General
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Target
vir.exe
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Size
311.3MB
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Sample
240524-v56besde3z
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MD5
b3bfc1b8071fc021af93a37f4d636a35
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SHA1
e9223c95098c3691efdee3085ab6e5ea8004a168
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SHA256
746c46a902c0931edad094b90a90090145d611196e444b24a72df8458b65165b
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SHA512
9006e22b360b082e1a3bdae3307b857409fac2d57d4b92616456521c6d1ad2ba91f390b0e20d9448502ef4fae8e6dfc8f5aaf41065f43750d3f29830e49b0e73
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SSDEEP
6291456:62qVJw+odBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHidHVeVp:Nr+WeSWgfecGT4RjvqP85SAD
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
lumma
https://employhabragaomlsp.shop/api
https://museumtespaceorsp.shop/api
https://buttockdecarderwiso.shop/api
https://averageaattractiionsl.shop/api
https://femininiespywageg.shop/api
https://stalfbaclcalorieeis.shop/api
https://civilianurinedtsraov.shop/api
https://roomabolishsnifftwk.shop/api
Targets
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Target
vir.exe
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Size
311.3MB
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MD5
b3bfc1b8071fc021af93a37f4d636a35
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SHA1
e9223c95098c3691efdee3085ab6e5ea8004a168
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SHA256
746c46a902c0931edad094b90a90090145d611196e444b24a72df8458b65165b
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SHA512
9006e22b360b082e1a3bdae3307b857409fac2d57d4b92616456521c6d1ad2ba91f390b0e20d9448502ef4fae8e6dfc8f5aaf41065f43750d3f29830e49b0e73
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SSDEEP
6291456:62qVJw+odBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHidHVeVp:Nr+WeSWgfecGT4RjvqP85SAD
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Detect Umbral payload
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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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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Downloads MZ/PE file
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Drops file in Drivers directory
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Modifies Windows Firewall
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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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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 installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops desktop.ini file(s)
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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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Sets desktop wallpaper using registry
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Suspicious use of NtSetInformationThreadHideFromDebugger
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Suspicious use of SetThreadContext
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MITRE ATT&CK Matrix ATT&CK v13
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
2Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Abuse Elevation Control Mechanism
1Bypass User Account Control
1Scheduled Task/Job
1Defense Evasion
Modify Registry
8Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
4Disable or Modify Tools
3Disable or Modify System Firewall
1Virtualization/Sandbox Evasion
1File and Directory Permissions Modification
1Pre-OS Boot
1Bootkit
1Hide Artifacts
1Hidden Files and Directories
1