Analysis
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max time kernel
146s -
max time network
161s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
20-05-2022 04:20
Behavioral task
behavioral1
Sample
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe
Resource
win7-20220414-en
General
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Target
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe
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Size
37KB
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MD5
0cec5dc459979d97901084deeb06c866
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SHA1
1af8b020f6d9f4e66f03289985e2ef4436c193b2
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SHA256
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f
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SHA512
68b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7
Malware Config
Extracted
njrat
im523
HacKed
mypisa.ddns.net:4142
782066a3aa8eb0d77b6878e27ff8d179
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reg_key
782066a3aa8eb0d77b6878e27ff8d179
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
System.exepid process 1632 System.exe -
Modifies Windows Firewall 1 TTPs
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Drops file in Windows directory 2 IoCs
Processes:
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exedescription ioc process File created C:\Windows\System.exe a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe File opened for modification C:\Windows\System.exe a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.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 15 IoCs
Processes:
System.exedescription pid process Token: SeDebugPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe Token: 33 1632 System.exe Token: SeIncBasePriorityPrivilege 1632 System.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exeSystem.exedescription pid process target process PID 736 wrote to memory of 1632 736 a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe System.exe PID 736 wrote to memory of 1632 736 a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe System.exe PID 736 wrote to memory of 1632 736 a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe System.exe PID 736 wrote to memory of 1632 736 a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe System.exe PID 1632 wrote to memory of 2040 1632 System.exe netsh.exe PID 1632 wrote to memory of 2040 1632 System.exe netsh.exe PID 1632 wrote to memory of 2040 1632 System.exe netsh.exe PID 1632 wrote to memory of 2040 1632 System.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe"C:\Users\Admin\AppData\Local\Temp\a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f.exe"1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\Windows\System.exe"C:\Windows\System.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\System.exe" "System.exe" ENABLE3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Windows\System.exeFilesize
37KB
MD50cec5dc459979d97901084deeb06c866
SHA11af8b020f6d9f4e66f03289985e2ef4436c193b2
SHA256a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f
SHA51268b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7
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C:\Windows\System.exeFilesize
37KB
MD50cec5dc459979d97901084deeb06c866
SHA11af8b020f6d9f4e66f03289985e2ef4436c193b2
SHA256a51ef1477babc5f015f255e818d9b8b733da44913dc69f8e7d23611c0a33554f
SHA51268b363ad3c9a45cce08781200d519ca6b57acc55726eb7df7c1444aaf7ba777b0f0196ccdb26d88b38ae7f01e37885cb6b52427021c5410b39e3164f44ca21a7
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memory/736-54-0x0000000076851000-0x0000000076853000-memory.dmpFilesize
8KB
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memory/736-55-0x0000000075000000-0x00000000755AB000-memory.dmpFilesize
5.7MB
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memory/1632-56-0x0000000000000000-mapping.dmp
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memory/1632-60-0x0000000075000000-0x00000000755AB000-memory.dmpFilesize
5.7MB
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memory/2040-61-0x0000000000000000-mapping.dmp