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

  • Sample

    221121-sha6naeg75

  • MD5

    3b4985250d19c9a0d4aa1e772b247075

  • SHA1

    243077c6c342ebbfe77b43ae91da534f9b509f9a

  • SHA256

    09051ade3d7c8bc6be358107b584eba08fdec0214cfd7c99e4b56f3e1e66d2b5

  • SHA512

    8d665cbf861751de50a71e52c4d80baaaaaff15233ea1c4256d85b1d3842625d16287310dea09231b7c1b7915c2adf8e4df25c87a83a367b662b01263e1a2930

  • SSDEEP

    6144:dxEtjPOtioVjDGUU1qfDlavx+W2QnAWIsfKxxOJCSynWqqVP4qk9U6gKfBfUzYKN:QanWqGPdURh2FMCd

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

    • MD5

      3b4985250d19c9a0d4aa1e772b247075

    • SHA1

      243077c6c342ebbfe77b43ae91da534f9b509f9a

    • SHA256

      09051ade3d7c8bc6be358107b584eba08fdec0214cfd7c99e4b56f3e1e66d2b5

    • SHA512

      8d665cbf861751de50a71e52c4d80baaaaaff15233ea1c4256d85b1d3842625d16287310dea09231b7c1b7915c2adf8e4df25c87a83a367b662b01263e1a2930

    • SSDEEP

      6144:dxEtjPOtioVjDGUU1qfDlavx+W2QnAWIsfKxxOJCSynWqqVP4qk9U6gKfBfUzYKN:QanWqGPdURh2FMCd

    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 Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks