Analysis

  • max time kernel
    707s
  • max time network
    711s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/08/2023, 08:50

General

  • Target

    Client.exe

  • Size

    3.1MB

  • MD5

    4b97bd8478dcce3e5e526664af9db723

  • SHA1

    d0c1f556bbac9e81edecfedd7521b7cc1b1e78f6

  • SHA256

    8634d9e5e69c0eb0758fd4d57ee58fc53c57afc1b61d790493e725ff8f6b79f2

  • SHA512

    d7dbac6b27cde29260f5154564aa0213a2c94d6471c60e5bab4088ff027621fccd26aa5666f4b86991c84c635e2b2afd525213d2efa223d07dcbe787768458e4

  • SSDEEP

    49152:5Hl592AYawl1WPOl6NVtRkJ0xExbhEoGdaTHHB72eh2NT:5H/92AYawl1WPOl6NVLkJ0xExbq

Malware Config

Extracted

Family

quasar

Version

1.0

Botnet

Office

C2

6.tcp.eu.ngrok.io:15209

Mutex

f66b5493-61eb-4d81-92bf-7cdd5011ca71

Attributes
  • encryption_key

    5C8FA74B508E07066B897AA659A1D34132B54635

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    VC-RAT Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2960

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2960-133-0x0000000000820000-0x0000000000B44000-memory.dmp

          Filesize

          3.1MB

        • memory/2960-134-0x00007FFE31A30000-0x00007FFE324F1000-memory.dmp

          Filesize

          10.8MB

        • memory/2960-135-0x000000001B880000-0x000000001B890000-memory.dmp

          Filesize

          64KB

        • memory/2960-136-0x000000001BAE0000-0x000000001BB30000-memory.dmp

          Filesize

          320KB

        • memory/2960-137-0x000000001BBF0000-0x000000001BCA2000-memory.dmp

          Filesize

          712KB

        • memory/2960-140-0x000000001BB30000-0x000000001BB42000-memory.dmp

          Filesize

          72KB

        • memory/2960-141-0x000000001BB90000-0x000000001BBCC000-memory.dmp

          Filesize

          240KB

        • memory/2960-142-0x00007FFE31A30000-0x00007FFE324F1000-memory.dmp

          Filesize

          10.8MB

        • memory/2960-143-0x000000001B880000-0x000000001B890000-memory.dmp

          Filesize

          64KB