Analysis

  • max time kernel
    125s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2024 04:19

General

  • Target

    e89bf9f9f461c14c2358cd5de1c1f1fcf6ecb18c0a978330e64263a863b19603.exe

  • Size

    349KB

  • MD5

    1b6cc280bdeeffba345f6cf8b11c2ee8

  • SHA1

    f76fd450a43cf4ac5a86c8172f5edb89538bd489

  • SHA256

    e89bf9f9f461c14c2358cd5de1c1f1fcf6ecb18c0a978330e64263a863b19603

  • SHA512

    58768ae5f0f559c08f4247f97e934b1aa252e1d913845b10fcee35e9ee807fb03ba6f81a74a821b4dead719a6195f49a3201daf55f471f5ad2aeea662366f88c

  • SSDEEP

    6144:uKMJx4pweP7kJS3i+fcwiGSUPhKA6DPusEbjL1+vcZlWE/tgE9h:uKoSUGVPF6DPus05ZlWECE9h

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office04

C2

192.168.255.139:4782

Mutex

QSR_MUTEX_ZZPYrLvQ79yjfe7PwK

Attributes
  • encryption_key

    lrTFvNaa5qg78NZPgIUJ

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e89bf9f9f461c14c2358cd5de1c1f1fcf6ecb18c0a978330e64263a863b19603.exe
    "C:\Users\Admin\AppData\Local\Temp\e89bf9f9f461c14c2358cd5de1c1f1fcf6ecb18c0a978330e64263a863b19603.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1792

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1792-0-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/1792-1-0x00000000008E0000-0x000000000093E000-memory.dmp

    Filesize

    376KB

  • memory/1792-2-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB

  • memory/1792-3-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/1792-4-0x00000000744E0000-0x0000000074BCE000-memory.dmp

    Filesize

    6.9MB