Overview

overview

10

Static

static

10

1054af5e92...b5.exe

windows7-x64

10

1054af5e92...b5.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe

  • Size

    829KB

  • Sample

    250114-cjzyeawlfn

  • MD5

    c1f1bea182f1c3477c2f133c3ac26930

  • SHA1

    2145c09d2c3279ac83e844c4d80e7aa219e99b8d

  • SHA256

    1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5

  • SHA512

    6af6336782b29bdab906e4d289cb5c2c8500ba8a20dee53def21960e62afc28ec6756b746b4e4036a30726984a60b656b3d529b4abc119953267e91be4992a4d

  • SSDEEP

    12288:P6TnOzi5kaag8hpT77JJMA+XSpW3Ari4VVyZC0+1cw2jINof7+vEnkdsOZ6:P6TnYa+T7dJMA+i3iE0nHfW6

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5.exe

    • Size

      829KB

    • MD5

      c1f1bea182f1c3477c2f133c3ac26930

    • SHA1

      2145c09d2c3279ac83e844c4d80e7aa219e99b8d

    • SHA256

      1054af5e9206aa0cb650a4e58900bcd369a554e64eaa89f56cb35cd105386eb5

    • SHA512

      6af6336782b29bdab906e4d289cb5c2c8500ba8a20dee53def21960e62afc28ec6756b746b4e4036a30726984a60b656b3d529b4abc119953267e91be4992a4d

    • SSDEEP

      12288:P6TnOzi5kaag8hpT77JJMA+XSpW3Ari4VVyZC0+1cw2jINof7+vEnkdsOZ6:P6TnYa+T7dJMA+i3iE0nHfW6

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Dcrat family

      dcrat

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • DCRat payload

      rat

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks