Overview

overview

10

Static

static

3

7f5d83a4f3...55.exe

windows7-x64

10

7f5d83a4f3...55.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    7f5d83a4f3158f5bbb7b556ba3db62dce18162187a54d33ed2355af2060a9f55

  • Size

    1.8MB

  • Sample

    250203-bg1w9avjet

  • MD5

    6bbb637f1077277a20b3507dc97bc7de

  • SHA1

    68fcbdf3a03ed5d3b20be5ccb5ba722287e132c0

  • SHA256

    7f5d83a4f3158f5bbb7b556ba3db62dce18162187a54d33ed2355af2060a9f55

  • SHA512

    fcf70736e50c933cb1fde526648483c34a8037ec381bf1dadb8645040b0ed45739b20b3085f468c496f278ecfc19b634e5ed09fb06728f8487655965c6e08ef3

  • SSDEEP

    24576:9nKomQbHAScRsd289QkfU9aEENG3xnt7w0sprTOx/vIwtU7nGYpm1CIV:xusQaD89KGhnt0FprTuGn

Score
10/10
dcratdiscoveryinfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      7f5d83a4f3158f5bbb7b556ba3db62dce18162187a54d33ed2355af2060a9f55

    • Size

      1.8MB

    • MD5

      6bbb637f1077277a20b3507dc97bc7de

    • SHA1

      68fcbdf3a03ed5d3b20be5ccb5ba722287e132c0

    • SHA256

      7f5d83a4f3158f5bbb7b556ba3db62dce18162187a54d33ed2355af2060a9f55

    • SHA512

      fcf70736e50c933cb1fde526648483c34a8037ec381bf1dadb8645040b0ed45739b20b3085f468c496f278ecfc19b634e5ed09fb06728f8487655965c6e08ef3

    • SSDEEP

      24576:9nKomQbHAScRsd289QkfU9aEENG3xnt7w0sprTOx/vIwtU7nGYpm1CIV:xusQaD89KGhnt0FprTuGn

    Score
    10/10
    dcratdiscoveryinfostealerpersistenceratspywarestealer

    • 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.

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

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

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

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

Browser Information Discovery

1
T1217

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks