Analysis
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max time kernel
150s -
max time network
137s -
platform
windows7_x64 -
resource
win7-20220718-en -
resource tags
arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system -
submitted
06-08-2022 18:26
Behavioral task
behavioral1
Sample
Serveftgr.exe
Resource
win7-20220718-en
General
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Target
Serveftgr.exe
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Size
93KB
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MD5
97266b25a791e68493ea2563306c7cf0
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SHA1
d161fff47235e7d60209b6feae74019e6d000297
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SHA256
f9dfaeff5fd22709b5cd29cb23c6f7c81f392f3a2d88c2bcf09fb4b599fb6f30
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SHA512
9eac60682d5ce4398dfd45449fde4272cba942fa01afe7034ef0b1393605f7a65997a52c9ae960d87d973dab1c9c2f0dfa339ae921470664f241a71cc9d82d09
Malware Config
Extracted
njrat
0.7d
HacKed
c3VzaWFoYXQyNDE5OWEuZGRucy5uZXQStrik:NTU1Mg==
a8f08fa23dbc544d76787e679872404a
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reg_key
a8f08fa23dbc544d76787e679872404a
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splitter
|'|'|
Signatures
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Executes dropped EXE 1 IoCs
Processes:
server.exepid process 1728 server.exe -
Modifies Windows Firewall 1 TTPs 3 IoCs
Processes:
netsh.exenetsh.exenetsh.exepid process 1676 netsh.exe 1768 netsh.exe 1328 netsh.exe -
Drops startup file 6 IoCs
Processes:
server.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe server.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a8f08fa23dbc544d76787e679872404aWindows Update.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a8f08fa23dbc544d76787e679872404aWindows Update.exe server.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explorer.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explorer.exe server.exe -
Loads dropped DLL 2 IoCs
Processes:
Serveftgr.exepid process 1616 Serveftgr.exe 1616 Serveftgr.exe -
Drops file in System32 directory 1 IoCs
Processes:
server.exedescription ioc process File created C:\Windows\SysWOW64\Explorer.exe server.exe -
Drops file in Program Files directory 2 IoCs
Processes:
server.exedescription ioc process File opened for modification C:\Program Files (x86)\Explorer.exe server.exe File created C:\Program Files (x86)\Explorer.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 behavior: EnumeratesProcesses 64 IoCs
Processes:
server.exepid process 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe 1728 server.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
server.exepid process 1728 server.exe -
Suspicious use of AdjustPrivilegeToken 21 IoCs
Processes:
server.exedescription pid process Token: SeDebugPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe Token: 33 1728 server.exe Token: SeIncBasePriorityPrivilege 1728 server.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
Serveftgr.exeserver.exedescription pid process target process PID 1616 wrote to memory of 1728 1616 Serveftgr.exe server.exe PID 1616 wrote to memory of 1728 1616 Serveftgr.exe server.exe PID 1616 wrote to memory of 1728 1616 Serveftgr.exe server.exe PID 1616 wrote to memory of 1728 1616 Serveftgr.exe server.exe PID 1728 wrote to memory of 1676 1728 server.exe netsh.exe PID 1728 wrote to memory of 1676 1728 server.exe netsh.exe PID 1728 wrote to memory of 1676 1728 server.exe netsh.exe PID 1728 wrote to memory of 1676 1728 server.exe netsh.exe PID 1728 wrote to memory of 1768 1728 server.exe netsh.exe PID 1728 wrote to memory of 1768 1728 server.exe netsh.exe PID 1728 wrote to memory of 1768 1728 server.exe netsh.exe PID 1728 wrote to memory of 1768 1728 server.exe netsh.exe PID 1728 wrote to memory of 1328 1728 server.exe netsh.exe PID 1728 wrote to memory of 1328 1728 server.exe netsh.exe PID 1728 wrote to memory of 1328 1728 server.exe netsh.exe PID 1728 wrote to memory of 1328 1728 server.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Serveftgr.exe"C:\Users\Admin\AppData\Local\Temp\Serveftgr.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
- Drops startup file
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- 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
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C:\Windows\SysWOW64\netsh.exenetsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"3⤵
- Modifies Windows Firewall
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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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
93KB
MD597266b25a791e68493ea2563306c7cf0
SHA1d161fff47235e7d60209b6feae74019e6d000297
SHA256f9dfaeff5fd22709b5cd29cb23c6f7c81f392f3a2d88c2bcf09fb4b599fb6f30
SHA5129eac60682d5ce4398dfd45449fde4272cba942fa01afe7034ef0b1393605f7a65997a52c9ae960d87d973dab1c9c2f0dfa339ae921470664f241a71cc9d82d09
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C:\Users\Admin\AppData\Local\Temp\server.exeFilesize
93KB
MD597266b25a791e68493ea2563306c7cf0
SHA1d161fff47235e7d60209b6feae74019e6d000297
SHA256f9dfaeff5fd22709b5cd29cb23c6f7c81f392f3a2d88c2bcf09fb4b599fb6f30
SHA5129eac60682d5ce4398dfd45449fde4272cba942fa01afe7034ef0b1393605f7a65997a52c9ae960d87d973dab1c9c2f0dfa339ae921470664f241a71cc9d82d09
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C:\Users\Admin\AppData\Roaming\appFilesize
4B
MD53eb8a6afa534fadc147aa70dea76e863
SHA103b827d99098f69c9f126679598f7166c99d1624
SHA256d3d1d98df443947ab0b52378acbb5f5c21593677b45f0403b3831c93d8be7fca
SHA512b9d20e1f18dd2dc9a71e436e5c27854196f1f8f0adfbf59aed9d70ab83b88c2c39958720508e87d98f8cb23dcb7bbaa81825406439edcc07b6d2ee310acd4327
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\Users\Admin\AppData\Local\Temp\server.exeFilesize
93KB
MD597266b25a791e68493ea2563306c7cf0
SHA1d161fff47235e7d60209b6feae74019e6d000297
SHA256f9dfaeff5fd22709b5cd29cb23c6f7c81f392f3a2d88c2bcf09fb4b599fb6f30
SHA5129eac60682d5ce4398dfd45449fde4272cba942fa01afe7034ef0b1393605f7a65997a52c9ae960d87d973dab1c9c2f0dfa339ae921470664f241a71cc9d82d09
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\Users\Admin\AppData\Local\Temp\server.exeFilesize
93KB
MD597266b25a791e68493ea2563306c7cf0
SHA1d161fff47235e7d60209b6feae74019e6d000297
SHA256f9dfaeff5fd22709b5cd29cb23c6f7c81f392f3a2d88c2bcf09fb4b599fb6f30
SHA5129eac60682d5ce4398dfd45449fde4272cba942fa01afe7034ef0b1393605f7a65997a52c9ae960d87d973dab1c9c2f0dfa339ae921470664f241a71cc9d82d09
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memory/1328-68-0x0000000000000000-mapping.dmp
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memory/1616-55-0x0000000073EB0000-0x000000007445B000-memory.dmpFilesize
5.7MB
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memory/1616-54-0x00000000758B1000-0x00000000758B3000-memory.dmpFilesize
8KB
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memory/1616-62-0x0000000073EB0000-0x000000007445B000-memory.dmpFilesize
5.7MB
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memory/1676-65-0x0000000000000000-mapping.dmp
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memory/1728-58-0x0000000000000000-mapping.dmp
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memory/1728-64-0x0000000073EB0000-0x000000007445B000-memory.dmpFilesize
5.7MB
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memory/1728-71-0x0000000073EB0000-0x000000007445B000-memory.dmpFilesize
5.7MB
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memory/1768-67-0x0000000000000000-mapping.dmp