Overview

overview

10

Static

static

39b139c752...bf.exe

windows7_x64

10

39b139c752...bf.exe

windows10_x64

10

Sharing

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General

  • Target

    39b139c752dbd05daa85f6183620febf

  • Size

    3.3MB

  • Sample

    210709-m4fbrzbksa

  • MD5

    39b139c752dbd05daa85f6183620febf

  • SHA1

    99fbb8be7f270400b4c49c943758f90f94a65ef5

  • SHA256

    b43995d648b6e64824da5749a407029eae9feb84787266a4dae33f4c412ec661

  • SHA512

    3c5bcb79740f6a146768452279378cabeb267abca15a9b75d04917a4b794a8d70e81b65ab73e6307f83515fac1433fa7426de2a5ccc2db42ec1cffd4d881dc00

Score
10/10
quasarsys32spywarestealertrojanupx

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Sys32

C2

184.105.238.80:4782

Mutex

QSR_MUTEX_IBj5UlCqsXE96x1jgF

Attributes
  • encryption_key

    mZfAUjkKkw53M41DGa6d

  • install_name

    System32.exe

  • log_directory

    Sys32Logs

  • reconnect_delay

    3000

  • startup_key

    System32

  • subdirectory

    SubDir

Targets

    • Target

      39b139c752dbd05daa85f6183620febf

    • Size

      3.3MB

    • MD5

      39b139c752dbd05daa85f6183620febf

    • SHA1

      99fbb8be7f270400b4c49c943758f90f94a65ef5

    • SHA256

      b43995d648b6e64824da5749a407029eae9feb84787266a4dae33f4c412ec661

    • SHA512

      3c5bcb79740f6a146768452279378cabeb267abca15a9b75d04917a4b794a8d70e81b65ab73e6307f83515fac1433fa7426de2a5ccc2db42ec1cffd4d881dc00

    Score
    10/10
    quasarsys32spywarestealertrojanupx

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Looks up external IP address via web service

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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Tasks