Overview

overview

10

Static

static

10

MsDefender.exe

windows10-2004-x64

10

MsDefender.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    MsDefender.exe
  • Size 3.5MB
  • Sample260405-kfvtaact2q
  • SHA256 7e940a6a598353c3a3e784f66e64165e5d1359ba168090a280c8550a52a97b39
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defenderquasar

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Defender

C2

  • fly8889.net:443

  • fly88bi.jp.net:443

  • open88-2.com :443

  • welcome2amway.com:443

Mutex

  • edb9632e-5121-4e6b-b6dd-6fe78816a3a1

Attributes
  • encryption_key

    2DA8E1B5D18EAA4561218BCAF7CC51C403CE73ED

  • install_name

    MsDefender.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Defender Service

  • subdirectory

    Microsoft

Signatures

  • Quasar family
    quasar
  • Quasar payload 1 IoCs
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • MsDefender.exe
    .exe 3.5MB

MsDefender.exe

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 7e940a6a598353c3a3e784f66e64165e5d1359ba168090a280c8550a52a97b39
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Quasar payload

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
3269806
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE
PDB paths