General
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Target
lol.exe
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Size
13.1MB
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Sample
240523-s1ftvsfh3z
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MD5
621d4a616715d165ed2c10e48e5fd94b
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SHA1
7fabfdb5167e59d0442df460e1b236cb5bc75fbe
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SHA256
7975eec3959bed57e86fb6fa917503a7a1242fdf589dde7600783fc37d3dfbde
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SHA512
793302845e76e8cc03bd8281abad4db786f361e5c1a691462b40da11e8e7ac6210e0e9c21b41493dedffc6724af146ef70b9f8448d51dc860725364e14cba442
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SSDEEP
196608:tbVYKe7PjQhn5EQ9hNQAYzA5k6cTWDn7JKObS09Vp7j1oTeBI7lm:pzuA5EWheYkv8LlCTe2s
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
lol.exe
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Size
13.1MB
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MD5
621d4a616715d165ed2c10e48e5fd94b
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SHA1
7fabfdb5167e59d0442df460e1b236cb5bc75fbe
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SHA256
7975eec3959bed57e86fb6fa917503a7a1242fdf589dde7600783fc37d3dfbde
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SHA512
793302845e76e8cc03bd8281abad4db786f361e5c1a691462b40da11e8e7ac6210e0e9c21b41493dedffc6724af146ef70b9f8448d51dc860725364e14cba442
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SSDEEP
196608:tbVYKe7PjQhn5EQ9hNQAYzA5k6cTWDn7JKObS09Vp7j1oTeBI7lm:pzuA5EWheYkv8LlCTe2s
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Detect Umbral payload
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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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Drops file in Drivers directory
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Manipulates Digital Signatures
Attackers can apply techniques such as modifying certain DLL exports to make their binary seem valid.
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Sets file execution options in registry
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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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Loads dropped DLL
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Modifies file permissions
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Registers COM server for autorun
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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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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
5Registry Run Keys / Startup Folder
3Winlogon Helper DLL
2Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
5Registry Run Keys / Startup Folder
3Winlogon 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
11Pre-OS Boot
1Bootkit
1