General
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Target
BUG32.exe
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Size
3.0MB
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Sample
240415-ttv6msag65
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MD5
149cc2ec1900cb778afb50d8026eadf5
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SHA1
a7bc1bbc7bdc970757ec369ef0b51dc53989f131
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SHA256
817a695e53a1d6e24f2c701751b4d18468f20698f30fada420dfba6e21a09797
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SHA512
d617654478beb6325d86c108cddaff8f8d658a235d26b8e0282ed85dca826bdb62b0b67e749c7cd421dbae1d98084220e2f4d5779badb8fd7ab07ff333a35553
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SSDEEP
49152:Or2U5IahDUGN97rkqOAackLjQ0rZEAh3oA6wHE+K60Kk0aCLkfAZKt0OJTcL:4H2ahFNNrg3QbQoA6wHEnFN4IJu
Static task
static1
Behavioral task
behavioral1
Sample
BUG32.exe
Resource
win7-20240221-en
Malware Config
Targets
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Target
BUG32.exe
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Size
3.0MB
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MD5
149cc2ec1900cb778afb50d8026eadf5
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SHA1
a7bc1bbc7bdc970757ec369ef0b51dc53989f131
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SHA256
817a695e53a1d6e24f2c701751b4d18468f20698f30fada420dfba6e21a09797
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SHA512
d617654478beb6325d86c108cddaff8f8d658a235d26b8e0282ed85dca826bdb62b0b67e749c7cd421dbae1d98084220e2f4d5779badb8fd7ab07ff333a35553
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SSDEEP
49152:Or2U5IahDUGN97rkqOAackLjQ0rZEAh3oA6wHE+K60Kk0aCLkfAZKt0OJTcL:4H2ahFNNrg3QbQoA6wHEnFN4IJu
Score10/10-
Modifies WinLogon for persistence
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Renames multiple (155) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Modifies system executable filetype association
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Drops desktop.ini file(s)
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1