Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240702-b48klssajb

  • MD5

    e55e15bea243fd9bba10a445fa3441ae

  • SHA1

    4d2f04eb3cd2169652ae28ea02db2aaa8ee1123a

  • SHA256

    72d2aedd7b7d74faee7b632bc3cbbd8c0c3be4f9ffb61601c7a779e5a7f1052e

  • SHA512

    18ac9230fc33a8fa18e0270cf6ea6f68f034dfe15d97a6ac7fc59591f8c7ff05e2014d843ca8c8d0e20345219b491a862dd7900cdf44466cff4f4f862d69c6c2

  • SSDEEP

    49152:yvOI22SsaNYfdPBldt698dBcjHqkFAfdRoGd7MTHHB72eh2NT:yvj22SsaNYfdPBldt6+dBcjHqFff

Score
10/10
quasarsolaraspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Solara

C2

DESKTOP-JVK5CI7:4782

Mutex

39c5c45c-62a0-4623-a904-5cbad2aa6b55

Attributes
  • encryption_key

    41AD0502F025DD3F47720DC4BDEED540F3EAFD12

  • install_name

    securekerneI.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Update

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      e55e15bea243fd9bba10a445fa3441ae

    • SHA1

      4d2f04eb3cd2169652ae28ea02db2aaa8ee1123a

    • SHA256

      72d2aedd7b7d74faee7b632bc3cbbd8c0c3be4f9ffb61601c7a779e5a7f1052e

    • SHA512

      18ac9230fc33a8fa18e0270cf6ea6f68f034dfe15d97a6ac7fc59591f8c7ff05e2014d843ca8c8d0e20345219b491a862dd7900cdf44466cff4f4f862d69c6c2

    • SSDEEP

      49152:yvOI22SsaNYfdPBldt698dBcjHqkFAfdRoGd7MTHHB72eh2NT:yvj22SsaNYfdPBldt6+dBcjHqFff

    Score
    10/10
    quasarsolaraspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks