Overview

overview

10

Static

static

10

Silent-Skull.exe

windows10-1703-x64

10

Silent-Skull.exe

windows10-2004-x64

10

Silent-Skull.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Silent-Skull.exe

  • Size

    348KB

  • Sample

    240603-vlttaaed28

  • MD5

    8436d16727f4b911f5480809103baa87

  • SHA1

    50a1b81af0bf85af5a3ef841fe49746675313120

  • SHA256

    2dec7d06740585afafca969de80238be1d58bdb8172d45b71b47f3fe9fc9e220

  • SHA512

    ae668799e2caca582c437271e7ee51c5d679a64a7dec26e4a31909bf948d6c9f0d467a2d39b625af8471267431adeec70b89513100690c6937aae21e1b6c521d

  • SSDEEP

    3072:9FxkhjvK3tFGW8jrQ+G/3NFZLZICSAr0EXZtiNLBPp64PFvqv5bnux7E3MpdMGTE:9LL3HRsM+OFZL2HL7CRbu+8gYdfDIui

Score
10/10
quasarclientspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Client

C2

runderscore00-61208.portmap.host:61208

Mutex

QSR_MUTEX_q1SPcFNLEQ1FIcq9Po

Attributes
  • encryption_key

    qQYEXzkyhZKvRSzcxALx

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Silent-Skull.exe

    • Size

      348KB

    • MD5

      8436d16727f4b911f5480809103baa87

    • SHA1

      50a1b81af0bf85af5a3ef841fe49746675313120

    • SHA256

      2dec7d06740585afafca969de80238be1d58bdb8172d45b71b47f3fe9fc9e220

    • SHA512

      ae668799e2caca582c437271e7ee51c5d679a64a7dec26e4a31909bf948d6c9f0d467a2d39b625af8471267431adeec70b89513100690c6937aae21e1b6c521d

    • SSDEEP

      3072:9FxkhjvK3tFGW8jrQ+G/3NFZLZICSAr0EXZtiNLBPp64PFvqv5bnux7E3MpdMGTE:9LL3HRsM+OFZL2HL7CRbu+8gYdfDIui

    Score
    10/10
    quasarclientspywaretrojan

    • 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.

    • Looks up external IP address via web service

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

    behavioral1behavioral2behavioral3

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks