Analysis
- max time kernel
149s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
31/07/2026, 12:52
General
- Target f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe
- Size 763KB
- Sample260731-p34rxstdjh
- SHA256 f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe
Malware Config
Extracted
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djvu
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http://cajgtus.com/test2/get.php
-
extension
.bgzq
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
-
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
-
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\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe"C:\Users\Admin\AppData\Local\Temp\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe"C:\Users\Admin\AppData\Local\Temp\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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\d8c6a0a5-3dd4-4c43-bf12-03a7f7ded0f7" /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\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe"C:\Users\Admin\AppData\Local\Temp\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe"C:\Users\Admin\AppData\Local\Temp\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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\d8c6a0a5-3dd4-4c43-bf12-03a7f7ded0f7\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exeC:\Users\Admin\AppData\Local\d8c6a0a5-3dd4-4c43-bf12-03a7f7ded0f7\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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\d8c6a0a5-3dd4-4c43-bf12-03a7f7ded0f7\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exeC:\Users\Admin\AppData\Local\d8c6a0a5-3dd4-4c43-bf12-03a7f7ded0f7\f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.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
Loading Replay Monitor...
Downloads
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
70825F0EABF2526E540CA0F7C268D189
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
f6a6765642f0f8c4b81f45d4e1a9f65505432bbf4c249fa3c96b82d9c712effe.exe
memory/2224-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2224-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2224-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2224-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2224-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3348-41-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3348-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4696-1-0x0000000004670000-0x0000000004705000-memory.dmp
memory/4696-2-0x0000000005F70000-0x000000000608B000-memory.dmp
memory/5052-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-43-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-48-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-49-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-51-0x0000000000400000-0x0000000000537000-memory.dmp