Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
09/08/2026, 14:53
General
- Target daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe
- Size 683KB
- Sample260809-r9fpsaba25
- SHA256 daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58
Malware Config
Extracted
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djvu
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http://zexeq.com/test1/get.php
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extension
.cdqw
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offline_id
mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1
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payload_url
http://brusuax.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 19 IoCs
- Checks computer location settings 2 TTPs 2 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 5 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\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\Temp\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\Temp\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\c19c19a1-d96d-480e-8d6e-2573c4972acd" /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\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\Temp\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\Temp\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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 2656 -s 5685⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2656 -ip 26561⤵
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C:\Users\Admin\AppData\Local\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exeC:\Users\Admin\AppData\Local\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exeC:\Users\Admin\AppData\Local\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.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\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe"C:\Users\Admin\AppData\Local\c19c19a1-d96d-480e-8d6e-2573c4972acd\daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe" --Admin IsNotAutoStart IsNotTask4⤵
- 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
bowsakkdestx.txt
daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58.exe
memory/2072-2-0x00000000025F0000-0x000000000270B000-memory.dmp
memory/2072-1-0x0000000002550000-0x00000000025EC000-memory.dmp
memory/2448-26-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2448-6-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2448-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2448-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2448-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2656-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2656-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2656-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-62-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-53-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-71-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-67-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-63-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3316-61-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4996-31-0x0000000000400000-0x00000000008CB000-memory.dmp
memory/4996-34-0x0000000000400000-0x00000000008CB000-memory.dmp
memory/5032-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5032-42-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5032-47-0x0000000000400000-0x0000000000537000-memory.dmp