Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-12-2024 10:00

General

  • Target

    xx.exe

  • Size

    3.1MB

  • MD5

    b04c1d7a23fb7a01818661a60a0b5ae5

  • SHA1

    1c5c265f823208aa27d0df9cfa97ff382f32cf0c

  • SHA256

    5c4239be04a1ead5ea81bc92463d72209411882b369dd58704769d409192e1ff

  • SHA512

    4e0ecd65d2337507989a479ab4f18a43c128a4cbb54180cce230e0c69a32bf6a88830b94c39a08d3d8fbb0cc169c0ebe914a0bc6924698e260efbade660c4e75

  • SSDEEP

    49152:PvbI22SsaNYfdPBldt698dBcjHUv9w8BxzYoGdR+HTHHB72eh2NT:Pvk22SsaNYfdPBldt6+dBcjHiwbI

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

82.64.156.123:80

Mutex

22fbcdf1-92c4-4afa-81b3-8940a1676372

Attributes
  • encryption_key

    030FEA14D8B12C3F86A426D37EB0940C8225BBC8

  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\xx.exe
    "C:\Users\Admin\AppData\Local\Temp\xx.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2016-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

    Filesize

    4KB

  • memory/2016-1-0x0000000000C50000-0x0000000000F74000-memory.dmp

    Filesize

    3.1MB

  • memory/2016-2-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

    Filesize

    9.9MB

  • memory/2016-3-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

    Filesize

    4KB

  • memory/2016-4-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

    Filesize

    9.9MB