Analysis
- max time kernel
149s - max time network
153s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
16/05/2026, 14:28
General
- Target 2026-05-16_a26afc9b0e510b396ecb71610bcd0581_conti.exe
- Size 181KB
- Sample260516-rtfd3sey9w
- SHA256 5cc6a460cc0ce05eb0d181d5efb584aa1fa1e37f1b2a3182298e6d665902342c
Score
9/10
Malware Config
Signatures
- Custom signatureDetects Windows executables referencing non-Windows User-Agents 5 IoCs
- Drops startup file 2 IoCs
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of WriteProcessMemory 1 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-16_a26afc9b0e510b396ecb71610bcd0581_conti.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-16_a26afc9b0e510b396ecb71610bcd0581_conti.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exeschtasks /create /tn "Windows Security Update" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsSecurityUpdate.exe" /sc onlogon /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsSecurityUpdate.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsSecurityUpdate.exe"1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
WindowsSecurityUpdate.exe
memory/5216-0-0x00007FF6CA640000-0x00007FF6CA66B000-memory.dmp
memory/5216-7-0x00007FF6CA640000-0x00007FF6CA66B000-memory.dmp
memory/5216-12-0x00007FF6CA640000-0x00007FF6CA66B000-memory.dmp
memory/5548-5-0x00007FF62DAF0000-0x00007FF62DB1B000-memory.dmp