Overview

overview

10

Static

static

10

4d68ce6104...cd.exe

windows7-x64

10

4d68ce6104...cd.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    4d68ce61047c125e3537ec992fd0a6a156bf64f21aa1c55c909aedf5871fe2cd.exe

  • Size

    952KB

  • Sample

    250125-jgyqwsspaz

  • MD5

    0ebb2d19c8a22a1a31f2088164233d7c

  • SHA1

    ba880d1df17a566198ed16f91ae16126c9103a40

  • SHA256

    4d68ce61047c125e3537ec992fd0a6a156bf64f21aa1c55c909aedf5871fe2cd

  • SHA512

    373f71389e03747a73ef5d02ba998cea4f60eb718af44bce83def2395c1fbcaf99bacf78b9fc79eea9c24018a81864a17cfb81bbe8462d8eb9e6b4874b56fdb5

  • SSDEEP

    24576:2+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXu:R8/KfRTKM

Score
10/10
dcratdefense_evasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      4d68ce61047c125e3537ec992fd0a6a156bf64f21aa1c55c909aedf5871fe2cd.exe

    • Size

      952KB

    • MD5

      0ebb2d19c8a22a1a31f2088164233d7c

    • SHA1

      ba880d1df17a566198ed16f91ae16126c9103a40

    • SHA256

      4d68ce61047c125e3537ec992fd0a6a156bf64f21aa1c55c909aedf5871fe2cd

    • SHA512

      373f71389e03747a73ef5d02ba998cea4f60eb718af44bce83def2395c1fbcaf99bacf78b9fc79eea9c24018a81864a17cfb81bbe8462d8eb9e6b4874b56fdb5

    • SSDEEP

      24576:2+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXXu:R8/KfRTKM

    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

    • 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

    • 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