Overview

overview

10

Static

static

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample260408-vrt18sgz5k
  • SHA256 71ba235e10e2ac8f4f661b5f0798dd5c838e20945b2ad96636875ccda3cd0a5e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
office04quasar

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • xn--eck4dzdq88wogxb.jpn.com:443

  • www.xn--eck4dzdq88wogxb.jpn.com:443

  • xn--eck4dzdq88wogxb.jpn.com:80

  • www.xn--eck4dzdq88wogxb.jpn.com:80

Mutex

  • 95d7ffa3-8ca5-4b69-803f-37528a908e60

Attributes
  • encryption_key

    ED3227F773701D05083B11A65776F95F93EEEF5E

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

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

    Checks for missing Authenticode signature.

File Explorer

  • Client-built.exe
    .exe 3.1MB

Client-built.exe

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 71ba235e10e2ac8f4f661b5f0798dd5c838e20945b2ad96636875ccda3cd0a5e
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:4windowsx86arch:x86

  • Quasar payload

  • Unsigned PE

    Checks for missing Authenticode signature.

Password
Hieu@123
Minor OS version
0
Major OS version
4
Entry point
3269966
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