Analysis

  • max time kernel
    129s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2023 15:07

General

  • Target

    bSee.exe

  • Size

    348KB

  • MD5

    629cefe795be0f1fd1ae952cc1eb79de

  • SHA1

    faedb770efe20006272183a5f6e4c99e39754c12

  • SHA256

    d47e620d1c305da86a151ae4e615aedcb53448c66808998251b407831d8f669b

  • SHA512

    0d774ce706def61a647b02bad28e76ef1d16475ac0b89faf50901b0496fe46e730f857eb8755dc6880fbf0f7e119518cc0dd67d930c7037bb2d3f6b75d0fb5af

  • SSDEEP

    6144:izNHXf500MJb3+/8baFioEbNX3OaHZ77T4RRC:8d50XLo+5XT4RRC

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

nodetecton.ddns.net:5552

Mutex

QSR_MUTEX_PV7LCoiUmiwD1RBPCq

Attributes
  • encryption_key

    eZUVZ8omJzgRh5woZARI

  • 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bSee.exe
    "C:\Users\Admin\AppData\Local\Temp\bSee.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1768

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1768-0-0x00000000011D0000-0x000000000122E000-memory.dmp

    Filesize

    376KB

  • memory/1768-1-0x0000000074EB0000-0x000000007559E000-memory.dmp

    Filesize

    6.9MB

  • memory/1768-2-0x0000000000A80000-0x0000000000AC0000-memory.dmp

    Filesize

    256KB

  • memory/1768-3-0x0000000074EB0000-0x000000007559E000-memory.dmp

    Filesize

    6.9MB

  • memory/1768-4-0x0000000000A80000-0x0000000000AC0000-memory.dmp

    Filesize

    256KB