Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-04-2024 16:39

General

  • Target

    f85dd19dc69ace93e973bd0111676b98_JaffaCakes118.exe

  • Size

    2.5MB

  • MD5

    f85dd19dc69ace93e973bd0111676b98

  • SHA1

    31b16ef143997f726ef06e8e40118ee8662913b9

  • SHA256

    eca8b55abc0da9ef5ba867fafc91be160b5cc41732eb492524c2ed5a1f1f2757

  • SHA512

    b42f0dc0fb9f2e9f48159429eae1c5241659ec193137f5a5278f33329398ac3b46edb1e35e99a2253fc8f85dbbd93874a103f8d1c40bbb4327d135a611437e79

  • SSDEEP

    12288:9erTc6gygZxDXaAc2FnkiRtr7xC0jt6XoDIFvGpA562MrtOiwk3Ta77Hp0fWAUm0:9TqAvT/6YcFeK62MrtsfvvYFyFuofD

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

127.0.0.1:4782

Mutex

26665e14-4c4f-48fa-a94f-112ea3960adc

Attributes
  • encryption_key

    AD76909CB7E41A1165C69A30DC0727471C5BDBB3

  • 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
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f85dd19dc69ace93e973bd0111676b98_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f85dd19dc69ace93e973bd0111676b98_JaffaCakes118.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2432
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4456 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1624

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2432-0-0x000002077FEC0000-0x000002077FF42000-memory.dmp

      Filesize

      520KB

    • memory/2432-1-0x0000020701A60000-0x0000020701AE4000-memory.dmp

      Filesize

      528KB

    • memory/2432-2-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

      Filesize

      10.8MB

    • memory/2432-5-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-4-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-3-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-6-0x0000020780020000-0x0000020780070000-memory.dmp

      Filesize

      320KB

    • memory/2432-7-0x0000020780130000-0x00000207801E2000-memory.dmp

      Filesize

      712KB

    • memory/2432-8-0x00007FF6BB2C0000-0x00007FF6BB532000-memory.dmp

      Filesize

      2.4MB

    • memory/2432-9-0x00007FF82DDE0000-0x00007FF82E8A1000-memory.dmp

      Filesize

      10.8MB

    • memory/2432-11-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-12-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-13-0x000002071A4E0000-0x000002071A4F0000-memory.dmp

      Filesize

      64KB

    • memory/2432-25-0x00007FF6BB2C0000-0x00007FF6BB532000-memory.dmp

      Filesize

      2.4MB