Overview

overview

10

Static

static

10

7a735fb7f6...ed.exe

windows7-x64

10

7a735fb7f6...ed.exe

windows10-2004-x64

10

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General

  • Target

    7a735fb7f6e21b8f02009613d40272571de48bb6511509326e65f44aec6b19ed.exe

  • Size

    952KB

  • Sample

    241212-xkkkbsvrdm

  • MD5

    74ffc0f02c115af7ca2a9e63280ee91a

  • SHA1

    cbc921ebe0671922b3495aead9c23c9d8305baba

  • SHA256

    7a735fb7f6e21b8f02009613d40272571de48bb6511509326e65f44aec6b19ed

  • SHA512

    e9a2453c1a3c897a94a0cb817c12dbda52c175a709704614cda8497ce95dd6f137d394d3e6c0136f73819b05c1248649b4a1fc147c90dbe0bdc25d12b1fa5179

  • SSDEEP

    24576:e+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXX:Z8/KfRTKt

Score
10/10
dcratevasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      7a735fb7f6e21b8f02009613d40272571de48bb6511509326e65f44aec6b19ed.exe

    • Size

      952KB

    • MD5

      74ffc0f02c115af7ca2a9e63280ee91a

    • SHA1

      cbc921ebe0671922b3495aead9c23c9d8305baba

    • SHA256

      7a735fb7f6e21b8f02009613d40272571de48bb6511509326e65f44aec6b19ed

    • SHA512

      e9a2453c1a3c897a94a0cb817c12dbda52c175a709704614cda8497ce95dd6f137d394d3e6c0136f73819b05c1248649b4a1fc147c90dbe0bdc25d12b1fa5179

    • SSDEEP

      24576:e+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXX:Z8/KfRTKt

    Score
    10/10
    dcratevasioninfostealerpersistencerattrojan

    • 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

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Drops file in System32 directory

    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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks