General
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Target
.
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Size
147KB
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Sample
240503-v17zfsbg8x
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MD5
d219b446886f1e5a1d0c9ee281c73b15
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SHA1
48f9195b2d7984b8d8e455d095ed7e2006ae6ece
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SHA256
fbef789544ba4986748932d1215b46e792f800d7e3c461e296a4cd967a9f4c10
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SHA512
174dce07a240f949e67d00a0984b10262e35e5c7d17dca9aa1dfd3c7d666009d290f0b248960a8f8fc3ebffa8328e48d36d423c4969eb25a1e985f9573c24147
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SSDEEP
1536:opkud8LonVJoqYarK4DsYNgRyypRMPuNPV5nPztP4FPfaParP8R4DJ2PWTllU0ru:KkPL6WVMllhAY9HhqiS
Static task
static1
Behavioral task
behavioral1
Sample
.html
Resource
win11-20240419-en
Malware Config
Extracted
crimsonrat
185.136.161.124
Targets
-
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Target
.
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Size
147KB
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MD5
d219b446886f1e5a1d0c9ee281c73b15
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SHA1
48f9195b2d7984b8d8e455d095ed7e2006ae6ece
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SHA256
fbef789544ba4986748932d1215b46e792f800d7e3c461e296a4cd967a9f4c10
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SHA512
174dce07a240f949e67d00a0984b10262e35e5c7d17dca9aa1dfd3c7d666009d290f0b248960a8f8fc3ebffa8328e48d36d423c4969eb25a1e985f9573c24147
-
SSDEEP
1536:opkud8LonVJoqYarK4DsYNgRyypRMPuNPV5nPztP4FPfaParP8R4DJ2PWTllU0ru:KkPL6WVMllhAY9HhqiS
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CrimsonRAT main payload
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Suspicious use of NtCreateUserProcessOtherParentProcess
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies RDP port number used by Windows
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Modifies Windows Firewall
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Executes dropped EXE
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Loads dropped DLL
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Registers COM server for autorun
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Indicator Removal
2File Deletion
2Modify Registry
3Subvert Trust Controls
1Install Root Certificate
1