d71c82f04b9397bfce7baa12271904779fe29d695b41186e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        66lottery.exe
        • Path C:\Users\Admin\AppData\Roaming\66lottery.exe
        • Size 64KB
        • SHA256 3f55e9b6542684cbe6ad853fc7a0c1df1b0e8de0a7c69fef131e93c82f3712ac
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4016-12-0x0000000074510000-0x0000000074CCC000-memory.dmp
        Download

        memory/4016-14-0x0000000074510000-0x0000000074CCC000-memory.dmp
        Download

        memory/4016-15-0x0000000074510000-0x0000000074CCC000-memory.dmp
        Download

        memory/4016-16-0x0000000074510000-0x0000000074CCC000-memory.dmp
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        memory/4300-0-0x0000000074522000-0x0000000074523000-memory.dmp
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        memory/4300-1-0x0000000000E20000-0x0000000000E36000-memory.dmp
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        memory/4300-2-0x0000000074510000-0x0000000074CCC000-memory.dmp
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        memory/4300-3-0x0000000005C00000-0x0000000005C9C000-memory.dmp
        Download

        memory/4300-9-0x0000000074510000-0x0000000074CCC000-memory.dmp
        Download