General
- Target DCRatBuild.exe
- Size 1.1MB
- Sample260806-x5b4payglc
- SHA256 3bfabec207aec07e0ee154e8d0047c69c52801a5b3fb6a05f8d2fe3102c25a7b
- MD5 12ed381be0d18aa7230d08e78f42a3dc
- SHA1 677c6a6fa61ac565be4ad75a2f9a5715d02d29f1
- SHA512 fecc9a371af6b09aaf7d9b55a655f8e35e163b7d24c97b79d16b3e25d7e55d2a7552ca5ed73c9f059e792884e4f885394805e06663a5184568866782be8b676c
- SSDEEP 24576:U2G/nvxW3Ww0tss8io0rcH7ctOCp8No7w1knQ:UbA30ss8sa5HNzj
- TLSH T12C354A027E44CE21F0191633C2EF494847B4AD502BA6E72B7EBA376D55123937D1CAEB
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
DCRatBuild.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
DCRatBuild.exe
Resource
win11ltsc2024-20260709-en
Malware Config
Targets
-
- Target DCRatBuild.exe
- Size 1.1MB
- SHA256 3bfabec207aec07e0ee154e8d0047c69c52801a5b3fb6a05f8d2fe3102c25a7b
- MD5 12ed381be0d18aa7230d08e78f42a3dc
- SHA1 677c6a6fa61ac565be4ad75a2f9a5715d02d29f1
- SHA512 fecc9a371af6b09aaf7d9b55a655f8e35e163b7d24c97b79d16b3e25d7e55d2a7552ca5ed73c9f059e792884e4f885394805e06663a5184568866782be8b676c
- SSDEEP 24576:U2G/nvxW3Ww0tss8io0rcH7ctOCp8No7w1knQ:UbA30ss8sa5HNzj
- TLSH T12C354A027E44CE21F0191633C2EF494847B4AD502BA6E72B7EBA376D55123937D1CAEB
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Family: DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
-
Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
-
Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Executes dropped EXE
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Executes a VBScript file via the Windows Script Host.
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1