Analysis
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max time kernel
150s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
13-10-2022 15:00
Behavioral task
behavioral1
Sample
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe
Resource
win10v2004-20220901-en
General
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Target
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe
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Size
23KB
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MD5
68ece29504c74f8c02b92fbd571e7e30
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SHA1
708a03ba6e6f45c4bd78cb919914b1bf2484f950
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SHA256
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb
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SHA512
0b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7
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SSDEEP
384:UMqYmCsg/yJrQ7hucGSl7UJ/4g6JgfCcosjddmRvR6JZlbw8hqIusZzZ2U:UErG0Btl7xRpcnuE
Malware Config
Extracted
njrat
0.7d
hacker
127.0.0.1:5552
d68b61967d730acfe0a71857bf39dadc
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reg_key
d68b61967d730acfe0a71857bf39dadc
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
system.exepid process 1952 system.exe -
Modifies Windows Firewall 1 TTPs 1 IoCs
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Drops startup file 2 IoCs
Processes:
system.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d68b61967d730acfe0a71857bf39dadc.exe system.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d68b61967d730acfe0a71857bf39dadc.exe system.exe -
Loads dropped DLL 1 IoCs
Processes:
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exepid process 1480 f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
system.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\d68b61967d730acfe0a71857bf39dadc = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .." system.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\d68b61967d730acfe0a71857bf39dadc = "\"C:\\Users\\Admin\\AppData\\Roaming\\system.exe\" .." system.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 19 IoCs
Processes:
system.exedescription pid process Token: SeDebugPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe Token: 33 1952 system.exe Token: SeIncBasePriorityPrivilege 1952 system.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exesystem.exedescription pid process target process PID 1480 wrote to memory of 1952 1480 f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe system.exe PID 1480 wrote to memory of 1952 1480 f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe system.exe PID 1480 wrote to memory of 1952 1480 f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe system.exe PID 1480 wrote to memory of 1952 1480 f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe system.exe PID 1952 wrote to memory of 1324 1952 system.exe netsh.exe PID 1952 wrote to memory of 1324 1952 system.exe netsh.exe PID 1952 wrote to memory of 1324 1952 system.exe netsh.exe PID 1952 wrote to memory of 1324 1952 system.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe"C:\Users\Admin\AppData\Local\Temp\f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\system.exe"C:\Users\Admin\AppData\Roaming\system.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\Roaming\system.exe" "system.exe" ENABLE3⤵
- Modifies Windows Firewall
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\system.exeFilesize
23KB
MD568ece29504c74f8c02b92fbd571e7e30
SHA1708a03ba6e6f45c4bd78cb919914b1bf2484f950
SHA256f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb
SHA5120b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7
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C:\Users\Admin\AppData\Roaming\system.exeFilesize
23KB
MD568ece29504c74f8c02b92fbd571e7e30
SHA1708a03ba6e6f45c4bd78cb919914b1bf2484f950
SHA256f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb
SHA5120b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7
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\Users\Admin\AppData\Roaming\system.exeFilesize
23KB
MD568ece29504c74f8c02b92fbd571e7e30
SHA1708a03ba6e6f45c4bd78cb919914b1bf2484f950
SHA256f9e9c52ea69950a9c019b2fdb616716f92daa32397aa65da38f7bf7c586527eb
SHA5120b43bc2fd13ecc27801df2a5f462409a3c7753fa29b571cb4c48fd475587636d56546a5b69d0626a0c4e51a4fd893509d311927a5950eccba90e51ade55dffe7
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memory/1324-63-0x0000000000000000-mapping.dmp
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memory/1480-54-0x0000000076201000-0x0000000076203000-memory.dmpFilesize
8KB
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memory/1480-55-0x0000000074350000-0x00000000748FB000-memory.dmpFilesize
5.7MB
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memory/1480-61-0x0000000074350000-0x00000000748FB000-memory.dmpFilesize
5.7MB
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memory/1952-57-0x0000000000000000-mapping.dmp
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memory/1952-62-0x0000000074350000-0x00000000748FB000-memory.dmpFilesize
5.7MB
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memory/1952-65-0x0000000074350000-0x00000000748FB000-memory.dmpFilesize
5.7MB