Overview

overview

10

Static

static

10

3055d261f0...87.exe

windows7-x64

10

3055d261f0...87.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    3055d261f05a0656b1b92d9fa8ed3a72111a3a5c6d036d13d3d3a304ca99b987.exe

  • Size

    2.5MB

  • Sample

    241215-clxaas1mbs

  • MD5

    0bc68db77e687fa52b2f367994c5bc6f

  • SHA1

    ecf69c28aa53920f6279ad29d5bc9bb02542e841

  • SHA256

    3055d261f05a0656b1b92d9fa8ed3a72111a3a5c6d036d13d3d3a304ca99b987

  • SHA512

    fdb5c57a9a86961e895159543196c9b59c810827d82d7610ab8f9e220125f25c1867eae376c2f2aa1ae19b7899cd746dc18f6a56486cd4449766325a135421a1

  • SSDEEP

    49152:ubA3jUx4QdTmxnMJUh+pDY92IXc3Mx+HqXQJc2cv1TDlHz:ubVdPpDYbNiIP2cvxZHz

Score
10/10
dcratdiscoveryevasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      3055d261f05a0656b1b92d9fa8ed3a72111a3a5c6d036d13d3d3a304ca99b987.exe

    • Size

      2.5MB

    • MD5

      0bc68db77e687fa52b2f367994c5bc6f

    • SHA1

      ecf69c28aa53920f6279ad29d5bc9bb02542e841

    • SHA256

      3055d261f05a0656b1b92d9fa8ed3a72111a3a5c6d036d13d3d3a304ca99b987

    • SHA512

      fdb5c57a9a86961e895159543196c9b59c810827d82d7610ab8f9e220125f25c1867eae376c2f2aa1ae19b7899cd746dc18f6a56486cd4449766325a135421a1

    • SSDEEP

      49152:ubA3jUx4QdTmxnMJUh+pDY92IXc3Mx+HqXQJc2cv1TDlHz:ubVdPpDYbNiIP2cvxZHz

    Score
    10/10
    dcratdiscoveryevasioninfostealerpersistencerattrojan

    • 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.

    • UAC bypass

      evasiontrojan

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • 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

    • Checks whether UAC is enabled

      evasiontrojan
    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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

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

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Modify Registry

4
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks