Overview

overview

10

Static

static

10

273c917fc8...78.exe

windows7-x64

10

273c917fc8...78.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-01-2025 02:28

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General

  • Target

    273c917fc8fddcb94de25686720df1ea12f948dfbebffa56314b6565123ae678.exe

  • Size

    3.1MB

  • MD5

    21ce4cd2ce246c86222b57b93cdc92bd

  • SHA1

    9dc24ad846b2d9db64e5bbea1977e23bb185d224

  • SHA256

    273c917fc8fddcb94de25686720df1ea12f948dfbebffa56314b6565123ae678

  • SHA512

    ff43fe890e30d6766f51922cfd1e9c36d312fd305620954fae8c61829f58d7361ae442bf9145339904eb6a88c2629c1e83f5b8a1d78ab0d13554cf6053d194f6

  • SSDEEP

    49152:DvTI22SsaNYfdPBldt698dBcjHZqS71J/ioGdRTTHHB72eh2NT:Dvs22SsaNYfdPBldt6+dBcjHZqSOB

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

0.tcp.in.ngrok.io:14296

Mutex

cc827307-beb6-456e-b5dd-e28a204ebd45

Attributes
  • encryption_key

    93486CAE624EBAD6626412E4A7DC6221B139DAA8

  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\273c917fc8fddcb94de25686720df1ea12f948dfbebffa56314b6565123ae678.exe
    "C:\Users\Admin\AppData\Local\Temp\273c917fc8fddcb94de25686720df1ea12f948dfbebffa56314b6565123ae678.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3012

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1656-0-0x00007FFBF2983000-0x00007FFBF2985000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1656-1-0x0000000000390000-0x00000000006B4000-memory.dmp

    Filesize

    3.1MB

    Download

  • memory/1656-2-0x00007FFBF2980000-0x00007FFBF3441000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/1656-3-0x000000001B420000-0x000000001B470000-memory.dmp

    Filesize

    320KB

    Download

  • memory/1656-4-0x000000001BB90000-0x000000001BC42000-memory.dmp

    Filesize

    712KB

    Download

  • memory/1656-5-0x00007FFBF2983000-0x00007FFBF2985000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1656-6-0x00007FFBF2980000-0x00007FFBF3441000-memory.dmp

    Filesize

    10.8MB

    Download