Analysis
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max time kernel
150s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-12-2024 06:19
Behavioral task
behavioral1
Sample
njSilent.exe
Resource
win7-20240903-en
windows7-x64
Behavioral task
behavioral2
Sample
njSilent.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
General
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Target
njSilent.exe
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Size
37KB
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MD5
e20a459e155e9860e8a00f4d4a6015bf
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SHA1
982fe6b24779fa4a64a154947aca4d5615a7af86
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SHA256
d6ee68c0057fd95a29a2f112c19cb556837eff859071827bc5d37069742d96cc
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SHA512
381a3c27328e30a06125c2fa45334ca84aaff7904afb032e4fd6dec1474179787f0d87e93804b7b79e74987e2977ea19d64de05872c7f4fe1ca818199ed30d02
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SSDEEP
384:cmnJMiLrBndznNCyMGmPiePDUcmk3lsrAF+rMRTyN/0L+EcoinblneHQM3epzX0O:Rn9RNRMGmPPg1kVsrM+rMRa8NuS6Jt
Malware Config
Extracted
njrat
im523
pakEt
condition-clearance.gl.at.ply.gg:7070
9d3a575fdcc2dd1782d18ac5655a8b28
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reg_key
9d3a575fdcc2dd1782d18ac5655a8b28
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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 2748 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9d3a575fdcc2dd1782d18ac5655a8b28.exe svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9d3a575fdcc2dd1782d18ac5655a8b28.exe svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3032 svchost.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\9d3a575fdcc2dd1782d18ac5655a8b28 = "\"C:\\Windows\\svchost.exe\" .." svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\9d3a575fdcc2dd1782d18ac5655a8b28 = "\"C:\\Windows\\svchost.exe\" .." svchost.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 svchost.exe File opened for modification C:\autorun.inf svchost.exe File created D:\autorun.inf svchost.exe File created F:\autorun.inf svchost.exe File opened for modification F:\autorun.inf svchost.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File created C:\Windows\svchost.exe njSilent.exe File opened for modification C:\Windows\svchost.exe njSilent.exe File opened for modification C:\Windows\svchost.exe svchost.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 njSilent.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe 3032 svchost.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3032 svchost.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe Token: 33 3032 svchost.exe Token: SeIncBasePriorityPrivilege 3032 svchost.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1724 wrote to memory of 3032 1724 njSilent.exe 31 PID 1724 wrote to memory of 3032 1724 njSilent.exe 31 PID 1724 wrote to memory of 3032 1724 njSilent.exe 31 PID 1724 wrote to memory of 3032 1724 njSilent.exe 31 PID 3032 wrote to memory of 2748 3032 svchost.exe 32 PID 3032 wrote to memory of 2748 3032 svchost.exe 32 PID 3032 wrote to memory of 2748 3032 svchost.exe 32 PID 3032 wrote to memory of 2748 3032 svchost.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\njSilent.exe"C:\Users\Admin\AppData\Local\Temp\njSilent.exe"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Windows\svchost.exe"C:\Windows\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\svchost.exe" "svchost.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2748
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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
Loading Replay Monitor...
Downloads
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Filesize
37KB
MD5e20a459e155e9860e8a00f4d4a6015bf
SHA1982fe6b24779fa4a64a154947aca4d5615a7af86
SHA256d6ee68c0057fd95a29a2f112c19cb556837eff859071827bc5d37069742d96cc
SHA512381a3c27328e30a06125c2fa45334ca84aaff7904afb032e4fd6dec1474179787f0d87e93804b7b79e74987e2977ea19d64de05872c7f4fe1ca818199ed30d02