Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
12-12-2024 04:54
Behavioral task
behavioral1
Sample
f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe
Resource
win10v2004-20241007-en
General
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Target
f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe
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Size
23KB
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MD5
e99ba45c0b874c8699b7799a7b74ac44
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SHA1
15f2db71c080c74ce9a7d31a0463d831f98a8b4f
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SHA256
f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4
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SHA512
3c64b42beae02caf5b53882b88aea813136f0654a0bc2f3e89718bc6d14845504cd68cef500db0e760ede31aabe0a274c27e130443f7a8fb8357dd347354a165
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SSDEEP
384:QoWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZIe:f7O89p2rRpcnuQ
Malware Config
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2128 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe -
Executes dropped EXE 1 IoCs
pid Process 1408 server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe Token: 33 1408 server.exe Token: SeIncBasePriorityPrivilege 1408 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2524 wrote to memory of 1408 2524 f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe 82 PID 2524 wrote to memory of 1408 2524 f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe 82 PID 2524 wrote to memory of 1408 2524 f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe 82 PID 1408 wrote to memory of 2128 1408 server.exe 88 PID 1408 wrote to memory of 2128 1408 server.exe 88 PID 1408 wrote to memory of 2128 1408 server.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe"C:\Users\Admin\AppData\Local\Temp\f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524 -
C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1408 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2128
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
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Filesize
23KB
MD5e99ba45c0b874c8699b7799a7b74ac44
SHA115f2db71c080c74ce9a7d31a0463d831f98a8b4f
SHA256f62f7ccab9b9dc9e6876a65cdad855382a535adf3a189be8f4cab9180e51a4d4
SHA5123c64b42beae02caf5b53882b88aea813136f0654a0bc2f3e89718bc6d14845504cd68cef500db0e760ede31aabe0a274c27e130443f7a8fb8357dd347354a165