Overview

overview

10

Static

static

10

321107b1a9...b3.exe

windows7-x64

10

321107b1a9...b3.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    321107b1a9dc78b8423ea89958b0d7fb31866f74b3ff1c42c0b4884246a6dfb3

  • Size

    952KB

  • Sample

    250127-zyqplswlhm

  • MD5

    67bc5be56b004a9b0b0e0f4cf3943591

  • SHA1

    ac567e17856fd4b06290d6383472b15b93175cc1

  • SHA256

    321107b1a9dc78b8423ea89958b0d7fb31866f74b3ff1c42c0b4884246a6dfb3

  • SHA512

    0c0699650cbd2d9ecbb8d607df7deef51078a7bd8fa31e28fe86a16dbfc3c72322ca16f8109b33f0c7d84878b37e6dcc49be9320a2281883cef8c43c361dec2a

  • SSDEEP

    24576:2+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX:R8/KfRTK

Score
10/10
dcratdefense_evasioninfostealerpersistencerattrojan

Malware Config

Targets

    • Target

      321107b1a9dc78b8423ea89958b0d7fb31866f74b3ff1c42c0b4884246a6dfb3

    • Size

      952KB

    • MD5

      67bc5be56b004a9b0b0e0f4cf3943591

    • SHA1

      ac567e17856fd4b06290d6383472b15b93175cc1

    • SHA256

      321107b1a9dc78b8423ea89958b0d7fb31866f74b3ff1c42c0b4884246a6dfb3

    • SHA512

      0c0699650cbd2d9ecbb8d607df7deef51078a7bd8fa31e28fe86a16dbfc3c72322ca16f8109b33f0c7d84878b37e6dcc49be9320a2281883cef8c43c361dec2a

    • SSDEEP

      24576:2+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX:R8/KfRTK

    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