Overview

overview

10

Static

static

10

bfd1e8a5b6...b3.exe

windows10-2004-x64

10

bfd1e8a5b6...b3.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/06/2026, 16:47

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General

  • Target
    bfd1e8a5b6542fb9622e713e2919db9a1f08fcc561d4366b6a0803999a2e4db3.exe
  • Size 45KB
  • Sample260601-vas3lsax2y
  • SHA256 bfd1e8a5b6542fb9622e713e2919db9a1f08fcc561d4366b6a0803999a2e4db3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • shopbaocaosudanang.net:443

  • shopbaocaosudanang.net:80

  • www.shopbaocaosudanang.net:443

  • www.shopbaocaosudanang.net:80

  • fakeupdates.shopbaocaosudanang.net:443

  • fakeupdates.shopbaocaosudanang.net:80

  • rat.shopbaocaosudanang.net:443

  • rat.shopbaocaosudanang.net:80

  • gootloader.shopbaocaosudanang.net:443

  • gootloader.shopbaocaosudanang.net:80

  • clop.shopbaocaosudanang.net:443

  • clop.shopbaocaosudanang.net:80

Mutex

  • PVLttD69jqgy

Attributes
  • delay

    0

  • install

    true

  • install_file

    rxe4r1em.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 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 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bfd1e8a5b6542fb9622e713e2919db9a1f08fcc561d4366b6a0803999a2e4db3.exe
    "C:\Users\Admin\AppData\Local\Temp\bfd1e8a5b6542fb9622e713e2919db9a1f08fcc561d4366b6a0803999a2e4db3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5032
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "rxe4r1em" /tr '"C:\Users\Admin\AppData\Roaming\rxe4r1em.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5700
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "rxe4r1em" /tr '"C:\Users\Admin\AppData\Roaming\rxe4r1em.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5080
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCDC.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3588
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5108
      • C:\Users\Admin\AppData\Roaming\rxe4r1em.exe
        "C:\Users\Admin\AppData\Roaming\rxe4r1em.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5696
  • C:\Users\Admin\AppData\Roaming\rxe4r1em.exe
    "C:\Users\Admin\AppData\Roaming\rxe4r1em.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:5192

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpCDC.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmpCDC.tmp.bat
        • Size 151B
        • SHA256 cc1d51631dd795ff682f31de84c6a58356ee654c7b5aa7920d9538fa9c1fc594
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        rxe4r1em.exe
        • Path C:\Users\Admin\AppData\Roaming\rxe4r1em.exe
        • Size 45KB
        • SHA256 bfd1e8a5b6542fb9622e713e2919db9a1f08fcc561d4366b6a0803999a2e4db3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5032-0-0x00000000003D0000-0x00000000003E2000-memory.dmp
        Download

        memory/5032-1-0x0000000004E70000-0x0000000004E80000-memory.dmp
        Download

        memory/5032-2-0x0000000004F20000-0x0000000004FBC000-memory.dmp
        Download