Overview

overview

10

Static

static

10

Ms-Teams2.exe

windows10-2004-x64

Sharing

Copy URL Twitter E-mail

General

  • Target
    Ms-Teams2.exe
  • Size 3.2MB
  • Sample260727-qwmeqsbc36
  • SHA256 757b6774a643142f91defa05e69038e6ba8dc4192c1a17974966c92d621a03bf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarhackeddefense_evasiondiscoveryexecutionpersistenceransomwarespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • HACKED

C2

  • 192.168.100.6:4782

  • 5.tcp.eu.ngrok.io:11798

  • 5.tcp.eu.ngrok.io:22452

Mutex

  • 5924b548-1f45-4295-8124-034a7f7d4467

Attributes
  • encryption_key

    8F68A372DE977CB35440B68B644B9D6C6C854371

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Ms-Teams2

  • subdirectory

    SubDir

Targets

    • Target
      Ms-Teams2.exe
    • Size 3.2MB
    • SHA256 757b6774a643142f91defa05e69038e6ba8dc4192c1a17974966c92d621a03bf
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    hackeddefense_evasiondiscoveryexecutionquasarpersistenceransomwarespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Modifies WinLogon for persistence

      persistence

    • Quasar payload

    • UAC bypass

      defense_evasiontrojan

    • Disables RegEdit via registry modification

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks whether UAC is enabled

      defense_evasiontrojan

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops desktop.ini file(s)

    • Modifies WinLogon

      persistence

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Winlogon Helper DLL

2
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Winlogon Helper DLL

2
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

5
T1112

Credential Access

Discovery

Browser Information Discovery

1
T1217

Query Registry

4
T1012

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Tasks