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Overview

overview

10

Static

static

10

fontdrvhost.exe

windows7-x64

10

fontdrvhost.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/08/2023, 23:44

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General

  • Target

    fontdrvhost.exe

  • Size

    3.1MB

  • MD5

    3aaaf4be968f7846cc3697959a6ba5ec

  • SHA1

    66c6de49521762033bc0f08d2fc2a18c2c678197

  • SHA256

    29f9003753e24d20e597b7c71661dadd221b011c9f14531e25e0bf1c55145123

  • SHA512

    6626e7e982e65c02fac4b9ae40f5f57e7bc4e79aaa08c9aa12d4b42f1fee0ca6449608972dbe19d634fe48cd8835f8fa5456780f62da143614b28a1f18489ecf

  • SSDEEP

    49152:fvve821/aQWl8P0lSk3aKA3Z+new/6BxyLoGd0qQTHHB72eh2NT:fvm821/aQWl8P0lSk3DA3Z+n5/5E

Score
10/10
quasarmy vmspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

My VM

C2

server1.trustedvpnservices.com:13832

higradevpn.xyz:13832
Mutex

071e2576-e94a-492e-8303-baae1cb4641c

Attributes
  • encryption_key

    402F6F1B2F63357285F585A5880FBC2C0F468F55

  • install_name

    fontdrvhost.exe

  • log_directory

    CrashLogs

  • reconnect_delay

    3000

  • startup_key

    Usermode Font Driver Host

  • subdirectory

    C:\Windows\System32

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

    trojanspywarequasar
  • Quasar payload 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fontdrvhost.exe
    "C:\Users\Admin\AppData\Local\Temp\fontdrvhost.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:468

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/468-0-0x0000000000BB0000-0x0000000000ED4000-memory.dmp

    Filesize

    3.1MB

    Download

  • memory/468-1-0x00007FFEB3E50000-0x00007FFEB4911000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/468-2-0x000000001BC60000-0x000000001BC70000-memory.dmp

    Filesize

    64KB

    Download

  • memory/468-3-0x00007FFEB3E50000-0x00007FFEB4911000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/468-4-0x000000001BC60000-0x000000001BC70000-memory.dmp

    Filesize

    64KB

    Download