Resubmissions
05/03/2026, 19:15
260305-xyamaaax3z05/03/2026, 19:10
260305-xvr26aax2v1003/03/2026, 14:05
260303-rd357sat3x10Analysis
- max time kernel
149s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
03/03/2026, 14:05
General
- Target Application Petya screen locker.exe
- Size 391KB
- Sample260303-rd357sat3x
- SHA256 d606959edab4be250b820aa6d2e7da7fa0111c6ffc993bfcad28d3ab9350db7c
Malware Config
Signatures
- UAC bypass 3 TTPs 1 IoCs
- Disables Task Manager via registry modification
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Kills process with taskkill 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- System policy modification 1 TTPs 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Application Petya screen locker.exe"C:\Users\Admin\AppData\Local\Temp\Application Petya screen locker.exe"1⤵
- UAC bypass
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
- System policy modification
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k taskkill /f /im explorer.exe2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im explorer.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
3Replay Monitor
Loading Replay Monitor...
Downloads
Font.ttf
memory/4380-10-0x0000000000CB0000-0x0000000000D13000-memory.dmp
memory/4468-0-0x0000000000D80000-0x0000000000DE8000-memory.dmp
memory/4468-1-0x0000000005C70000-0x0000000006214000-memory.dmp
memory/4468-2-0x00000000057C0000-0x0000000005852000-memory.dmp
memory/4468-3-0x0000000005A40000-0x0000000005A50000-memory.dmp
memory/4468-4-0x0000000005970000-0x000000000597A000-memory.dmp
memory/4468-11-0x0000000005B70000-0x0000000005BD3000-memory.dmp
memory/4468-12-0x0000000007B30000-0x0000000007BAE000-memory.dmp
memory/4468-13-0x0000000005A40000-0x0000000005A50000-memory.dmp