General
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Target
vir.exe
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Size
36.2MB
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Sample
240523-21z26scg22
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MD5
b264bf0492e3370ceda89b4163ec4fce
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SHA1
3999871b86399e8e7f00b7f07337eb33c36b2da0
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SHA256
5fcd371bdff34f9ac235a59e3b3f82c45638f94d144674cce9befe28c1d74edd
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SHA512
6cc45147128c5361c42a4f7bf111c8a76cf0b9a6a57a4fe56e8916e550d8c8bba987e7aee2db338c39bdd0f3ce7d0115bb8f1e578ea8eb5b1d300c986b1613ff
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SSDEEP
786432:a4RerlLa3nwEwrkACTe6YQbjGEhM67HXkvj:XulW3wEoA3HUr
Malware Config
Extracted
quasar
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reconnect_delay
3000
Extracted
quasar
1.4.1
romka
jozzu420-51305.portmap.host:51305
0445c342-b551-411c-9b80-cd437437f491
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encryption_key
E1BF1D99459F04CAF668F054744BC2C514B0A3D6
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install_name
Romilyaa.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Windows 10 Boot
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subdirectory
SubDir
Targets
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Target
vir.exe
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Size
36.2MB
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MD5
b264bf0492e3370ceda89b4163ec4fce
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SHA1
3999871b86399e8e7f00b7f07337eb33c36b2da0
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SHA256
5fcd371bdff34f9ac235a59e3b3f82c45638f94d144674cce9befe28c1d74edd
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SHA512
6cc45147128c5361c42a4f7bf111c8a76cf0b9a6a57a4fe56e8916e550d8c8bba987e7aee2db338c39bdd0f3ce7d0115bb8f1e578ea8eb5b1d300c986b1613ff
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SSDEEP
786432:a4RerlLa3nwEwrkACTe6YQbjGEhM67HXkvj:XulW3wEoA3HUr
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Modifies WinLogon for persistence
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Modifies visibility of file extensions in Explorer
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Modifies visiblity of hidden/system files in Explorer
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Quasar payload
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Disables RegEdit via registry modification
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.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
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Executes dropped EXE
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Modifies file permissions
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Adds Run key to start application
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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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Modifies WinLogon
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AutoIT Executable
AutoIT scripts compiled to PE executables.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
1Winlogon Helper DLL
2Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
1Winlogon Helper DLL
2Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
1Hide Artifacts
2Hidden Files and Directories
2Impair Defenses
3Disable or Modify Tools
3Modify Registry
10