General
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Target
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469.exe
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Size
1.9MB
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Sample
241119-fwwcja1fqn
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MD5
2d756772bc00e5778d794c107358ddf7
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SHA1
77229fc9ceeb137c6644a4fa3085aecabaf94ec3
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SHA256
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469
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SHA512
31fae1a50618ed221cef3bfc72a017e8e925c3aa2bac727040ee655d9dff567813e91d76fecda0478653d50b8061481447ded77939b94e1ec823c3419b68c783
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SSDEEP
24576:S1cKuEoW9iN0TvOJcaCXMgg2Suqp6Nheem6Vuuean7WiOLYGhYJG9oQpyhctpnWq:wb24KbkglgVMm9OAG9oMgctpnW5yI4
Static task
static1
Behavioral task
behavioral1
Sample
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469.exe
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Size
1.9MB
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MD5
2d756772bc00e5778d794c107358ddf7
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SHA1
77229fc9ceeb137c6644a4fa3085aecabaf94ec3
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SHA256
a7f4c48301ad6b01c8777427eaceb965a9e0c14d493f44d1dea4f8d498123469
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SHA512
31fae1a50618ed221cef3bfc72a017e8e925c3aa2bac727040ee655d9dff567813e91d76fecda0478653d50b8061481447ded77939b94e1ec823c3419b68c783
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SSDEEP
24576:S1cKuEoW9iN0TvOJcaCXMgg2Suqp6Nheem6Vuuean7WiOLYGhYJG9oQpyhctpnWq:wb24KbkglgVMm9OAG9oMgctpnW5yI4
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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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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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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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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
1Defense Evasion
Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1