General
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Target
vir.exe
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Size
309.7MB
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Sample
240524-srkrfsag35
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MD5
8c0ebe82267225c00a8f86c9544f7d89
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SHA1
a4ed42fe1b08b5b7c97c571d545c33d1f725b1b2
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SHA256
78ed58dfda1ab06c17d4e6fc96660fd0ba14151ca09dcd14a60c34b82a88fc7a
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SHA512
f9f59d1e149e32dec9a47f8607c6c6ed409bdc6eff30f5aab0ab3f99675520e376b4bc9a1ad06a789a689d64d9f55d1ac44565de7dc6759d4901efea4ea1d75f
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SSDEEP
6291456:O2qVJwdodBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHedHVeVp:ZrdWeSWgfecGT4RjvqP852AD
Behavioral task
behavioral1
Sample
vir.exe
Resource
win10v2004-20240508-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
Extracted
risepro
147.45.47.126:58709
Targets
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Target
vir.exe
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Size
309.7MB
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MD5
8c0ebe82267225c00a8f86c9544f7d89
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SHA1
a4ed42fe1b08b5b7c97c571d545c33d1f725b1b2
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SHA256
78ed58dfda1ab06c17d4e6fc96660fd0ba14151ca09dcd14a60c34b82a88fc7a
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SHA512
f9f59d1e149e32dec9a47f8607c6c6ed409bdc6eff30f5aab0ab3f99675520e376b4bc9a1ad06a789a689d64d9f55d1ac44565de7dc6759d4901efea4ea1d75f
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SSDEEP
6291456:O2qVJwdodBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHedHVeVp:ZrdWeSWgfecGT4RjvqP852AD
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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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Modifies firewall policy service
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PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
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Quasar payload
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Modifies boot configuration data using bcdedit
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Blocklisted process makes network request
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Creates new service(s)
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies Installed Components in the registry
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Modifies Windows Firewall
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Sets service image path 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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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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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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Modifies system executable filetype association
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Registers COM server for autorun
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Accesses Microsoft Outlook profiles
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Adds Run key to start application
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Checks for any installed AV software in registry
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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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Drops Chrome extension
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Drops desktop.ini file(s)
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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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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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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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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1System Services
2Service Execution
2Persistence
Boot or Logon Autostart Execution
5Registry Run Keys / Startup Folder
4Winlogon Helper DLL
1Create or Modify System Process
4Windows Service
4Event Triggered Execution
1Change Default File Association
1Pre-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
4Winlogon Helper DLL
1Create or Modify System Process
4Windows Service
4Event Triggered Execution
1Change Default File Association
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1File and Directory Permissions Modification
1Impair Defenses
5Disable or Modify System Firewall
1Disable or Modify Tools
3Modify Registry
11Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Virtualization/Sandbox Evasion
1