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Analysis

  • max time kernel
    26s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2024, 07:45

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • MD5

    bca741ae4859002713ab829f3441b08d

  • SHA1

    af7c685905258533ae74ce19bc00d164857f4d9a

  • SHA256

    c3669fd2b8ecf9cca3008052d31d8e9fba6b975f7bafb5fc132a4310ab582bd1

  • SHA512

    a0b0bf14019ea3956060f98bbbdd214c3727677e1f3f50a9a5ada7cf8a864c981491b2298846354a9bc9ed9b179ab56b63bcd899f9cf6d9b2c44cdbf93c1ea43

  • SSDEEP

    49152:HvyI22SsaNYfdPBldt698dBcjHpruwBSoGdrTHHB72eh2NT:Hvf22SsaNYfdPBldt6+dBcjHpawg

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.230.182:5555

Mutex

63b26182-49d1-4b12-9435-8f7347beb179

Attributes
  • encryption_key

    980452E0925440E50CD776FEC70DFCE8D257B2C7

  • 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 family
  • Quasar payload 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:2076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2076-0-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp

    Filesize

    4KB

  • memory/2076-1-0x00000000009F0000-0x0000000000D14000-memory.dmp

    Filesize

    3.1MB

  • memory/2076-2-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

    Filesize

    9.9MB

  • memory/2076-3-0x000007FEF5B73000-0x000007FEF5B74000-memory.dmp

    Filesize

    4KB

  • memory/2076-4-0x000007FEF5B70000-0x000007FEF655C000-memory.dmp

    Filesize

    9.9MB