Analysis
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max time kernel
150s -
max time network
52s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
26-11-2022 08:43
Behavioral task
behavioral1
Sample
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe
Resource
win10v2004-20220812-en
General
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Target
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe
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Size
23KB
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MD5
ab076fa27a284d29152b8273a82b95b4
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SHA1
4bfa210f44c47050b0ff92ca7c76a4225edb9150
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SHA256
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b
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SHA512
38940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f
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SSDEEP
384:ScqbCK0l4h7o9SVyDGvENuh46/gJkOmMSW38mRvR6JZlbw8hqIusZzZYqA:F30py6vhxaRpcnuHb
Malware Config
Extracted
njrat
0.7d
Bot
smuktnet.ddns.net:5552
ae4562ec1d4d0afd82039ca2517bd6df
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reg_key
ae4562ec1d4d0afd82039ca2517bd6df
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
server.exepid process 992 server.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Loads dropped DLL 1 IoCs
Processes:
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exepid process 1884 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
server.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ae4562ec1d4d0afd82039ca2517bd6df = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ae4562ec1d4d0afd82039ca2517bd6df = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 17 IoCs
Processes:
server.exedescription pid process Token: SeDebugPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe Token: 33 992 server.exe Token: SeIncBasePriorityPrivilege 992 server.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exeserver.exedescription pid process target process PID 1884 wrote to memory of 992 1884 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe server.exe PID 1884 wrote to memory of 992 1884 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe server.exe PID 1884 wrote to memory of 992 1884 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe server.exe PID 1884 wrote to memory of 992 1884 203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe server.exe PID 992 wrote to memory of 2000 992 server.exe netsh.exe PID 992 wrote to memory of 2000 992 server.exe netsh.exe PID 992 wrote to memory of 2000 992 server.exe netsh.exe PID 992 wrote to memory of 2000 992 server.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe"C:\Users\Admin\AppData\Local\Temp\203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
23KB
MD5ab076fa27a284d29152b8273a82b95b4
SHA14bfa210f44c47050b0ff92ca7c76a4225edb9150
SHA256203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b
SHA51238940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
23KB
MD5ab076fa27a284d29152b8273a82b95b4
SHA14bfa210f44c47050b0ff92ca7c76a4225edb9150
SHA256203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b
SHA51238940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f
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\Users\Admin\AppData\Local\Temp\server.exeFilesize
23KB
MD5ab076fa27a284d29152b8273a82b95b4
SHA14bfa210f44c47050b0ff92ca7c76a4225edb9150
SHA256203908fecf76e8f5b21ffb093cf2347eaf235fa2212e44bb023c9ee73ae6710b
SHA51238940c5510fd4169057f5dfa3e54eef7683649a8cb84794772562317d8d947e9a6a16d781b79262eff6d3f408ac008b05767fe8354da100c9dedb0b4fde9609f
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memory/992-57-0x0000000000000000-mapping.dmp
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memory/992-62-0x0000000074C30000-0x00000000751DB000-memory.dmpFilesize
5.7MB
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memory/992-65-0x0000000074C30000-0x00000000751DB000-memory.dmpFilesize
5.7MB
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memory/1884-54-0x0000000075E31000-0x0000000075E33000-memory.dmpFilesize
8KB
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memory/1884-55-0x0000000074C30000-0x00000000751DB000-memory.dmpFilesize
5.7MB
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memory/1884-61-0x0000000074C30000-0x00000000751DB000-memory.dmpFilesize
5.7MB
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memory/2000-63-0x0000000000000000-mapping.dmp