Analysis

  • max time kernel
    149s
  • 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
    26-11-2024 18:03

General

  • Target

    RuntimeBroker.exe

  • Size

    48KB

  • MD5

    2cf2fb01a8362489f63554136ca9f1fa

  • SHA1

    408c57e91927664c2075606c8a4687b42704340e

  • SHA256

    2ae77e1af8c3932f0ab68d03c5dafb8a743eb25243a1b6a55a488c3884d8517b

  • SHA512

    5ae02306c4107712543b7bb3a061f3ddee93b19121efead18f6b73eff375329bbaffa4f8366dce8df202237824b24fca8e7bf7b0fa5d8fa5b4bff163dcfb404a

  • SSDEEP

    768:+ujYs1TUET1/WUT1V9mo2qzzyYA8STpFWPIwZ2kn0bhTGFD5bvjToTc/442UBDZB:+ujYs1TU0r2IAfu2zbhTG/bQTK2idHh

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

hand-incorrect.gl.at.ply.gg:7439

Mutex

wGBckV1hzh4H

Attributes
  • delay

    3

  • install

    true

  • install_file

    RuntimeBroker.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4812
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
    1⤵
      PID:768
    • C:\Windows\System32\oobe\UserOOBEBroker.exe
      C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
      1⤵
      • Drops file in Windows directory
      PID:2896
    • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
      C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
      1⤵
      • System Location Discovery: System Language Discovery
      PID:3544
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /0
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2088

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2088-16-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-15-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-18-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-12-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-13-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-8-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-14-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-17-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-7-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/2088-6-0x000002BCFFB10000-0x000002BCFFB11000-memory.dmp

      Filesize

      4KB

    • memory/4812-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

      Filesize

      4KB

    • memory/4812-1-0x0000000000BF0000-0x0000000000C02000-memory.dmp

      Filesize

      72KB

    • memory/4812-5-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

      Filesize

      4KB

    • memory/4812-3-0x0000000006220000-0x00000000062BC000-memory.dmp

      Filesize

      624KB

    • memory/4812-2-0x0000000005B70000-0x0000000005BD6000-memory.dmp

      Filesize

      408KB