General
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Target
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908
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Size
2.0MB
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Sample
241116-wlmkms1cpd
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MD5
38924c8184bf5944da2ac3e5cd987da2
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SHA1
1af0d4b729dd9c3a42c197a4ec961cab5722adda
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SHA256
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908
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SHA512
225e25eb08a1abe529a4fc5eb435eb800145a782e3dbdd6ba1c28925f84d758c18111ed181649bd222d50fd4a44f1ede7e43c630a58ae9a92fd2074d3d306a61
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SSDEEP
24576:FcBmS1nneRYZwoKBU7ArlQUCeYIxerW33/XfV6jx9aP5VR/z0WcBS4bppmHVSqyW:9S4/ST6xijxsBEmHVSqFHOHqnCgXu8
Static task
static1
Behavioral task
behavioral1
Sample
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908
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Size
2.0MB
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MD5
38924c8184bf5944da2ac3e5cd987da2
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SHA1
1af0d4b729dd9c3a42c197a4ec961cab5722adda
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SHA256
e767887e30b91919d5dc1dd2bf79ed277c2778363732e7c84f42f1f1808e5908
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SHA512
225e25eb08a1abe529a4fc5eb435eb800145a782e3dbdd6ba1c28925f84d758c18111ed181649bd222d50fd4a44f1ede7e43c630a58ae9a92fd2074d3d306a61
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SSDEEP
24576:FcBmS1nneRYZwoKBU7ArlQUCeYIxerW33/XfV6jx9aP5VR/z0WcBS4bppmHVSqyW:9S4/ST6xijxsBEmHVSqFHOHqnCgXu8
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DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
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Dcrat family
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Modifies WinLogon for persistence
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Process spawned unexpected child process
This typically indicates the parent process was compromised via an exploit or macro.
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DCRat payload
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1