Overview

overview

10

Static

static

10

2a45f8ec4d...1a.exe

windows10-2004-x64

10

2a45f8ec4d...1a.exe

windows11-21h2-x64

10

Analysis

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

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 07:18

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General

  • Target
    2a45f8ec4d223428180cf31154a3e213efefaa7d0dc8e46e335360a7e1c6bb1a.exe
  • Size 45KB
  • Sample260602-h5ga3shs2r
  • SHA256 2a45f8ec4d223428180cf31154a3e213efefaa7d0dc8e46e335360a7e1c6bb1a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • xnxx3.com:443

  • xnxx3.com:80

  • xnxx3.com:7797

  • xnxx3.com:8707

  • xnxx3.com:6620

  • www.xnxx3.com:443

  • www.xnxx3.com:80

  • www.xnxx3.com:7797

  • www.xnxx3.com:8707

  • www.xnxx3.com:6620

  • formbook.xnxx3.com:443

  • formbook.xnxx3.com:80

  • formbook.xnxx3.com:7797

  • formbook.xnxx3.com:8707

  • formbook.xnxx3.com:6620

  • darkside.xnxx3.com:443

  • darkside.xnxx3.com:80

  • darkside.xnxx3.com:7797

  • darkside.xnxx3.com:8707

  • darkside.xnxx3.com:6620

Mutex

  • 29be6xLtqbQk

Attributes
  • delay

    0

  • install

    true

  • install_file

    wb4flsp.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\2a45f8ec4d223428180cf31154a3e213efefaa7d0dc8e46e335360a7e1c6bb1a.exe
    "C:\Users\Admin\AppData\Local\Temp\2a45f8ec4d223428180cf31154a3e213efefaa7d0dc8e46e335360a7e1c6bb1a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "wb4flsp" /tr '"C:\Users\Admin\AppData\Roaming\wb4flsp.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "wb4flsp" /tr '"C:\Users\Admin\AppData\Roaming\wb4flsp.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3632
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5724.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1136
      • C:\Users\Admin\AppData\Roaming\wb4flsp.exe
        "C:\Users\Admin\AppData\Roaming\wb4flsp.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4904
  • C:\Users\Admin\AppData\Roaming\wb4flsp.exe
    "C:\Users\Admin\AppData\Roaming\wb4flsp.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3492

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp5724.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp5724.tmp.bat
        • Size 151B
        • SHA256 77abc9e12ea0bc08d8727d8f27705031ff0d8e995ab9b4775a5071b13d411a72
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        wb4flsp.exe
        • Path C:\Users\Admin\AppData\Roaming\wb4flsp.exe
        • Size 45KB
        • SHA256 2a45f8ec4d223428180cf31154a3e213efefaa7d0dc8e46e335360a7e1c6bb1a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1500-0-0x0000000000960000-0x0000000000972000-memory.dmp
        Download

        memory/1500-1-0x0000000005540000-0x0000000005550000-memory.dmp
        Download

        memory/1500-2-0x00000000053F0000-0x000000000548C000-memory.dmp
        Download