Overview

overview

10

Static

static

3

e6799f5c6d...4N.exe

windows7-x64

10

e6799f5c6d...4N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e6799f5c6d46b85d714bbc3d2a36ebf9a2dbd9d83026ba6244c9c31ba741f954N

  • Size

    2.2MB

  • Sample

    241108-dsh7patkav

  • MD5

    811005c699096acecde84aeea48d9890

  • SHA1

    077c2a11dde5d10e7a8a8f391066430725c40a8d

  • SHA256

    e6799f5c6d46b85d714bbc3d2a36ebf9a2dbd9d83026ba6244c9c31ba741f954

  • SHA512

    68a4ac32adee2769fdd34e2c94905763cae902dac876b858d08adcd9a4db2534fd326eabbd0ef3c96ed5b5c5bc2f3a9a95081c258ec90fe75948d3f2f52f22ce

  • SSDEEP

    49152:PBlOTclcGVNEBuUSDgrP+7m+Ej7rTXEjEmr:Z4TclcwED+7m+Afmr

Score
10/10
dcratdiscoveryexecutioninfostealerpersistencerat

Malware Config

Targets

    • Target

      e6799f5c6d46b85d714bbc3d2a36ebf9a2dbd9d83026ba6244c9c31ba741f954N

    • Size

      2.2MB

    • MD5

      811005c699096acecde84aeea48d9890

    • SHA1

      077c2a11dde5d10e7a8a8f391066430725c40a8d

    • SHA256

      e6799f5c6d46b85d714bbc3d2a36ebf9a2dbd9d83026ba6244c9c31ba741f954

    • SHA512

      68a4ac32adee2769fdd34e2c94905763cae902dac876b858d08adcd9a4db2534fd326eabbd0ef3c96ed5b5c5bc2f3a9a95081c258ec90fe75948d3f2f52f22ce

    • SSDEEP

      49152:PBlOTclcGVNEBuUSDgrP+7m+Ej7rTXEjEmr:Z4TclcwED+7m+Afmr

    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

    • Loads dropped DLL

    • 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

Discovery

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks