Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 12:33
General
- Target 6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe
- Size 787KB
- Sample260809-prb8jaer2t
- SHA256 6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239
Malware Config
Extracted
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djvu
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http://cajgtus.com/test1/get.php
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extension
.bgjs
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
- Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
- Detected Djvu ransomware 20 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 2 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\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe"C:\Users\Admin\AppData\Local\Temp\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.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\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe"C:\Users\Admin\AppData\Local\Temp\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.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\d6bffe04-a0a6-4cea-bcf6-67ae38fc05fe" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Local\Temp\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe"C:\Users\Admin\AppData\Local\Temp\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.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\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe"C:\Users\Admin\AppData\Local\Temp\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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-
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C:\Users\Admin\AppData\Local\d6bffe04-a0a6-4cea-bcf6-67ae38fc05fe\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exeC:\Users\Admin\AppData\Local\d6bffe04-a0a6-4cea-bcf6-67ae38fc05fe\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\d6bffe04-a0a6-4cea-bcf6-67ae38fc05fe\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exeC:\Users\Admin\AppData\Local\d6bffe04-a0a6-4cea-bcf6-67ae38fc05fe\6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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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
6b20888a57749e9e7bdd567daa7347e525018e32aa98d61f684f3ed9372a4239.exe
memory/2296-1-0x0000000003000000-0x000000000309D000-memory.dmp
memory/2296-2-0x0000000004840000-0x000000000495B000-memory.dmp
memory/3384-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3384-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3384-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3384-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3384-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-47-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-49-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-43-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-45-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3408-48-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-41-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3900-32-0x0000000000400000-0x0000000000537000-memory.dmp