Overview

overview

10

Static

static

10

cfd7fa8f25...21.exe

windows7-x64

10

cfd7fa8f25...21.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cfd7fa8f2578198fa2aab263ae3087774a557a065f3e36c0a05be900a062b221.exe

  • Size

    331KB

  • Sample

    250118-flnvpsvjdk

  • MD5

    25e4b3153f2e61b139aaa9df1b2f8b12

  • SHA1

    23c38b69b037670cafd48cf285cf88f41c7c854c

  • SHA256

    cfd7fa8f2578198fa2aab263ae3087774a557a065f3e36c0a05be900a062b221

  • SHA512

    b0c7090f25d63e7277e25d396db6636135a72c863f98bf24b23ab16ed547c593cf4ed19c6ebd969395cee205741ca7d5f9dffbe3ed770cbad016f33cb2f9d46e

  • SSDEEP

    6144:FQAEfkGPHFi1zron6+s78g8mTXJgQ8EZbST8FQeLg5tIk:6/Fi1zro6+swHOEx8FQeLSq

Score
10/10
quasardefense_evasionevasionexecutionimpactpersistenceransomwarespywaretrojan

Malware Config

Targets

    • Target

      cfd7fa8f2578198fa2aab263ae3087774a557a065f3e36c0a05be900a062b221.exe

    • Size

      331KB

    • MD5

      25e4b3153f2e61b139aaa9df1b2f8b12

    • SHA1

      23c38b69b037670cafd48cf285cf88f41c7c854c

    • SHA256

      cfd7fa8f2578198fa2aab263ae3087774a557a065f3e36c0a05be900a062b221

    • SHA512

      b0c7090f25d63e7277e25d396db6636135a72c863f98bf24b23ab16ed547c593cf4ed19c6ebd969395cee205741ca7d5f9dffbe3ed770cbad016f33cb2f9d46e

    • SSDEEP

      6144:FQAEfkGPHFi1zron6+s78g8mTXJgQ8EZbST8FQeLg5tIk:6/Fi1zro6+swHOEx8FQeLSq

    Score
    10/10
    quasardefense_evasionevasionexecutionimpactpersistenceransomwarespywaretrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Modifies security service

      evasion

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • UAC bypass

      evasiontrojan

    • Windows security bypass

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Executes dropped EXE

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • 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.

    • Modifies Security services

      Modifies the startup behavior of a security service.

      defense_evasion
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Direct Volume Access

1
T1006

Impair Defenses

5
T1562

Disable or Modify Tools

4
T1562.001

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

8
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Inhibit System Recovery

2
T1490

Tasks