Overview

overview

10

Static

static

10

b0997cf70a...2N.exe

windows7-x64

10

b0997cf70a...2N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b0997cf70abbd1e112010f380df1a977ab85f38d6c410147fb65a5674b2f6be2N.exe

  • Size

    2.2MB

  • Sample

    250202-hcj69szmaw

  • MD5

    734f6915b07742d30bc125ff73f87d80

  • SHA1

    f5bbfbc8c5bd6ddb6329c3fca96261c787de0317

  • SHA256

    b0997cf70abbd1e112010f380df1a977ab85f38d6c410147fb65a5674b2f6be2

  • SHA512

    e9707ef0e75d94bea0c442cffde33aa74748b4c35471e45bab417dc5265f6ddb95e5d8edb55bf347a6a1d4881e50d85a75852f1acedf78a8892f44c708cee579

  • SSDEEP

    49152:ssSHlG56vO0T3/Nh/ptuw/C3TqGaDxr1NcWTMUvif:sLlK6d3/Nh/bV/Oq3Dxp2RUG

Score
10/10
dcratdefense_evasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      b0997cf70abbd1e112010f380df1a977ab85f38d6c410147fb65a5674b2f6be2N.exe

    • Size

      2.2MB

    • MD5

      734f6915b07742d30bc125ff73f87d80

    • SHA1

      f5bbfbc8c5bd6ddb6329c3fca96261c787de0317

    • SHA256

      b0997cf70abbd1e112010f380df1a977ab85f38d6c410147fb65a5674b2f6be2

    • SHA512

      e9707ef0e75d94bea0c442cffde33aa74748b4c35471e45bab417dc5265f6ddb95e5d8edb55bf347a6a1d4881e50d85a75852f1acedf78a8892f44c708cee579

    • SSDEEP

      49152:ssSHlG56vO0T3/Nh/ptuw/C3TqGaDxr1NcWTMUvif:sLlK6d3/Nh/bV/Oq3Dxp2RUG

    Score
    10/10
    dcratdefense_evasioninfostealerpersistencerattrojan

    • 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

      defense_evasiontrojan

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

      rat

    • Drops file in Drivers directory

    • 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

      defense_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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks