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Analysis
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max time kernel
120s -
max time network
115s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31/12/2024, 06:00
Behavioral task
behavioral1
Sample
11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe
Resource
win10v2004-20241007-en
General
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Target
11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe
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Size
23KB
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MD5
8ff0da747c6d0e9870cb9ce91b951160
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SHA1
5c645d5eed1c2fa4ce5e9ba4ecc405915a71c579
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SHA256
11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191b
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SHA512
9cfa1c4e7089903a37eebdefd4303e283cf2b3b19a185b9ca9128c6d7cda3bb3a83ac82815a64dba002bc198c36598473c62db3f4ce6cca45d9e24d1dd54a1fa
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SSDEEP
384:4sqS+ER6vRKXGYKRWVSujUtX9w6Dglo61Z5DVmRvR6JZlbw8hqIusZzZpF:vf65K2Yf1jKRpcnuw
Malware Config
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4828 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 11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe -
Executes dropped EXE 1 IoCs
pid Process 544 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\41e37e0e68c4601548177f4056648eeb = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\41e37e0e68c4601548177f4056648eeb = "\"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 value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \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 11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.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 27 IoCs
description pid Process Token: SeDebugPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe Token: 33 544 server.exe Token: SeIncBasePriorityPrivilege 544 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3440 wrote to memory of 544 3440 11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe 86 PID 3440 wrote to memory of 544 3440 11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe 86 PID 3440 wrote to memory of 544 3440 11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe 86 PID 544 wrote to memory of 4828 544 server.exe 90 PID 544 wrote to memory of 4828 544 server.exe 90 PID 544 wrote to memory of 4828 544 server.exe 90
Processes
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C:\Users\Admin\AppData\Local\Temp\11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe"C:\Users\Admin\AppData\Local\Temp\11651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191bN.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3440 -
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:544 -
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:4828
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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
MD58ff0da747c6d0e9870cb9ce91b951160
SHA15c645d5eed1c2fa4ce5e9ba4ecc405915a71c579
SHA25611651e832cac06016c2b253573e2eabb93d2cc3553e8d58bf3133c09ed44191b
SHA5129cfa1c4e7089903a37eebdefd4303e283cf2b3b19a185b9ca9128c6d7cda3bb3a83ac82815a64dba002bc198c36598473c62db3f4ce6cca45d9e24d1dd54a1fa