Overview

overview

10

Static

static

10

fb5335fadb...17.exe

windows10-2004-x64

10

fb5335fadb...17.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 17:16

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General

  • Target
    fb5335fadb8d31c385e7ff02fb6c428171ad76147460772b9e89d42f10fee017.exe
  • Size 45KB
  • Sample260709-vs87jsev2r
  • SHA256 fb5335fadb8d31c385e7ff02fb6c428171ad76147460772b9e89d42f10fee017
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • x.sexclip.blog:80

  • x.sexclip.blog:22

  • x.sexclip.blog:8080

  • x.sexclip.blog:8880

  • x.sexclip.blog:2052

  • x.sexclip.blog:2082

  • x.sexclip.blog:2086

  • x.sexclip.blog:2095

  • x.sexclip.blog:443

  • x.sexclip.blog:2053

  • x.sexclip.blog:2083

  • x.sexclip.blog:2087

  • x.sexclip.blog:2096

  • x.sexclip.blog:8443

  • www.x.sexclip.blog:80

  • www.x.sexclip.blog:22

  • www.x.sexclip.blog:8080

  • www.x.sexclip.blog:8880

  • www.x.sexclip.blog:2052

  • www.x.sexclip.blog:2082

Mutex

  • DE1WwI53v7wU

Attributes
  • delay

    0

  • install

    true

  • install_file

    b1sosj.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 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb5335fadb8d31c385e7ff02fb6c428171ad76147460772b9e89d42f10fee017.exe
    "C:\Users\Admin\AppData\Local\Temp\fb5335fadb8d31c385e7ff02fb6c428171ad76147460772b9e89d42f10fee017.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:6012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "b1sosj" /tr '"C:\Users\Admin\AppData\Roaming\b1sosj.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4252
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "b1sosj" /tr '"C:\Users\Admin\AppData\Roaming\b1sosj.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3748
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF88F.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4264
      • C:\Users\Admin\AppData\Roaming\b1sosj.exe
        "C:\Users\Admin\AppData\Roaming\b1sosj.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4256
  • C:\Users\Admin\AppData\Roaming\b1sosj.exe
    "C:\Users\Admin\AppData\Roaming\b1sosj.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5936

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmpF88F.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmpF88F.tmp.bat
        • Size 150B
        • SHA256 c3ad71b1b9b97f00ddf6a82392413b698597b4d7803d99c2a931a17233e0daee
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        b1sosj.exe
        • Path C:\Users\Admin\AppData\Roaming\b1sosj.exe
        • Size 45KB
        • SHA256 fb5335fadb8d31c385e7ff02fb6c428171ad76147460772b9e89d42f10fee017
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5936-12-0x00000000749A0000-0x000000007515C000-memory.dmp
        Download

        memory/5936-14-0x00000000749A0000-0x000000007515C000-memory.dmp
        Download

        memory/6012-0-0x00000000749B2000-0x00000000749B3000-memory.dmp
        Download

        memory/6012-1-0x00000000008A0000-0x00000000008B2000-memory.dmp
        Download

        memory/6012-2-0x00000000749A0000-0x000000007515C000-memory.dmp
        Download

        memory/6012-3-0x0000000005290000-0x000000000532C000-memory.dmp
        Download

        memory/6012-9-0x00000000749A0000-0x000000007515C000-memory.dmp
        Download