Overview

overview

10

Static

static

10

cwel.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cwel.exe

  • Size

    3.1MB

  • Sample

    240629-w1czrawcrp

  • MD5

    f57c5f27d07315ed82dbb08b6e652c11

  • SHA1

    0c2411ec67b8f5457a36615f452091fa9fde834a

  • SHA256

    89fbe8fb43f3984f60bfedeae4cace3b4789351ab26ebbfba4c86a2b846ef2e9

  • SHA512

    a776ff65e4091531aa40534b0ab048be3552c45c1b7e684bcf8cbbd3c25df48e1c62ae50c91027db9a7e54dc9d87c084467f8feb84054ddeac18edb72bea2282

  • SSDEEP

    49152:DvLlL26AaNeWgPhlmVqvMQ7XSKXtmbmzJxoGdrXBLTHHB72eh2NT:DvxL26AaNeWgPhlmVqkQ7XSKXtmM

Score
10/10
quasaroffice04spywarestealertrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

pringelsy-48617.portmap.host:48617

Mutex

47a4883d-5fa4-4ba1-82ac-9e7264eb80ac

Attributes
  • encryption_key

    49AD8030FAA6FACCE440328D691DA1A8FD6FDA5C

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      cwel.exe

    • Size

      3.1MB

    • MD5

      f57c5f27d07315ed82dbb08b6e652c11

    • SHA1

      0c2411ec67b8f5457a36615f452091fa9fde834a

    • SHA256

      89fbe8fb43f3984f60bfedeae4cace3b4789351ab26ebbfba4c86a2b846ef2e9

    • SHA512

      a776ff65e4091531aa40534b0ab048be3552c45c1b7e684bcf8cbbd3c25df48e1c62ae50c91027db9a7e54dc9d87c084467f8feb84054ddeac18edb72bea2282

    • SSDEEP

      49152:DvLlL26AaNeWgPhlmVqvMQ7XSKXtmbmzJxoGdrXBLTHHB72eh2NT:DvxL26AaNeWgPhlmVqkQ7XSKXtmM

    Score
    10/10
    quasaroffice04spywarestealertrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer
    behavioral1

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

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

1
T1552.001

Credentials in Registry

1
T1552.002

Discovery

System Information Discovery

2
T1082

Query Registry

2
T1012

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks