Overview

overview

10

Static

static

10

211cd98e00...bc.exe

windows7-x64

10

211cd98e00...bc.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    211cd98e00387b71c9a8c75649ce6c3ec1c595964abede78960d5d9f233b06bc

  • Size

    431KB

  • Sample

    250222-zgtd6szqw6

  • MD5

    cb593528c628b13296746bfd449ab801

  • SHA1

    a7de38df3678915f2df0f741dea35a55434c4a26

  • SHA256

    211cd98e00387b71c9a8c75649ce6c3ec1c595964abede78960d5d9f233b06bc

  • SHA512

    8f584d9ddf9cf0aeb3cf668f0b82416ce09f73f1fa41711fcdac2c9ad7e79f0661983f7e92c61b06bbb0fd1330ececa065278b4735853d0b323aba663b3497fa

  • SSDEEP

    6144:BI6bPXhLApfpKcjF36bbGXUM1dz0i205u4S26uI:WmhApnFKKt0i205Yz

Score
10/10
quasartestdiscoverypersistencespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Test

C2

10.0.2.2:4782:4782

Mutex

QSR_MUTEX_uLG4ZRVYEfBangYb5F

Attributes
  • encryption_key

    mcNXfsvLp0Hjh0KA2uyx

  • install_name

    Javaupdater.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Java Updater

  • subdirectory

    JavaUpdater

Targets

    • Target

      211cd98e00387b71c9a8c75649ce6c3ec1c595964abede78960d5d9f233b06bc

    • Size

      431KB

    • MD5

      cb593528c628b13296746bfd449ab801

    • SHA1

      a7de38df3678915f2df0f741dea35a55434c4a26

    • SHA256

      211cd98e00387b71c9a8c75649ce6c3ec1c595964abede78960d5d9f233b06bc

    • SHA512

      8f584d9ddf9cf0aeb3cf668f0b82416ce09f73f1fa41711fcdac2c9ad7e79f0661983f7e92c61b06bbb0fd1330ececa065278b4735853d0b323aba663b3497fa

    • SSDEEP

      6144:BI6bPXhLApfpKcjF36bbGXUM1dz0i205u4S26uI:WmhApnFKKt0i205Yz

    Score
    10/10
    quasartestdiscoveryspywaretrojanpersistence

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • 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 Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks