Resubmissions

08/05/2025, 20:31

250508-za4lkaar2s 10

07/05/2025, 21:52

250507-1rdxxaxrw6 10

07/05/2025, 16:33

250507-t2rhestvhy 10

07/05/2025, 13:51

250507-q6b2rastfy 10

07/05/2025, 13:46

250507-q2zl9astd1 8

General

  • Target

    4363463463464363463463463.exe

  • Size

    10KB

  • Sample

    250508-za4lkaar2s

  • MD5

    2a94f3960c58c6e70826495f76d00b85

  • SHA1

    e2a1a5641295f5ebf01a37ac1c170ac0814bb71a

  • SHA256

    2fcad226b17131da4274e1b9f8f31359bdd325c9568665f08fd1f6c5d06a23ce

  • SHA512

    fbf55b55fcfb12eb8c029562956229208b9e8e2591859d6336c28a590c92a4d0f7033a77c46ef6ebe07ddfca353aba1e84b51907cd774beab148ee901c92d62f

  • SSDEEP

    192:xlwayyHOXGc20L7BIW12n/ePSjiTlzkGu8stYcFwVc03KY:xlwwHe/20PKn/cLTlHuptYcFwVc03K

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

epotiz-56104.portmap.host:56104

Mutex

dff263c5-5f46-4ebd-b314-af4f281b1196

Attributes
  • encryption_key

    91AE6D01E5588CB2EC925069EE1425C401902592

  • install_name

    Realtek HD Audio Manager.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Realtek HD Audio Manager

  • subdirectory

    Realtek HD Audio Manager

Extracted

Family

quasar

Version

1.4.1

Botnet

Nigga

C2

yzs-42879.portmap.host:42879

Mutex

57d72303-b5e9-46aa-8cc4-9690809c1a9e

Attributes
  • encryption_key

    F1EBDB1862062F9265C0B5AC4D02C76D026534D0

  • install_name

    svchost.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    Steam

Targets

    • Target

      4363463463464363463463463.exe

    • Size

      10KB

    • MD5

      2a94f3960c58c6e70826495f76d00b85

    • SHA1

      e2a1a5641295f5ebf01a37ac1c170ac0814bb71a

    • SHA256

      2fcad226b17131da4274e1b9f8f31359bdd325c9568665f08fd1f6c5d06a23ce

    • SHA512

      fbf55b55fcfb12eb8c029562956229208b9e8e2591859d6336c28a590c92a4d0f7033a77c46ef6ebe07ddfca353aba1e84b51907cd774beab148ee901c92d62f

    • SSDEEP

      192:xlwayyHOXGc20L7BIW12n/ePSjiTlzkGu8stYcFwVc03KY:xlwwHe/20PKn/cLTlHuptYcFwVc03K

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v16

Tasks

OSZAR »