Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
31/07/2026, 16:08
General
- Target b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe
- Size 676KB
- Sample260731-tlehxsdb52
- SHA256 b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb
Malware Config
Extracted
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djvu
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http://zexeq.com/test1/get.php
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extension
.zpas
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offline_id
OnB5BCsUkG8OhWvHL3Y0tNlfgHqdMG4puQsBzvt1
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payload_url
http://colisumy.com/dl/build2.exe
http://zexeq.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 24 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\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe"C:\Users\Admin\AppData\Local\Temp\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe"C:\Users\Admin\AppData\Local\Temp\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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\73c72bb7-99fb-40a8-8c34-5e414490163d" /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\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe"C:\Users\Admin\AppData\Local\Temp\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe"C:\Users\Admin\AppData\Local\Temp\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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\73c72bb7-99fb-40a8-8c34-5e414490163d\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exeC:\Users\Admin\AppData\Local\73c72bb7-99fb-40a8-8c34-5e414490163d\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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\73c72bb7-99fb-40a8-8c34-5e414490163d\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exeC:\Users\Admin\AppData\Local\73c72bb7-99fb-40a8-8c34-5e414490163d\b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.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
b649202c247bb607073c2fcd5660b1b38d48370fff8c5f4b6af3dede4ed45beb.exe
bowsakkdestx.txt
memory/2100-2-0x0000000002520000-0x000000000263B000-memory.dmp
memory/2100-1-0x0000000002480000-0x000000000251C000-memory.dmp
memory/2748-47-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-60-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-69-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-68-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-66-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-67-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-64-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-53-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-48-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-43-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-41-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-44-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2748-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2876-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2876-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2876-28-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2876-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3404-30-0x0000000000400000-0x0000000000832000-memory.dmp
memory/3404-23-0x0000000000400000-0x0000000000832000-memory.dmp
memory/4268-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4268-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4268-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4268-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4268-21-0x0000000000400000-0x0000000000537000-memory.dmp