Overview

overview

10

Static

static

3

f0f558d279...b6.exe

windows7-x64

10

f0f558d279...b6.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f0f558d279b1bc6708a1e95e8aa611c2824ee18be18e9676a236130d649e6db6.exe

  • Size

    1.8MB

  • Sample

    241218-fclc8atlfz

  • MD5

    d1c01e3ece918fce1cee14204b9a91af

  • SHA1

    888e49d8716e5d283c3a16a2cdaf37a9c09c098e

  • SHA256

    f0f558d279b1bc6708a1e95e8aa611c2824ee18be18e9676a236130d649e6db6

  • SHA512

    1263bad7fd1911d6689734477bd2b90b718d4496c69c1ef173e411443929d40317e798cdf1370446b7b6bd14d269ef8edbe197af4f2590f30fac45fdb0e8bd6e

  • SSDEEP

    49152:IBJTl4fxzc8TMk++HUwh42sDnaeQdbJU7Z:yj4hcEM54UG43naZs

Score
10/10
dcratdiscoveryexecutioninfostealerpersistenceratspywarestealer

Malware Config

Targets

    • Target

      f0f558d279b1bc6708a1e95e8aa611c2824ee18be18e9676a236130d649e6db6.exe

    • Size

      1.8MB

    • MD5

      d1c01e3ece918fce1cee14204b9a91af

    • SHA1

      888e49d8716e5d283c3a16a2cdaf37a9c09c098e

    • SHA256

      f0f558d279b1bc6708a1e95e8aa611c2824ee18be18e9676a236130d649e6db6

    • SHA512

      1263bad7fd1911d6689734477bd2b90b718d4496c69c1ef173e411443929d40317e798cdf1370446b7b6bd14d269ef8edbe197af4f2590f30fac45fdb0e8bd6e

    • SSDEEP

      49152:IBJTl4fxzc8TMk++HUwh42sDnaeQdbJU7Z: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