Overview

overview

10

Static

static

10

81c8aa21d8...be.exe

windows10-2004-x64

10

81c8aa21d8...be.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    60s
  • max time network
    58s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/06/2026, 19:42

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General

  • Target
    81c8aa21d80ef118e96c21635d1a9f5b96706a1afb34450254f38de17e425ebe.exe
  • Size 45KB
  • Sample260628-ye6faadv6q
  • SHA256 81c8aa21d80ef118e96c21635d1a9f5b96706a1afb34450254f38de17e425ebe
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 4breaker.com:80

  • 4breaker.com:22

  • 4breaker.com:8080

  • 4breaker.com:8880

  • 4breaker.com:2052

  • 4breaker.com:2082

  • 4breaker.com:2086

  • 4breaker.com:2095

  • 4breaker.com:443

  • 4breaker.com:2053

  • 4breaker.com:2083

  • 4breaker.com:2087

  • 4breaker.com:2096

  • 4breaker.com:8443

  • www.4breaker.com:80

  • www.4breaker.com:22

  • www.4breaker.com:8080

  • www.4breaker.com:8880

  • www.4breaker.com:2052

  • www.4breaker.com:2082

Mutex

  • V44XzRMlgyoh

Attributes
  • delay

    0

  • install

    true

  • install_file

    l501c.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 1 IoCs
    rat
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 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 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\81c8aa21d80ef118e96c21635d1a9f5b96706a1afb34450254f38de17e425ebe.exe
    "C:\Users\Admin\AppData\Local\Temp\81c8aa21d80ef118e96c21635d1a9f5b96706a1afb34450254f38de17e425ebe.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5860
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "l501c" /tr '"C:\Users\Admin\AppData\Roaming\l501c.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "l501c" /tr '"C:\Users\Admin\AppData\Roaming\l501c.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:6048
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3803.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3636
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5992
      • C:\Users\Admin\AppData\Roaming\l501c.exe
        "C:\Users\Admin\AppData\Roaming\l501c.exe"
        3⤵
          PID:4184
    • C:\Users\Admin\AppData\Roaming\l501c.exe
      "C:\Users\Admin\AppData\Roaming\l501c.exe"
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4796

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          tmp3803.tmp.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmp3803.tmp.bat
          • Size 149B
          • SHA256 725b88bc7922568f213fccc8af75f629b1f133b7ddc42837a941dacb9e7b944f
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          l501c.exe
          • Path C:\Users\Admin\AppData\Roaming\l501c.exe
          • Size 45KB
          • SHA256 81c8aa21d80ef118e96c21635d1a9f5b96706a1afb34450254f38de17e425ebe
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/4796-12-0x0000000074AA0000-0x000000007525C000-memory.dmp
          Download

          memory/4796-14-0x0000000074AA0000-0x000000007525C000-memory.dmp
          Download

          memory/5860-0-0x0000000074AB2000-0x0000000074AB3000-memory.dmp
          Download

          memory/5860-1-0x00000000004B0000-0x00000000004C2000-memory.dmp
          Download

          memory/5860-2-0x0000000074AA0000-0x000000007525C000-memory.dmp
          Download

          memory/5860-3-0x0000000005010000-0x00000000050AC000-memory.dmp
          Download

          memory/5860-9-0x0000000074AA0000-0x000000007525C000-memory.dmp
          Download