Overview

overview

10

Static

static

3

amssolutio...er.exe

windows7-x64

10

amssolutio...er.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    amssolution_loader.exe

  • Size

    17.8MB

  • Sample

    240705-tacvystdjh

  • MD5

    5f877b6367f6c9e6ecf5ff48fc28f92a

  • SHA1

    1fbb2c74c39961bc7aaa97dd0f5c56e60424e25d

  • SHA256

    dae6085b01de937e45c1a6b7539f96dd265714a918d057d6191c2d0e5bfc0562

  • SHA512

    d682b3cc4653420459f0beece69313a86c475de221bec9fa4e53ebc78ed62b2dd6415331a45b89b0160befe9611ff30f3ab1ad2425ffba442aef826f6101cbc6

  • SSDEEP

    393216:3wAhxPil39Sb8+svZo/eWNxmw6g+TQPX4YvuKSeHXSmuqDy:gAhVzoWjegeQvbVBkq

Score
10/10
quasarstarlightspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

starlight

C2

miracle123-32034.portmap.host:32034

Mutex

8218dcfc-23c2-4979-aca8-0aacd1a85069

Attributes
  • encryption_key

    BD3B0547D453134B6F8E5F35E031ADE13CE9DEF6

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    NVIDIA GAMESTREAM SERVER

  • subdirectory

    SubDir

Targets

    • Target

      amssolution_loader.exe

    • Size

      17.8MB

    • MD5

      5f877b6367f6c9e6ecf5ff48fc28f92a

    • SHA1

      1fbb2c74c39961bc7aaa97dd0f5c56e60424e25d

    • SHA256

      dae6085b01de937e45c1a6b7539f96dd265714a918d057d6191c2d0e5bfc0562

    • SHA512

      d682b3cc4653420459f0beece69313a86c475de221bec9fa4e53ebc78ed62b2dd6415331a45b89b0160befe9611ff30f3ab1ad2425ffba442aef826f6101cbc6

    • SSDEEP

      393216:3wAhxPil39Sb8+svZo/eWNxmw6g+TQPX4YvuKSeHXSmuqDy:gAhVzoWjegeQvbVBkq

    Score
    10/10
    quasarstarlightspywaretrojan

    • 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

    • Loads dropped DLL

    • 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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks