Analysis

  • max time kernel
    863s
  • max time network
    869s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-08-2024 05:03

General

  • Target

    GensisLoader.exe

  • Size

    3.1MB

  • MD5

    5c085700fda2c1047873e097f18c4b52

  • SHA1

    058c3a0c25670219eb41efac7055c9335796b6dd

  • SHA256

    e7b85652cc26274a0cf5b62c204b8cb4b3a592ec6582f300ec9ba0cc3bdf171b

  • SHA512

    be44dfbdcd32716c267c08710130f12eb97f9b7b827859a5d73824694dbdd1ef9ddea72850865991fa8eee97cc9dbeae02f06efa58acd9b931ead8a5d1b5e913

  • SSDEEP

    49152:bvJlL26AaNeWgPhlmVqvMQ7XSKGjd7kbFHPoGd63THHB72eh2NT:bvnL26AaNeWgPhlmVqkQ7XSKGjqv

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

147.185.221.18:42996

147.185.221.18:1770

Mutex

aef6df25-e90d-4712-99d2-9ec0dbe8e337

Attributes
  • encryption_key

    8BD05243304A2E80E6CB2DD2A023CA800A308299

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\GensisLoader.exe
    "C:\Users\Admin\AppData\Local\Temp\GensisLoader.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4520
  • 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 --field-trial-handle=4416,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=4344 /prefetch:8
    1⤵
      PID:2820
    • 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 --field-trial-handle=3668,i,3239535018877284530,3457823197501312703,262144 --variations-seed-version --mojo-platform-channel-handle=3928 /prefetch:8
      1⤵
        PID:1884

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/4520-0-0x00007FF888EE3000-0x00007FF888EE5000-memory.dmp

        Filesize

        8KB

      • memory/4520-1-0x0000000000400000-0x0000000000724000-memory.dmp

        Filesize

        3.1MB

      • memory/4520-2-0x00007FF888EE0000-0x00007FF8899A1000-memory.dmp

        Filesize

        10.8MB

      • memory/4520-3-0x000000001BE30000-0x000000001BE80000-memory.dmp

        Filesize

        320KB

      • memory/4520-4-0x000000001BF40000-0x000000001BFF2000-memory.dmp

        Filesize

        712KB

      • memory/4520-5-0x00007FF888EE3000-0x00007FF888EE5000-memory.dmp

        Filesize

        8KB

      • memory/4520-6-0x00007FF888EE0000-0x00007FF8899A1000-memory.dmp

        Filesize

        10.8MB

      • memory/4520-7-0x000000001BE00000-0x000000001BE12000-memory.dmp

        Filesize

        72KB

      • memory/4520-8-0x000000001BEC0000-0x000000001BEFC000-memory.dmp

        Filesize

        240KB