Overview

overview

10

Static

static

10

Silent-Skull.exe

windows10-1703-x64

10

Silent-Skull.exe

windows10-2004-x64

10

Silent-Skull.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    276s
  • max time network
    293s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240508-en
  • resource tags

    arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    03-06-2024 17:05

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General

  • Target

    Silent-Skull.exe

  • Size

    348KB

  • MD5

    8436d16727f4b911f5480809103baa87

  • SHA1

    50a1b81af0bf85af5a3ef841fe49746675313120

  • SHA256

    2dec7d06740585afafca969de80238be1d58bdb8172d45b71b47f3fe9fc9e220

  • SHA512

    ae668799e2caca582c437271e7ee51c5d679a64a7dec26e4a31909bf948d6c9f0d467a2d39b625af8471267431adeec70b89513100690c6937aae21e1b6c521d

  • SSDEEP

    3072:9FxkhjvK3tFGW8jrQ+G/3NFZLZICSAr0EXZtiNLBPp64PFvqv5bnux7E3MpdMGTE:9LL3HRsM+OFZL2HL7CRbu+8gYdfDIui

Score
10/10
quasarclientspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Client

C2

runderscore00-61208.portmap.host:61208

Mutex

QSR_MUTEX_q1SPcFNLEQ1FIcq9Po

Attributes
  • encryption_key

    qQYEXzkyhZKvRSzcxALx

  • 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.

    trojanspywarequasar
  • 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\Silent-Skull.exe
    "C:\Users\Admin\AppData\Local\Temp\Silent-Skull.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5056

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/5056-0-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
    Filesize

    4KB

    Download
  • memory/5056-1-0x0000000000700000-0x000000000075E000-memory.dmp
    Filesize

    376KB

    Download
  • memory/5056-2-0x00000000056C0000-0x0000000005C66000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/5056-3-0x0000000005230000-0x00000000052C2000-memory.dmp
    Filesize

    584KB

    Download
  • memory/5056-4-0x0000000074BA0000-0x0000000075351000-memory.dmp
    Filesize

    7.7MB

    Download
  • memory/5056-5-0x0000000005330000-0x0000000005396000-memory.dmp
    Filesize

    408KB

    Download
  • memory/5056-6-0x0000000006030000-0x0000000006042000-memory.dmp
    Filesize

    72KB

    Download
  • memory/5056-7-0x0000000006580000-0x00000000065BC000-memory.dmp
    Filesize

    240KB

    Download
  • memory/5056-8-0x0000000006730000-0x000000000673A000-memory.dmp
    Filesize

    40KB

    Download
  • memory/5056-9-0x0000000074BAE000-0x0000000074BAF000-memory.dmp
    Filesize

    4KB

    Download
  • memory/5056-10-0x0000000074BA0000-0x0000000075351000-memory.dmp
    Filesize

    7.7MB

    Download