Overview

overview

10

Static

static

8

pendientes.xls

windows7-x64

1

pendientes.xls

windows10-2004-x64

10

Sharing

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General

  • Target
    pendientes.xls
  • Size 314KB
  • Sample221121-sha6naeg75
  • SHA256 09051ade3d7c8bc6be358107b584eba08fdec0214cfd7c99e4b56f3e1e66d2b5
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaryopmacromacro_on_actionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • yop

C2

  • dnuocc.com:64594

  • www.dnuocc.com:64594

Mutex

  • QSR_MUTEX_OyCjWKeFudCMEKYeJX

Attributes
  • encryption_key

    In08tDaU6GKdLZ8HdsU1

  • install_name

    yors.exe

  • log_directory

    Logs

  • reconnect_delay

    7000

  • startup_key

    crdm

  • subdirectory

    yilk

Targets

    • Target
      pendientes.xls
    • Size 314KB
    • SHA256 09051ade3d7c8bc6be358107b584eba08fdec0214cfd7c99e4b56f3e1e66d2b5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaryopspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Checks computer location settings

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

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks