Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 12:00
General
- Target 8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe
- Size 691KB
- Sample260809-n6askszzc1
- SHA256 8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b
Malware Config
Extracted
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djvu
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http://cajgtus.com/test1/get.php
-
extension
.watz
-
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
- payload_url
-
ransomnote
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Signatures
- Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Detected Djvu ransomware 18 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 1 TTPs 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 23 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\c0e73456-dc37-40c7-b08b-9b0742c8c16c" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe"C:\Users\Admin\AppData\Local\Temp\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
-
-
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C:\Users\Admin\AppData\Local\c0e73456-dc37-40c7-b08b-9b0742c8c16c\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exeC:\Users\Admin\AppData\Local\c0e73456-dc37-40c7-b08b-9b0742c8c16c\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\c0e73456-dc37-40c7-b08b-9b0742c8c16c\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exeC:\Users\Admin\AppData\Local\c0e73456-dc37-40c7-b08b-9b0742c8c16c\8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
8cf61c66b1cde95afdc402040152b3ca0022fceb866b84be297572708b08cb5b.exe
memory/2348-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-61-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-60-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-59-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-57-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-43-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2348-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4036-42-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4036-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4036-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4324-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4940-1-0x00000000029F0000-0x0000000002A8D000-memory.dmp
memory/4940-2-0x0000000004520000-0x000000000463B000-memory.dmp