General
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Target
vir.exe
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Size
309.7MB
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Sample
240524-trgv8sbf4z
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MD5
458f2e3e9414ba191c3ad1e9ffb5b445
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SHA1
d7038bd4cef9ca524c298616eb7eabc009ff315f
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SHA256
7f81d675aca70623fb0f906e1efbca85f6a64f2d5ad283388a955170570a58a8
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SHA512
b1ba5f1ce63e1315dc606216324df59991e3e1840c977aa78de278266bf8acaafa72dfe2ae80d7d4b96576338f87d718476f56900a9cc68fbf8f145c84e982ee
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SSDEEP
6291456:O2qVJwdodBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkH5dHVeVp:ZrdWeSWgfecGT4RjvqP85fAD
Behavioral task
behavioral1
Sample
vir.exe
Resource
win10v2004-20240226-en
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
309.7MB
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MD5
458f2e3e9414ba191c3ad1e9ffb5b445
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SHA1
d7038bd4cef9ca524c298616eb7eabc009ff315f
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SHA256
7f81d675aca70623fb0f906e1efbca85f6a64f2d5ad283388a955170570a58a8
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SHA512
b1ba5f1ce63e1315dc606216324df59991e3e1840c977aa78de278266bf8acaafa72dfe2ae80d7d4b96576338f87d718476f56900a9cc68fbf8f145c84e982ee
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SSDEEP
6291456:O2qVJwdodBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkH5dHVeVp:ZrdWeSWgfecGT4RjvqP85fAD
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MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
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MassLogger Main payload
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Modifies WinLogon for persistence
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Quasar payload
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Blocklisted process makes network request
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Drops file in Drivers directory
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.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
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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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Loads dropped DLL
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Modifies file permissions
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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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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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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
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3