Overview

overview

10

Static

static

d9f5f1872c...6c.exe

windows7_x64

10

d9f5f1872c...6c.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    d9f5f1872cebecbcaa556c1d5371961731a7614fd141ba5040091a6e37b9346c

  • Size

    1.5MB

  • Sample

    220525-axcnxsdcc5

  • MD5

    f822f2ba51ac484e1e32cabfcf78e240

  • SHA1

    5388a244ef7be66d3fc8e58e54c9f44dfc2e6396

  • SHA256

    d9f5f1872cebecbcaa556c1d5371961731a7614fd141ba5040091a6e37b9346c

  • SHA512

    671108fcb2b89bc06430df1cdd2ffc95ab9340bd01d394ba1c026b84689e54dadf1ac659852270a14a49d6a22fa6ac8f3192264f51c1c5dd36bc7df9375ee87c

Score
10/10
quasaroffice01spywaresuricatatrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Office01

C2

174.139.46.13:4782

Mutex

QSR_MUTEX_mK2M7xovgh7rCUSa7M

Attributes
  • encryption_key

    0icGYPYyleDgljf1p7Zu

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Microsoft Store

  • subdirectory

    Windows

Targets

    • Target

      d9f5f1872cebecbcaa556c1d5371961731a7614fd141ba5040091a6e37b9346c

    • Size

      1.5MB

    • MD5

      f822f2ba51ac484e1e32cabfcf78e240

    • SHA1

      5388a244ef7be66d3fc8e58e54c9f44dfc2e6396

    • SHA256

      d9f5f1872cebecbcaa556c1d5371961731a7614fd141ba5040091a6e37b9346c

    • SHA512

      671108fcb2b89bc06430df1cdd2ffc95ab9340bd01d394ba1c026b84689e54dadf1ac659852270a14a49d6a22fa6ac8f3192264f51c1c5dd36bc7df9375ee87c

    Score
    10/10
    quasaroffice01spywaresuricatatrojan

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata: ET MALWARE Common RAT Connectivity Check Observed

      suricata

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Looks up external IP address via web service

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

    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

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks