Analysis
- max time kernel
149s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
19/07/2026, 13:10
General
- Target b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
- Size 801KB
- Sample260719-qelf4set3t
- SHA256 b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
Malware Config
Extracted
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djvu
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http://asvb.top/nddddhsspen6/get.php
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extension
.pcqq
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offline_id
3pNdLH1399769YerBBKCxHURRAqLhaXsGw3Fbkt1
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payload_url
http://asvb.top/files/penelop/updatewin1.exe
http://asvb.top/files/penelop/updatewin2.exe
http://asvb.top/files/penelop/updatewin.exe
http://asvb.top/files/penelop/3.exe
http://asvb.top/files/penelop/4.exe
http://asvb.top/files/penelop/5.exe
-
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 3 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\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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\9ce262ef-ca43-44eb-8646-662cc298f574" /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\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe"C:\Users\Admin\AppData\Local\Temp\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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\9ce262ef-ca43-44eb-8646-662cc298f574\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exeC:\Users\Admin\AppData\Local\9ce262ef-ca43-44eb-8646-662cc298f574\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.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\9ce262ef-ca43-44eb-8646-662cc298f574\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exeC:\Users\Admin\AppData\Local\9ce262ef-ca43-44eb-8646-662cc298f574\b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
8B2B9A00839EED1DFDCCC3BFC2F5DF12
B46811C17859FFB409CF0E904A4AA8F8
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9.exe
memory/1716-19-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/1716-24-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/1924-2-0x0000000002270000-0x000000000238B000-memory.dmp
memory/1924-1-0x0000000002160000-0x00000000021F2000-memory.dmp
memory/3816-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3816-15-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3816-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3816-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3816-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4488-26-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/4488-30-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/4752-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4752-41-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4752-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-44-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-46-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-47-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-25-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4948-55-0x0000000000400000-0x0000000000537000-memory.dmp