Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-01-2025 17:03

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • MD5

    d7422e5c1eaebc9c074da643c5068596

  • SHA1

    67a4cfe2f762cc3b9e1026c930b67f372550c15e

  • SHA256

    4b44ef792c0f5e3ca9a0b338928e99112c38e62df9bbe6e73a94117aa280f3e2

  • SHA512

    6f74182a8694ab02c6891a77734fc2c6c058b39ca6e039a9d6e9a882ab5362c3d652db3a976c6838c7e878fd8317df3908c1717c0723b0d31a1cd6ee9a7dabc8

  • SSDEEP

    49152:yvbe821/aQWl8P0lSk3aKA3Z+2Sonn6IFRbFefTHHB72eh2NT:yv6821/aQWl8P0lSk3DA3Z+2SonX2

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

notthesigma-29912.portmap.host:4782

notthesigma-29912.portmap.host:29912
Mutex

17e68276-ae79-40ef-9fa4-7fb92f7cf467

Attributes
  • encryption_key

    CCA2584ABCDBA5F8D87224CC2C1DF3D2471F4A7E

  • 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 family
    quasar
  • Quasar payload 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 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 SetWindowsHookEx
    PID:2600

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2600-0-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2600-1-0x00000000010D0000-0x00000000013F2000-memory.dmp

    Filesize

    3.1MB

    Download

  • memory/2600-2-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2600-3-0x000007FEF53E3000-0x000007FEF53E4000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2600-4-0x000007FEF53E0000-0x000007FEF5DCC000-memory.dmp

    Filesize

    9.9MB

    Download