Overview

overview

10

Static

static

3

cb4626ad92...0b.exe

windows7-x64

10

cb4626ad92...0b.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b.exe

  • Size

    1.5MB

  • Sample

    241211-d13ajavjft

  • MD5

    6689bd9a5c795eedc631e5fbb850b7ff

  • SHA1

    b63d8e25d4eb9abea3ed0f7867f70db2ab18cba2

  • SHA256

    cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b

  • SHA512

    ff51ccd8918344bb0439a4d9e39394383bff2196496d778db9a3d2862479e55f1bf59c7d467ff055c721231cb592c3c7ded63c5af28a3f9552dc6421dd1151bf

  • SSDEEP

    24576:K17t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWg:KBt7R0wJ4L5Uw5lCCyG31oIPmg

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b.exe

    • Size

      1.5MB

    • MD5

      6689bd9a5c795eedc631e5fbb850b7ff

    • SHA1

      b63d8e25d4eb9abea3ed0f7867f70db2ab18cba2

    • SHA256

      cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b

    • SHA512

      ff51ccd8918344bb0439a4d9e39394383bff2196496d778db9a3d2862479e55f1bf59c7d467ff055c721231cb592c3c7ded63c5af28a3f9552dc6421dd1151bf

    • SSDEEP

      24576:K17t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWg:KBt7R0wJ4L5Uw5lCCyG31oIPmg

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistencerat

    • 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

    • 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

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

Command and Control

Exfiltration

Impact

Tasks