Overview

overview

10

Static

static

10

fbc526c8f2...b4.exe

windows7-x64

10

fbc526c8f2...b4.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4.exe
  • Size 348KB
  • Sample240406-b851aahd94
  • SHA256 fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
office04quasar

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • promesasalvaro1.duckdns.org:4782

Mutex

  • QSR_MUTEX_l1M93VuqIyiH8hEQ4I

Attributes
  • encryption_key

    2g2JgGNmrJPJ7nSHkWmk

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Detects executables containing common artifacts observed in infostealers 1 IoCs
  • Quasar family
    quasar
  • Quasar payload 1 IoCs
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4.exe
    .exe 348KB

fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4.exe

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4
  • MD5 SHA1 SHA512 SSDEEP
windows:4windowsx86arch:x86

  • Detects Windows executables referencing non-Windows User-Agents

  • Detects executables containing common artifacts observed in infostealers

  • Quasar payload

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
4
Entry point
360926
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