Overview

overview

10

Static

static

10

bbc09e489b...4c.exe

windows10-2004-x64

10

bbc09e489b...4c.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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, 15:40

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General

  • Target
    bbc09e489b8771fbb150d04a3a16be8cc2b0175338c6cb4fdaa0a734255a2f4c.exe
  • Size 45KB
  • Sample260601-s4f9sshv5w
  • SHA256 bbc09e489b8771fbb150d04a3a16be8cc2b0175338c6cb4fdaa0a734255a2f4c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • rexxx.com:443

  • rexxx.com:80

  • rexxx.com:7797

  • rexxx.com:8707

  • rexxx.com:6620

  • www.rexxx.com:443

  • www.rexxx.com:80

  • www.rexxx.com:7797

  • www.rexxx.com:8707

  • www.rexxx.com:6620

  • mydoom.rexxx.com:443

  • mydoom.rexxx.com:80

  • mydoom.rexxx.com:7797

  • mydoom.rexxx.com:8707

  • mydoom.rexxx.com:6620

  • triton.rexxx.com:443

  • triton.rexxx.com:80

  • triton.rexxx.com:7797

  • triton.rexxx.com:8707

  • triton.rexxx.com:6620

Mutex

  • Ol6OqG9EZdgt

Attributes
  • delay

    0

  • install

    true

  • install_file

    1pepny.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 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bbc09e489b8771fbb150d04a3a16be8cc2b0175338c6cb4fdaa0a734255a2f4c.exe
    "C:\Users\Admin\AppData\Local\Temp\bbc09e489b8771fbb150d04a3a16be8cc2b0175338c6cb4fdaa0a734255a2f4c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5064
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "1pepny" /tr '"C:\Users\Admin\AppData\Roaming\1pepny.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2660
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "1pepny" /tr '"C:\Users\Admin\AppData\Roaming\1pepny.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5112
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp24E8.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4928
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2728
      • C:\Users\Admin\AppData\Roaming\1pepny.exe
        "C:\Users\Admin\AppData\Roaming\1pepny.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:852
  • C:\Users\Admin\AppData\Roaming\1pepny.exe
    "C:\Users\Admin\AppData\Roaming\1pepny.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3344

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp24E8.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp24E8.tmp.bat
        • Size 150B
        • SHA256 fc0362ef51d8b094cc918d65eafc1d146371ec5595bc797a2c4259e85661147a
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        1pepny.exe
        • Path C:\Users\Admin\AppData\Roaming\1pepny.exe
        • Size 45KB
        • SHA256 bbc09e489b8771fbb150d04a3a16be8cc2b0175338c6cb4fdaa0a734255a2f4c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5064-0-0x0000000000B80000-0x0000000000B92000-memory.dmp
        Download

        memory/5064-1-0x00000000056F0000-0x0000000005700000-memory.dmp
        Download

        memory/5064-2-0x0000000005620000-0x00000000056BC000-memory.dmp
        Download