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
158s - platform
windows11-21h2_x64 - resource
win11-20260130-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
- 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
- Adds Run key to start application
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
- System policy modification
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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/2724-0-0x0000000000900000-0x0000000000968000-memory.dmp
memory/2724-1-0x0000000005B60000-0x0000000006106000-memory.dmp
memory/2724-2-0x00000000054E0000-0x0000000005572000-memory.dmp
memory/2724-3-0x00000000054D0000-0x00000000054E0000-memory.dmp
memory/2724-4-0x00000000056A0000-0x00000000056AA000-memory.dmp
memory/2724-10-0x0000000001480000-0x000000000155F000-memory.dmp
memory/2724-11-0x00000000054D0000-0x00000000054E0000-memory.dmp