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Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    14/12/2024, 20:51

General

  • Target

    Client.exe

  • Size

    63KB

  • MD5

    4ae421ab5dc26aad7211a5bcc6ae89f2

  • SHA1

    90f1c09a58087d15688db7bf63ae889d8b453751

  • SHA256

    884eacb6f51be1e6eba1296aece06baccd3f600f258494fef2dfcc34fd257ccd

  • SHA512

    0b9689d6718749b03a38d3f681cb62f70eb96438a24ad0ca0177ffa53c70bebe8bc3e28ef46df5165baaf11a876df3fe27f5ece785f748ac2b467d79a51eb1c2

  • SSDEEP

    768:a2C46poI3iPgqUi79JKWcXveeObMbNCl1+6SCv7mqb2nIpwH1oV7Go8GdZVc6KN:aEIo5neeiMl8GbbXwZGdZVclN

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

127.0.0.1:54817

Mutex

roaroaroaraoroaroaraoraoraoarororrohrorororoaroaaoaoaoaroaroar

Attributes
  • delay

    1

  • install

    true

  • install_file

    windows defender firewall.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1412
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4792
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6F83.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:3616
      • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
        "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp6F83.tmp.bat

    Filesize

    169B

    MD5

    08850b23525344d3e506e51def699e9a

    SHA1

    325026625e50b56554dea30a3196b9cfe5901d7e

    SHA256

    9f8151bba8ed13b5dd275bb371dc6ffda22e411a5d1123cbe3b0a6efe2dfef02

    SHA512

    288fb8af982c9ec4d14e9cfb054462602b12b105e12f7b58faaa1329bb3b63b57cbff766eeac9e4ed3b0fd9a3a4ca141da0955aad5320d3f8975ed93d4ada7bd

  • C:\Users\Admin\AppData\Roaming\windows defender firewall.exe

    Filesize

    63KB

    MD5

    4ae421ab5dc26aad7211a5bcc6ae89f2

    SHA1

    90f1c09a58087d15688db7bf63ae889d8b453751

    SHA256

    884eacb6f51be1e6eba1296aece06baccd3f600f258494fef2dfcc34fd257ccd

    SHA512

    0b9689d6718749b03a38d3f681cb62f70eb96438a24ad0ca0177ffa53c70bebe8bc3e28ef46df5165baaf11a876df3fe27f5ece785f748ac2b467d79a51eb1c2

  • memory/2748-1-0x0000000000FC0000-0x0000000000FD6000-memory.dmp

    Filesize

    88KB

  • memory/2748-0-0x00007FFC76EA3000-0x00007FFC76EA5000-memory.dmp

    Filesize

    8KB

  • memory/2748-2-0x00007FFC76EA0000-0x00007FFC77962000-memory.dmp

    Filesize

    10.8MB

  • memory/2748-3-0x00007FFC76EA0000-0x00007FFC77962000-memory.dmp

    Filesize

    10.8MB

  • memory/2748-8-0x00007FFC76EA0000-0x00007FFC77962000-memory.dmp

    Filesize

    10.8MB