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General

  • Target

    FortniteAim.exe

  • Size

    37KB

  • Sample

    250101-edfzfstmcy

  • MD5

    5261f9f9d7b3f23de05daa9832f4a278

  • SHA1

    3c790285c1462f1c513539fb2616ac2c5c91065d

  • SHA256

    a749a50405c8bf369db729136cff6f063df776dc9e8658d3cb50af1653691bba

  • SHA512

    78c4c92c5b999edbecfe42258ff88daff7520bbaf890a07a5c7abfdd4ca58f422d1e5acb54dba92dc698d54d50687c35c11c895e66280b63a14fe263b557d4b9

  • SSDEEP

    384:8Lru2Pp7xeHnMnE9WNMrF6CsoEfvnDLf/oIURAfKAB6y6hTVk3QNZe55/f1i8r2+:sxW6XFnDnUOp6h6Y0L1rfooBotfH7

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Runtime Broker

C2

92.221.125.55:49868

Mutex

73f0bf3a-83f3-424b-b7a1-a8200df3e317

Attributes
  • encryption_key

    5CB2755608EFDB1313EF4F2ACEA101833F5AEE2B

  • install_name

    Runtime Broker.exe

  • log_directory

    Logs

  • reconnect_delay

    100

  • startup_key

    System

  • subdirectory

    SubDir

Targets

    • Target

      FortniteAim.exe

    • Size

      37KB

    • MD5

      5261f9f9d7b3f23de05daa9832f4a278

    • SHA1

      3c790285c1462f1c513539fb2616ac2c5c91065d

    • SHA256

      a749a50405c8bf369db729136cff6f063df776dc9e8658d3cb50af1653691bba

    • SHA512

      78c4c92c5b999edbecfe42258ff88daff7520bbaf890a07a5c7abfdd4ca58f422d1e5acb54dba92dc698d54d50687c35c11c895e66280b63a14fe263b557d4b9

    • SSDEEP

      384:8Lru2Pp7xeHnMnE9WNMrF6CsoEfvnDLf/oIURAfKAB6y6hTVk3QNZe55/f1i8r2+:sxW6XFnDnUOp6h6Y0L1rfooBotfH7

    • 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

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks

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