General
-
Target
Precise+Bootstrapper.exe
-
Size
63KB
-
Sample
240727-b7pa5ssbpc
-
MD5
bc75267d1724e87a2dadd522f2c7aa59
-
SHA1
aa1f9078d6a4adc88adde9227bd0a96b87a9b138
-
SHA256
56d443b3ff8d1a3d19800b9735d5a274ce2fa42178cea9b491112a51178a10f7
-
SHA512
531bb6a561c384d53dfafa5fd73891d129abda6b0bff69db934be95682c1f23599d5b4e037fbf52a3ae471b2d108ca470cbf36b2a1fb3ce7ec970cae9bbc9557
-
SSDEEP
1536:ECiJFH6GEOcEQyr5+b38+Zoo+dh96CyNkjOjFnl4LL:ET6O7Qyr5+b38aAcoOjzsL
Behavioral task
behavioral1
Sample
Precise+Bootstrapper.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
Precise+Bootstrapper.exe
Resource
win10v2004-20240704-en
Malware Config
Extracted
xworm
75.60.102.27:7000
-
Install_directory
%AppData%
-
install_file
Fix.exe
Extracted
C:\PetyaRansomware-CSharpEdition.exe
Targets
-
-
Target
Precise+Bootstrapper.exe
-
Size
63KB
-
MD5
bc75267d1724e87a2dadd522f2c7aa59
-
SHA1
aa1f9078d6a4adc88adde9227bd0a96b87a9b138
-
SHA256
56d443b3ff8d1a3d19800b9735d5a274ce2fa42178cea9b491112a51178a10f7
-
SHA512
531bb6a561c384d53dfafa5fd73891d129abda6b0bff69db934be95682c1f23599d5b4e037fbf52a3ae471b2d108ca470cbf36b2a1fb3ce7ec970cae9bbc9557
-
SSDEEP
1536:ECiJFH6GEOcEQyr5+b38+Zoo+dh96CyNkjOjFnl4LL:ET6O7Qyr5+b38aAcoOjzsL
-
Detect Xworm Payload
-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
-
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
-
Drops startup file
-
Executes dropped EXE
-
Adds Run key to start application
-
Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
-
MITRE ATT&CK Matrix ATT&CK v13
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Scheduled Task/Job
1Scheduled Task
1