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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/12/2024, 12:10

General

  • Target

    864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe

  • Size

    3.1MB

  • MD5

    7f888b6cbd5062a7558eea61eb9a9ca2

  • SHA1

    2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87

  • SHA256

    864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad

  • SHA512

    7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8

  • SSDEEP

    49152:/v2lL26AaNeWgPhlmVqvMQ7XSKKQSYmzwXoGdVTHHB72eh2NT:/v2L26AaNeWgPhlmVqkQ7XSKKQSq

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

llordiWasHere-55715.portmap.host:55715

Mutex

124c5996-13c0-46a2-804a-191042a109db

Attributes
  • encryption_key

    5F48258CBD7D9014A9443146E8A3D837D1715CAE

  • 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 family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe
    "C:\Users\Admin\AppData\Local\Temp\864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3636
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3772

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

    Filesize

    3.1MB

    MD5

    7f888b6cbd5062a7558eea61eb9a9ca2

    SHA1

    2acfb5c3e7b8e569ea52397154b9b3ffb44e7d87

    SHA256

    864bec690da391f258de447606ac18baa79672b665ba321a4da67ed59d567cad

    SHA512

    7da70e844e0fce4b4bbc70db89503b95b6514cabf9ce9cf66fed643f6c11aafc5e7a8f385b5d16f7fa802cc47c9200bf486030834551d14c55078307ef7e93d8

  • memory/3636-0-0x00007FF94C153000-0x00007FF94C155000-memory.dmp

    Filesize

    8KB

  • memory/3636-1-0x0000000000DF0000-0x0000000001114000-memory.dmp

    Filesize

    3.1MB

  • memory/3636-2-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

    Filesize

    10.8MB

  • memory/3636-9-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

    Filesize

    10.8MB

  • memory/3772-10-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

    Filesize

    10.8MB

  • memory/3772-11-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

    Filesize

    10.8MB

  • memory/3772-12-0x000000001BAF0000-0x000000001BB40000-memory.dmp

    Filesize

    320KB

  • memory/3772-13-0x000000001BC00000-0x000000001BCB2000-memory.dmp

    Filesize

    712KB

  • memory/3772-14-0x00007FF94C150000-0x00007FF94CC11000-memory.dmp

    Filesize

    10.8MB