Overview

overview

10

Static

static

3

a07573c22a...95.exe

windows7-x64

10

a07573c22a...95.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    a07573c22a19a40f9a01422a93bd1c125909857895e95.exe

  • Size

    2.7MB

  • Sample

    250122-mtys7ssmfv

  • MD5

    c462d6a698a68d09fd332986ab175aab

  • SHA1

    796cc4391791a9c135b32d3ae24c83b5f6f759d8

  • SHA256

    a07573c22a19a40f9a01422a93bd1c125909857895e9511d59949ba0e5ceb3fe

  • SHA512

    328dc1e5a620929de513ce5e496c905ace7856af3eb95f9619f0a5e4748f3375220a4327a0807dea30b94e2dc43983c5e5cc21fb45d8522c7dc18ed778a5ba9b

  • SSDEEP

    49152:UB8QdyqETGWTi91dhvdefW1qI8i5ZMFzp2XZXyoW5AJo:+l8GWWzdVdeu1q/iLMFcRyfAJo

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      a07573c22a19a40f9a01422a93bd1c125909857895e95.exe

    • Size

      2.7MB

    • MD5

      c462d6a698a68d09fd332986ab175aab

    • SHA1

      796cc4391791a9c135b32d3ae24c83b5f6f759d8

    • SHA256

      a07573c22a19a40f9a01422a93bd1c125909857895e9511d59949ba0e5ceb3fe

    • SHA512

      328dc1e5a620929de513ce5e496c905ace7856af3eb95f9619f0a5e4748f3375220a4327a0807dea30b94e2dc43983c5e5cc21fb45d8522c7dc18ed778a5ba9b

    • SSDEEP

      49152:UB8QdyqETGWTi91dhvdefW1qI8i5ZMFzp2XZXyoW5AJo:+l8GWWzdVdeu1q/iLMFcRyfAJo

    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.

    • 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

    • 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

    • 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

2
T1112

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

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks