Overview

overview

10

Static

static

10

fsr.exe

windows7-x64

10

fsr.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    fsr.exe
  • Size 3.4MB
  • Sample240816-3m9vwsvbjb
  • SHA256 f894c90ca7799cbdf3c42e6f67b64b9e49353a007ccbff0a93a745660eba42b0
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarskidspersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • SKIDS

C2

  • 147.185.221.22:6712

Mutex

  • 61fb459b-8f13-40f8-a01c-e3798dae38cf

Attributes
  • encryption_key

    9E968F05BD874BA1BE086FD1774A027473823F49

  • install_name

    Windows Host Process.exe

  • log_directory

    WindowsLogs

  • reconnect_delay

    3000

  • startup_key

    Windows Host Process

  • subdirectory

    Windows

Targets

    • Target
      fsr.exe
    • Size 3.4MB
    • SHA256 f894c90ca7799cbdf3c42e6f67b64b9e49353a007ccbff0a93a745660eba42b0
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarskidsspywaretrojanpersistence

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Executes dropped EXE

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks