Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    21-04-2024 02:21

General

  • Target

    fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe

  • Size

    5.1MB

  • MD5

    fe353fe43c1cca454ab7dec340de5fe5

  • SHA1

    2bfff8303840f55aeb50be6411e414f7c62bec66

  • SHA256

    24520b47857fb9bf8e12eaee60ac2b7ba62373b2822e180e0b20f75fd2987cf6

  • SHA512

    c526803329604a4f774967abe1407e7991a77957de5b44ef8f5006d9255c2742c908baf87cc803948da535bbc30b200aedf3cf3e3cd6bd68a69ea0ff8665d57e

  • SSDEEP

    49152:3pjFYb8mFxMQg3Q3cX5C/wnvdAlPjcmYBBgcsbJ5zraFeQQsTt8TPoLFjPi617WM:3DY4mPPt5HG6PoJ3cWf+Tv5h

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

127.0.0.1:4782

Mutex

aecbbbe6-27df-44d1-ad77-4a664950cfb8

Attributes
  • encryption_key

    743062375D40E5AA28B42E34C8CE9A6D6F47E6DD

  • 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.

  • Quasar payload 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fe353fe43c1cca454ab7dec340de5fe5_JaffaCakes118.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2084
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2084 -s 568
      2⤵
      • Program crash
      PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2084-1-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2084-0-0x0000000001240000-0x0000000001760000-memory.dmp

    Filesize

    5.1MB

  • memory/2084-3-0x0000000000B60000-0x0000000000BE4000-memory.dmp

    Filesize

    528KB

  • memory/2084-4-0x0000000074BF0000-0x00000000752DE000-memory.dmp

    Filesize

    6.9MB