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Analysis
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max time kernel
0s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
31/12/2023, 13:25
Behavioral task
behavioral1
Sample
37eadb2a6a140992e449eabfb0835d8f.exe
Resource
win7-20231129-en
General
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Target
37eadb2a6a140992e449eabfb0835d8f.exe
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Size
402KB
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MD5
37eadb2a6a140992e449eabfb0835d8f
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SHA1
77cc4134b54cc4a07624e7b332713a08b7efc617
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SHA256
4a666cb1c605e9318e069c60f68589c67eeb6b30c49975a9189f15f2a6aab463
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SHA512
d521f6cb1ab2723bafc5093eb69c326ce65f48a6961eddb8107159663e60104cf38d9baaea18013939ced450d0e8b63960619f2a40c7cdb715226da51b769e24
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SSDEEP
6144:kmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgW:NSmLAuEY71fviagATFmebVQDcYc6
Malware Config
Extracted
njrat
0.6.4
hhhmach.ddns.net:1177
5cd8f17f4086744065eb0992a09e05a2
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reg_key
5cd8f17f4086744065eb0992a09e05a2
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 2584 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe Trojan.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe Trojan.exe -
Executes dropped EXE 2 IoCs
pid Process 2396 test.exe 2168 Trojan.exe -
Loads dropped DLL 2 IoCs
pid Process 2668 cmd.exe 2396 test.exe -
resource yara_rule behavioral1/memory/2252-1-0x0000000000400000-0x00000000004FA000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .." Trojan.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .." Trojan.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 2252 wrote to memory of 2668 2252 37eadb2a6a140992e449eabfb0835d8f.exe 20 PID 2252 wrote to memory of 2668 2252 37eadb2a6a140992e449eabfb0835d8f.exe 20 PID 2252 wrote to memory of 2668 2252 37eadb2a6a140992e449eabfb0835d8f.exe 20 PID 2252 wrote to memory of 2668 2252 37eadb2a6a140992e449eabfb0835d8f.exe 20 PID 2668 wrote to memory of 2396 2668 cmd.exe 19 PID 2668 wrote to memory of 2396 2668 cmd.exe 19 PID 2668 wrote to memory of 2396 2668 cmd.exe 19 PID 2668 wrote to memory of 2396 2668 cmd.exe 19 PID 2396 wrote to memory of 2168 2396 test.exe 18 PID 2396 wrote to memory of 2168 2396 test.exe 18 PID 2396 wrote to memory of 2168 2396 test.exe 18 PID 2396 wrote to memory of 2168 2396 test.exe 18 PID 2168 wrote to memory of 2584 2168 Trojan.exe 17 PID 2168 wrote to memory of 2584 2168 Trojan.exe 17 PID 2168 wrote to memory of 2584 2168 Trojan.exe 17 PID 2168 wrote to memory of 2584 2168 Trojan.exe 17
Processes
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C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe"C:\Users\Admin\AppData\Local\Temp\37eadb2a6a140992e449eabfb0835d8f.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2252 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2668
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE1⤵
- Modifies Windows Firewall
PID:2584
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C:\Users\Admin\AppData\Local\Temp\Trojan.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.exe"1⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2168
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C:\Users\Admin\AppData\Local\Temp\test.exetest.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2396
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
78KB
MD542c5854aa0709d8bf6c28ea82c67b9a5
SHA1124ea473f0572009de85a4a46f361109f4fae7d6
SHA25671e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb
SHA512c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a