Overview

overview

10

Static

static

550b51d2a0...ee.exe

windows7_x64

10

550b51d2a0...ee.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    550b51d2a09fb0f3de57d1a11327235fa3349f8ae3605b065b9e85b44c00bbee

  • Size

    3.3MB

  • Sample

    220310-v4mgxscefk

  • MD5

    6e582307cd30f4d9d3090ad09029a054

  • SHA1

    f3acdde16804c9034ed025ad78b3000375135ab7

  • SHA256

    550b51d2a09fb0f3de57d1a11327235fa3349f8ae3605b065b9e85b44c00bbee

  • SHA512

    c284503f042fed5d1f56042f803e0eb169d7a265ecda70112cc467bf47b879dab756230da0f9f202f0f8cd8841d3ecd49f59fcd2a6fea7cc3e8023e8a4dddd2d

Score
10/10
quasarsys32persistencespywarestealertrojanupx

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

      550b51d2a09fb0f3de57d1a11327235fa3349f8ae3605b065b9e85b44c00bbee

    • Size

      3.3MB

    • MD5

      6e582307cd30f4d9d3090ad09029a054

    • SHA1

      f3acdde16804c9034ed025ad78b3000375135ab7

    • SHA256

      550b51d2a09fb0f3de57d1a11327235fa3349f8ae3605b065b9e85b44c00bbee

    • SHA512

      c284503f042fed5d1f56042f803e0eb169d7a265ecda70112cc467bf47b879dab756230da0f9f202f0f8cd8841d3ecd49f59fcd2a6fea7cc3e8023e8a4dddd2d

    Score
    10/10
    quasarsys32persistencespywarestealertrojanupx

    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • 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

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Tasks