Overview

overview

10

Static

static

10

4b1967b040...05.exe

windows7-x64

10

4b1967b040...05.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe

  • Size

    855KB

  • Sample

    241104-csbl6s1cmd

  • MD5

    5780dbae6ac61a88c8d89f216f324146

  • SHA1

    cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc

  • SHA256

    4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605

  • SHA512

    8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920

  • SSDEEP

    12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66

Score
10/10
dcratdiscoveryinfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe

    • Size

      855KB

    • MD5

      5780dbae6ac61a88c8d89f216f324146

    • SHA1

      cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc

    • SHA256

      4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605

    • SHA512

      8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920

    • SSDEEP

      12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66

    Score
    10/10
    dcratinfostealerpersistenceratspywarestealerdiscovery

    • 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

    • 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

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

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