General
-
Target
vir.exe
-
Size
37.5MB
-
Sample
240524-mjbwpadf8y
-
MD5
51b8b0ed477e66a187003f8f31e04b4f
-
SHA1
8f04326efc72dde67c8c43e8dd72a3e37556e44a
-
SHA256
4cf8501c814c5f709cbe2fa7943479d53254fec9f0d877ddb86fd2aae7d665bb
-
SHA512
ef68eddc80ee2d51deff39d15278d20b8096d462ff2b9bff5bab153cdabb76d718b95f5d3080d30dde6e4a12f6ea78d042f2b8bf33d4fc3d31ef43bbd2ef89e8
-
SSDEEP
786432:54RerlLa3nOEwrkACTeyYQbjGEhM6xHXkvj:KulW3OEoANHUr
Behavioral task
behavioral1
Sample
vir.exe
Resource
win10v2004-20240426-en
Malware Config
Extracted
quasar
-
reconnect_delay
3000
Extracted
quasar
1.4.1
romka
jozzu420-51305.portmap.host:51305
0445c342-b551-411c-9b80-cd437437f491
-
encryption_key
E1BF1D99459F04CAF668F054744BC2C514B0A3D6
-
install_name
Romilyaa.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Windows 10 Boot
-
subdirectory
SubDir
Targets
-
-
Target
vir.exe
-
Size
37.5MB
-
MD5
51b8b0ed477e66a187003f8f31e04b4f
-
SHA1
8f04326efc72dde67c8c43e8dd72a3e37556e44a
-
SHA256
4cf8501c814c5f709cbe2fa7943479d53254fec9f0d877ddb86fd2aae7d665bb
-
SHA512
ef68eddc80ee2d51deff39d15278d20b8096d462ff2b9bff5bab153cdabb76d718b95f5d3080d30dde6e4a12f6ea78d042f2b8bf33d4fc3d31ef43bbd2ef89e8
-
SSDEEP
786432:54RerlLa3nOEwrkACTeyYQbjGEhM6xHXkvj:KulW3OEoANHUr
-
MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
-
MassLogger Main payload
-
Modifies WinLogon for persistence
-
Modifies firewall policy service
-
PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
-
Quasar payload
-
Suspicious use of NtCreateProcessExOtherParentProcess
-
Suspicious use of NtCreateUserProcessOtherParentProcess
-
Identifies VirtualBox via ACPI registry values (likely anti-VM)
-
Modifies boot configuration data using bcdedit
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Downloads MZ/PE file
-
Drops file in Drivers directory
-
Sets DLL path for service in the registry
-
Sets service image path in registry
-
.NET Reactor proctector
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
-
Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
-
Executes dropped EXE
-
Loads dropped DLL
-
Modifies file permissions
-
Modifies system executable filetype association
-
Registers COM server for autorun
-
Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
-
Adds Run key to start application
-
Checks for any installed AV software in registry
-
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops desktop.ini file(s)
-
Legitimate hosting services abused for malware hosting/C2
-
Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
AutoIT Executable
AutoIT scripts compiled to PE executables.
-
Drops file in System32 directory
-
Suspicious use of NtSetInformationThreadHideFromDebugger
-
Suspicious use of SetThreadContext
-
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1System Services
1Service Execution
1Persistence
Boot or Logon Autostart Execution
5Registry Run Keys / Startup Folder
4Winlogon Helper DLL
1Create or Modify System Process
3Windows Service
3Event 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
3Windows Service
3Event 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 Tools
4Modify Registry
13Pre-OS Boot
1Bootkit
1Subvert Trust Controls
1Install Root Certificate
1Virtualization/Sandbox Evasion
1