Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 16:07
General
- Target 6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe
- Size 741KB
- Sample260809-tkm4ns1eqd
- SHA256 6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907
Malware Config
Extracted
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djvu
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http://zexeq.com/test2/get.php
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extension
.itrz
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offline_id
9FgVtzPuDnE9NZWeLG9q9D2SjzVyIqJJ4jFNKXt1
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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 23 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 4 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 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 9 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 31 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\Temp\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.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\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\Temp\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.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\b752d28a-b3d8-4c30-bcec-0948afd4fa0e" /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\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\Temp\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.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\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\Temp\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4172 -s 5685⤵
- Program crash
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-
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C:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exeC:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.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\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exeC:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe" --Admin IsNotAutoStart IsNotTask3⤵
- 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\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe"C:\Users\Admin\AppData\Local\b752d28a-b3d8-4c30-bcec-0948afd4fa0e\6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4172 -ip 41721⤵
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
6ddfc497d6820a9d69bbf6e4b63f2e1011da87479fa89392d983eef3437bb907.exe
bowsakkdestx.txt
build3.exe
memory/560-2-0x00000000023E0000-0x00000000024FB000-memory.dmp
memory/560-1-0x0000000000730000-0x00000000007CA000-memory.dmp
memory/724-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/724-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/724-20-0x0000000000400000-0x0000000000537000-memory.dmp
memory/724-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/724-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/972-33-0x0000000000400000-0x000000000056D000-memory.dmp
memory/972-37-0x0000000000400000-0x000000000056D000-memory.dmp
memory/1144-45-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1144-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2160-22-0x0000000000400000-0x000000000056D000-memory.dmp
memory/2160-28-0x0000000000400000-0x000000000056D000-memory.dmp
memory/4172-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4172-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4172-27-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-71-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-53-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-67-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-78-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-79-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-81-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-82-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-83-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4588-84-0x0000000000400000-0x0000000000537000-memory.dmp