Overview

overview

10

Static

static

10

Client-built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample240806-psnb7ayhpm
  • SHA256 eeda6e9e2735a3b9c041434438bd5895248618da731a6aa61a5ab856cf2aace9
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarcrashhandlercredential_accessdiscoveryspywarestealertrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • CrashHandler

C2

  • gakimyny-40562.portmap.host:40562

Mutex

  • 46e7ef3b-8d62-4396-a1b6-7d8a2353e907

Attributes
  • encryption_key

    4CCD03EE2B3F5EBE1286E32B25E48A9D2C6CC0F5

  • install_name

    incognito.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    CrashHandler

  • subdirectory

    SubDir

Targets

    • Target
      Client-built.exe
    • Size 3.1MB
    • SHA256 eeda6e9e2735a3b9c041434438bd5895248618da731a6aa61a5ab856cf2aace9
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarcrashhandlercredential_accessdiscoveryspywarestealertrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

      credential_accessstealer

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads user/profile data of web browsers

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

      spywarestealer
    behavioral1

MITRE ATT&CK Enterprise v15

Tasks