Overview

overview

10

Static

static

3

dabaf8f6f0...3c.exe

windows7-x64

10

dabaf8f6f0...3c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    dabaf8f6f0a1c62aea91871b215fe93c.exe

  • Size

    524KB

  • Sample

    240701-h3sw4aygja

  • MD5

    dabaf8f6f0a1c62aea91871b215fe93c

  • SHA1

    7a1e1d9981e64379b6ad2517f3705180aa45c5c5

  • SHA256

    49d3a6363261b6915cf925e115234347ea4d4bb1bfe603a52a58d764eb266f87

  • SHA512

    d509c13f5b28ca1c2d1ec0e57f9d0bb0c31f08ede421f9b57f4a7cb08a782ebf97f4ef0f38e7b36c9747b3f607302a5b5d9ddc8a30d625e7e6f09dc2a5e24c6b

  • SSDEEP

    6144:RswAitwXUqtyzlKJCCzq1GzzjQ6NWiOhODiPw532k1c3u5WM+ix/WJpBvCIvyNVp:RJ4y5KJIMznOTPwtdIYbfSBvqN

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office04

C2

194.26.192.92:4782

xmarvel.ddns.net:4782
Mutex

1D5hAYqKMWDHFxCpFw

Attributes
  • encryption_key

    GqEm1Kfv49pa27CfDSc9

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      dabaf8f6f0a1c62aea91871b215fe93c.exe

    • Size

      524KB

    • MD5

      dabaf8f6f0a1c62aea91871b215fe93c

    • SHA1

      7a1e1d9981e64379b6ad2517f3705180aa45c5c5

    • SHA256

      49d3a6363261b6915cf925e115234347ea4d4bb1bfe603a52a58d764eb266f87

    • SHA512

      d509c13f5b28ca1c2d1ec0e57f9d0bb0c31f08ede421f9b57f4a7cb08a782ebf97f4ef0f38e7b36c9747b3f607302a5b5d9ddc8a30d625e7e6f09dc2a5e24c6b

    • SSDEEP

      6144:RswAitwXUqtyzlKJCCzq1GzzjQ6NWiOhODiPw532k1c3u5WM+ix/WJpBvCIvyNVp:RJ4y5KJIMznOTPwtdIYbfSBvqN

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks