Analysis
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max time kernel
153s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
01-10-2022 23:47
Static task
static1
Behavioral task
behavioral1
Sample
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe
Resource
win10v2004-20220812-en
General
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Target
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe
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Size
295KB
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MD5
976c9a37426d13551b9fa9c729a776fa
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SHA1
0ef8432c846758be24f61a9547bc1a3465853a9c
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SHA256
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed
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SHA512
45bfe3263b87e7394accc5fc936bcd93e02e6890375a104388b5f46a9ba8607285e5eabb5466d27275df95fe1549dc1d69d4fe3d3b4d6dc2809f242a28e5196b
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SSDEEP
6144:XF2a1VrPUVqTYDj72GhNnkYqqfLdI64nqS/lB:V2EBPMoOn2iNNq44d
Malware Config
Extracted
njrat
0.7d
HacKed
youfb.ddns.net:5552
b33487bbde5a3e79118d90fbf5ed678a
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reg_key
b33487bbde5a3e79118d90fbf5ed678a
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 1116 svchost.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Drops startup file 2 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b33487bbde5a3e79118d90fbf5ed678a.exe svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b33487bbde5a3e79118d90fbf5ed678a.exe svchost.exe -
Loads dropped DLL 1 IoCs
Processes:
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exepid process 1928 7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\b33487bbde5a3e79118d90fbf5ed678a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\b33487bbde5a3e79118d90fbf5ed678a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." svchost.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 7 IoCs
Processes:
svchost.exedescription pid process Token: SeDebugPrivilege 1116 svchost.exe Token: 33 1116 svchost.exe Token: SeIncBasePriorityPrivilege 1116 svchost.exe Token: 33 1116 svchost.exe Token: SeIncBasePriorityPrivilege 1116 svchost.exe Token: 33 1116 svchost.exe Token: SeIncBasePriorityPrivilege 1116 svchost.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exesvchost.exedescription pid process target process PID 1928 wrote to memory of 1116 1928 7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe svchost.exe PID 1928 wrote to memory of 1116 1928 7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe svchost.exe PID 1928 wrote to memory of 1116 1928 7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe svchost.exe PID 1928 wrote to memory of 1116 1928 7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe svchost.exe PID 1116 wrote to memory of 912 1116 svchost.exe netsh.exe PID 1116 wrote to memory of 912 1116 svchost.exe netsh.exe PID 1116 wrote to memory of 912 1116 svchost.exe netsh.exe PID 1116 wrote to memory of 912 1116 svchost.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe"C:\Users\Admin\AppData\Local\Temp\7a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\svchost.exe"C:\Users\Admin\AppData\Local\Temp\svchost.exe"2⤵
- Executes dropped EXE
- Drops startup file
- 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\svchost.exe" "svchost.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\svchost.exeFilesize
295KB
MD5976c9a37426d13551b9fa9c729a776fa
SHA10ef8432c846758be24f61a9547bc1a3465853a9c
SHA2567a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed
SHA51245bfe3263b87e7394accc5fc936bcd93e02e6890375a104388b5f46a9ba8607285e5eabb5466d27275df95fe1549dc1d69d4fe3d3b4d6dc2809f242a28e5196b
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C:\Users\Admin\AppData\Local\Temp\svchost.exeFilesize
295KB
MD5976c9a37426d13551b9fa9c729a776fa
SHA10ef8432c846758be24f61a9547bc1a3465853a9c
SHA2567a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed
SHA51245bfe3263b87e7394accc5fc936bcd93e02e6890375a104388b5f46a9ba8607285e5eabb5466d27275df95fe1549dc1d69d4fe3d3b4d6dc2809f242a28e5196b
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\Users\Admin\AppData\Local\Temp\svchost.exeFilesize
295KB
MD5976c9a37426d13551b9fa9c729a776fa
SHA10ef8432c846758be24f61a9547bc1a3465853a9c
SHA2567a3ac6dd3d13ab788f389ec5452bac3065491564d1213c25c58fc7bcbddf2eed
SHA51245bfe3263b87e7394accc5fc936bcd93e02e6890375a104388b5f46a9ba8607285e5eabb5466d27275df95fe1549dc1d69d4fe3d3b4d6dc2809f242a28e5196b
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memory/912-66-0x0000000000000000-mapping.dmp
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memory/1116-62-0x0000000001240000-0x0000000001292000-memory.dmpFilesize
328KB
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memory/1116-68-0x0000000000595000-0x00000000005A6000-memory.dmpFilesize
68KB
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memory/1116-65-0x0000000000595000-0x00000000005A6000-memory.dmpFilesize
68KB
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memory/1116-59-0x0000000000000000-mapping.dmp
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memory/1928-57-0x00000000003B0000-0x00000000003BA000-memory.dmpFilesize
40KB
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memory/1928-64-0x0000000004CD5000-0x0000000004CE6000-memory.dmpFilesize
68KB
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memory/1928-54-0x0000000000FA0000-0x0000000000FF2000-memory.dmpFilesize
328KB
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memory/1928-56-0x0000000004CD5000-0x0000000004CE6000-memory.dmpFilesize
68KB
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memory/1928-55-0x00000000762B1000-0x00000000762B3000-memory.dmpFilesize
8KB