Analysis
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max time kernel
150s -
max time network
146s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
17-12-2024 22:08
Behavioral task
behavioral1
Sample
4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe
Resource
win7-20241010-en
windows7-x64
16 signatures
150 seconds
Behavioral task
behavioral2
Sample
4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
14 signatures
150 seconds
General
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Target
4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe
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Size
212KB
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MD5
fbda28e2485a2eb1f2f9fa74ac9930a4
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SHA1
28cbb5ad506e9b59ce95444a04b54db4e85b55da
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SHA256
4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec
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SHA512
ada222650ee257053b2e767f93d5b36f8f8cb0a95d64706f7e2c9c7dd402822020f6d474570294c31965181dad561c05164a262823fac3a654913d801fc06bea
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SSDEEP
1536:e72n8wiGoeA+gRJNR/iWjxABUDQdiltq7ll9mhig+4PUPcHJ4OAI9ntxQLqE8a:e728wT6+yJr/W76Fxjphtg
Malware Config
Extracted
Family
njrat
Version
im523
Botnet
HacKed
C2
90.188.9.30:80
Mutex
8be188054a9ab6b55d511cab5b851af9
Attributes
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reg_key
8be188054a9ab6b55d511cab5b851af9
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splitter
|'|'|
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2692 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8be188054a9ab6b55d511cab5b851af9.exe Akshnav.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8be188054a9ab6b55d511cab5b851af9.exe Akshnav.exe -
Executes dropped EXE 1 IoCs
pid Process 3020 Akshnav.exe -
Loads dropped DLL 1 IoCs
pid Process 2860 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\8be188054a9ab6b55d511cab5b851af9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Akshnav.exe\" .." Akshnav.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8be188054a9ab6b55d511cab5b851af9 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Akshnav.exe\" .." Akshnav.exe -
Drops autorun.inf file 1 TTPs 5 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File created C:\autorun.inf Akshnav.exe File opened for modification C:\autorun.inf Akshnav.exe File created D:\autorun.inf Akshnav.exe File created F:\autorun.inf Akshnav.exe File opened for modification F:\autorun.inf Akshnav.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 4 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 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Akshnav.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe -
Kills process with taskkill 1 IoCs
pid Process 1780 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe 3020 Akshnav.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3020 Akshnav.exe -
Suspicious use of AdjustPrivilegeToken 36 IoCs
description pid Process Token: SeDebugPrivilege 3020 Akshnav.exe Token: SeDebugPrivilege 1780 taskkill.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe Token: 33 3020 Akshnav.exe Token: SeIncBasePriorityPrivilege 3020 Akshnav.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2860 wrote to memory of 3020 2860 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe 30 PID 2860 wrote to memory of 3020 2860 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe 30 PID 2860 wrote to memory of 3020 2860 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe 30 PID 2860 wrote to memory of 3020 2860 4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe 30 PID 3020 wrote to memory of 2692 3020 Akshnav.exe 31 PID 3020 wrote to memory of 2692 3020 Akshnav.exe 31 PID 3020 wrote to memory of 2692 3020 Akshnav.exe 31 PID 3020 wrote to memory of 2692 3020 Akshnav.exe 31 PID 3020 wrote to memory of 1780 3020 Akshnav.exe 33 PID 3020 wrote to memory of 1780 3020 Akshnav.exe 33 PID 3020 wrote to memory of 1780 3020 Akshnav.exe 33 PID 3020 wrote to memory of 1780 3020 Akshnav.exe 33
Processes
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C:\Users\Admin\AppData\Local\Temp\4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe"C:\Users\Admin\AppData\Local\Temp\4638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860 -
C:\Users\Admin\AppData\Local\Temp\Akshnav.exe"C:\Users\Admin\AppData\Local\Temp\Akshnav.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Akshnav.exe" "Akshnav.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2692
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM Exsample.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1780
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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
212KB
MD5fbda28e2485a2eb1f2f9fa74ac9930a4
SHA128cbb5ad506e9b59ce95444a04b54db4e85b55da
SHA2564638b59fa78b904822efb4ff8b4f385b40f49274f4c26eae0e7e246a372ecfec
SHA512ada222650ee257053b2e767f93d5b36f8f8cb0a95d64706f7e2c9c7dd402822020f6d474570294c31965181dad561c05164a262823fac3a654913d801fc06bea