Analysis

  • max time kernel
    39s
  • max time network
    41s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2024 08:05

Errors

Reason
Machine shutdown

General

  • Target

    skibidirat.exe

  • Size

    3.1MB

  • MD5

    797c5548befc52f7b0dbedc8e6172184

  • SHA1

    05e5fd623d589e9790e648348f05e317d926b8c4

  • SHA256

    62e9fdaaf90da01ef28a26823e3442d73b93dc0e23d93139df631701cf6da260

  • SHA512

    2ed20953b97ae2a2dfad7735dcef327f69cd08e9d2acaefd7a23dec0890463dd5a97c5cb1fb54634a052613b55752fc3ce624939dd89ef85bcdae5d46a19e0b5

  • SSDEEP

    49152:xHobtR1o2PmNXo7WCr5Ft4Rw8FcXrYd+THHB72eh2NT:xHmRvmNXo7WCr5+w8A

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

147.185.221.18:42996

147.185.221.18:1770

Mutex

c2e1b18a-ce93-436d-ad8b-21bf89015e19

Attributes
  • encryption_key

    9E968F05BD874BA1BE086FD1774A027473823F49

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\skibidirat.exe
    "C:\Users\Admin\AppData\Local\Temp\skibidirat.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2344
    • C:\Windows\System32\shutdown.exe
      "C:\Windows\System32\shutdown.exe" /s /t 0
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:444
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa395d855 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:1776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2344-0-0x00007FFA10843000-0x00007FFA10845000-memory.dmp

    Filesize

    8KB

  • memory/2344-1-0x0000000000140000-0x0000000000464000-memory.dmp

    Filesize

    3.1MB

  • memory/2344-2-0x00007FFA10840000-0x00007FFA11301000-memory.dmp

    Filesize

    10.8MB

  • memory/2344-3-0x000000001BB60000-0x000000001BBB0000-memory.dmp

    Filesize

    320KB

  • memory/2344-4-0x000000001BC70000-0x000000001BD22000-memory.dmp

    Filesize

    712KB

  • memory/2344-5-0x000000001BB30000-0x000000001BB42000-memory.dmp

    Filesize

    72KB

  • memory/2344-6-0x000000001BBF0000-0x000000001BC2C000-memory.dmp

    Filesize

    240KB

  • memory/2344-7-0x00007FFA10843000-0x00007FFA10845000-memory.dmp

    Filesize

    8KB

  • memory/2344-8-0x00007FFA10840000-0x00007FFA11301000-memory.dmp

    Filesize

    10.8MB

  • memory/2344-10-0x00007FFA10840000-0x00007FFA11301000-memory.dmp

    Filesize

    10.8MB