Overview

overview

10

Static

static

3

af4b66ff9b...e4.exe

windows7-x64

10

af4b66ff9b...e4.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    af4b66ff9b1f5830080860380efa81e4.exe

  • Size

    7.0MB

  • Sample

    250126-qtmbystpal

  • MD5

    af4b66ff9b1f5830080860380efa81e4

  • SHA1

    53cc9bb12117af3f77354733abc4ef48ad339932

  • SHA256

    429a6c2aa2f62fe5b656de97dd25152cd8e653d92a8dd5e75d067308b784bfaf

  • SHA512

    8796e8f5cd290dc5cbf009a886796b61d7137630c89067450d863596cd9296eed846ffd5cd53e6750a5c52ba2741f95e3d8169c010ec307371c304a056acf431

  • SSDEEP

    196608:M3NyJWZ3HC5ObjKh7+mSGZ5gPZaQC4b5DV2h:MdOWZyCUpt8b9Vy

Score
10/10
dcratdefense_evasiondiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      af4b66ff9b1f5830080860380efa81e4.exe

    • Size

      7.0MB

    • MD5

      af4b66ff9b1f5830080860380efa81e4

    • SHA1

      53cc9bb12117af3f77354733abc4ef48ad339932

    • SHA256

      429a6c2aa2f62fe5b656de97dd25152cd8e653d92a8dd5e75d067308b784bfaf

    • SHA512

      8796e8f5cd290dc5cbf009a886796b61d7137630c89067450d863596cd9296eed846ffd5cd53e6750a5c52ba2741f95e3d8169c010ec307371c304a056acf431

    • SSDEEP

      196608:M3NyJWZ3HC5ObjKh7+mSGZ5gPZaQC4b5DV2h:MdOWZyCUpt8b9Vy

    Score
    10/10
    dcratdefense_evasiondiscoveryexecutioninfostealerpersistenceratspywarestealer

    • 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.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Command and Scripting Interpreter: PowerShell

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

      execution

    • Stops running service(s)

      defense_evasionexecution

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

      defense_evasion

    • 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

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    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

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Power Settings

1
T1653

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

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

1
T1562

Indicator Removal

1
T1070

Clear Windows Event Logs

1
T1070.001

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

Query Registry

5
T1012

System Information Discovery

5
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Service Stop

1
T1489

Tasks