General

  • Target

    74c78834a7cc678d1d894b34616cd540N.exe

  • Size

    2.0MB

  • Sample

    240825-bykats1drd

  • MD5

    74c78834a7cc678d1d894b34616cd540

  • SHA1

    2f44f3133de7143a241898d9e108aea1622705d6

  • SHA256

    680fd298f66fddbefeb7bcab0d39433549f59549faf8cdb251f8948a5fb8b1db

  • SHA512

    510381143f23262db4f153655badde2bb6c29859014e12f511c35b65d0b46d82920fd90a8c0383c1c9e766b043d09a95b203270bc2e0e79fd4cef045e9cea94a

  • SSDEEP

    24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYL:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YB

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

EbayProfiles

C2

5.8.88.191:443

sockartek.icu:443

Mutex

QSR_MUTEX_0kBRNrRz5TDLEQouI0

Attributes
  • encryption_key

    MWhG6wsClMX8aJM2CVXT

  • install_name

    winsock.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    win defender run

  • subdirectory

    SubDir

Extracted

Family

azorult

C2

http://0x21.in:8000/_az/

Targets

    • Target

      74c78834a7cc678d1d894b34616cd540N.exe

    • Size

      2.0MB

    • MD5

      74c78834a7cc678d1d894b34616cd540

    • SHA1

      2f44f3133de7143a241898d9e108aea1622705d6

    • SHA256

      680fd298f66fddbefeb7bcab0d39433549f59549faf8cdb251f8948a5fb8b1db

    • SHA512

      510381143f23262db4f153655badde2bb6c29859014e12f511c35b65d0b46d82920fd90a8c0383c1c9e766b043d09a95b203270bc2e0e79fd4cef045e9cea94a

    • SSDEEP

      24576:su6J33O0c+JY5UZ+XC0kGso6FaI1IXgM6YmenKKSUlmDaGJTA4Pqa6jUvOkQwKYL:2u0c++OCvkGs9Fap5aLKLkDl+dUvO9YB

    • Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks