Resubmissions

16/08/2023, 10:13

230816-l87h8aca2t 10

16/08/2023, 09:32

230816-lhxlbsbg91 10

Analysis

  • max time kernel
    1553s
  • max time network
    1557s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/08/2023, 09:32

General

  • Target

    test.exe

  • Size

    3.1MB

  • MD5

    eecdbc78d76691a6be6cecc14a09968e

  • SHA1

    01cbea73481a01dfcbf5e84abb060d2915e4684c

  • SHA256

    781ecb1f7366bf4ae82fc447898d1ec82f49a48787dff6b0bfb9a0f69e85c354

  • SHA512

    1460dea51eef202616ce842586e3c0e4b561cdaf8cdc974a2a5a2cb5c6a0d64e4e592f0c2803aa8dfba9392f07d41573802fad5bc8a48c6cf1b8651cc1d849c6

  • SSDEEP

    49152:GHl592AYawl1WPOl6NVtRkJ0xEEmxR16cbRi+oGdhTHHB72eh2NT:GH/92AYawl1WPOl6NVLkJ0xEEgR16w

Malware Config

Extracted

Family

quasar

Version

1.0

Botnet

Office

C2

7.tcp.eu.ngrok.io:11273

Mutex

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

Attributes
  • encryption_key

    5C8FA74B508E07066B897AA659A1D34132B54635

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    1

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious behavior: EnumeratesProcesses 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\test.exe
    "C:\Users\Admin\AppData\Local\Temp\test.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:2716

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2716-133-0x0000000000660000-0x0000000000984000-memory.dmp

          Filesize

          3.1MB

        • memory/2716-134-0x00007FFCF0A60000-0x00007FFCF1521000-memory.dmp

          Filesize

          10.8MB

        • memory/2716-135-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-136-0x000000001D180000-0x000000001D1D0000-memory.dmp

          Filesize

          320KB

        • memory/2716-137-0x000000001D290000-0x000000001D342000-memory.dmp

          Filesize

          712KB

        • memory/2716-140-0x000000001D1F0000-0x000000001D202000-memory.dmp

          Filesize

          72KB

        • memory/2716-141-0x000000001D250000-0x000000001D28C000-memory.dmp

          Filesize

          240KB

        • memory/2716-142-0x00007FFCF0A60000-0x00007FFCF1521000-memory.dmp

          Filesize

          10.8MB

        • memory/2716-143-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-144-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-145-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-146-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-147-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-148-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-149-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-150-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB

        • memory/2716-151-0x000000001B4C0000-0x000000001B4D0000-memory.dmp

          Filesize

          64KB