Overview

overview

10

Static

static

3

aedfa77790...9N.exe

windows7-x64

10

aedfa77790...9N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    aedfa77790fe7a60cffddc7dfd4afa0f6fdb858965df2850ce418b4428d92a99N.exe

  • Size

    1.8MB

  • Sample

    241217-1gxl9symf1

  • MD5

    5c218a3293314b8e13e89212d24e7da0

  • SHA1

    9ff5c504f253730e1d6a15ca1c655c3882ecfbae

  • SHA256

    aedfa77790fe7a60cffddc7dfd4afa0f6fdb858965df2850ce418b4428d92a99

  • SHA512

    4985f19581a8fc670dde876199a1603fcb1ece427b8c0544b9cf369568fc81ee81a4e2f1a3cbf7160b87a8590917b9b4c8dc8268c5d3ce988c3a251ece047f44

  • SSDEEP

    49152:IBJTl4fxzc8TMk++HUwh42sDnaeQdbJU7h:yj4hcEM54UG43naZs

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      aedfa77790fe7a60cffddc7dfd4afa0f6fdb858965df2850ce418b4428d92a99N.exe

    • Size

      1.8MB

    • MD5

      5c218a3293314b8e13e89212d24e7da0

    • SHA1

      9ff5c504f253730e1d6a15ca1c655c3882ecfbae

    • SHA256

      aedfa77790fe7a60cffddc7dfd4afa0f6fdb858965df2850ce418b4428d92a99

    • SHA512

      4985f19581a8fc670dde876199a1603fcb1ece427b8c0544b9cf369568fc81ee81a4e2f1a3cbf7160b87a8590917b9b4c8dc8268c5d3ce988c3a251ece047f44

    • SSDEEP

      49152:IBJTl4fxzc8TMk++HUwh42sDnaeQdbJU7h:yj4hcEM54UG43naZs

    Score
    10/10
    dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

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

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

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks