Analysis
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max time kernel
209s -
max time network
207s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
20-07-2024 11:19
Behavioral task
behavioral1
Sample
Server.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
Server.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
Server.exe
Resource
win10v2004-20240709-en
Behavioral task
behavioral4
Sample
Server.exe
Resource
win11-20240709-en
General
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Target
Server.exe
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Size
36KB
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MD5
83d83edd49fbe175f330b855135b7812
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SHA1
7a88ba7b0b6f44af5945ee5aa0494f84b0b78e25
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SHA256
f67be796c76c62a9b4763403ebbb62ceb07d567f1c76386445fb99b7f807d46d
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SHA512
9a66de9e038234a36b8b3912ebe931c4fc0d839fb71bbd95014e3fbd4ebaeeda45fd2ed462e18cdef1edf2a9247b04ee90e1d185020a789457b01b90e3f4fd71
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SSDEEP
384:bv5Zjj6icFri5Z7JAyk/G4OvhRZea6FwrAF+rMRTyN/0L+EcoinblneHQM3epzXb:z5LHJ7k/G4ObZr6GrM+rMRa8NuZ9Pt
Malware Config
Extracted
njrat
im523
ضحايا Repo
147.185.221.21:19455
ff08ef465dd80a9af68f3e1ab659a49e
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reg_key
ff08ef465dd80a9af68f3e1ab659a49e
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4432 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ff08ef465dd80a9af68f3e1ab659a49e.exe System.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ff08ef465dd80a9af68f3e1ab659a49e.exe System.exe -
Executes dropped EXE 1 IoCs
pid Process 164 System.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\ff08ef465dd80a9af68f3e1ab659a49e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ff08ef465dd80a9af68f3e1ab659a49e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." System.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 System.exe File opened for modification C:\autorun.inf System.exe File created D:\autorun.inf System.exe File created F:\autorun.inf System.exe File opened for modification F:\autorun.inf System.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 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe 164 System.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 164 System.exe -
Suspicious use of AdjustPrivilegeToken 49 IoCs
description pid Process Token: SeDebugPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe Token: 33 164 System.exe Token: SeIncBasePriorityPrivilege 164 System.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3012 wrote to memory of 164 3012 Server.exe 74 PID 3012 wrote to memory of 164 3012 Server.exe 74 PID 3012 wrote to memory of 164 3012 Server.exe 74 PID 164 wrote to memory of 4432 164 System.exe 75 PID 164 wrote to memory of 4432 164 System.exe 75 PID 164 wrote to memory of 4432 164 System.exe 75
Processes
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C:\Users\Admin\AppData\Local\Temp\Server.exe"C:\Users\Admin\AppData\Local\Temp\Server.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3012 -
C:\Users\Admin\AppData\Local\Temp\System.exe"C:\Users\Admin\AppData\Local\Temp\System.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:164 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:4432
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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
1Replay Monitor
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Downloads
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Filesize
36KB
MD583d83edd49fbe175f330b855135b7812
SHA17a88ba7b0b6f44af5945ee5aa0494f84b0b78e25
SHA256f67be796c76c62a9b4763403ebbb62ceb07d567f1c76386445fb99b7f807d46d
SHA5129a66de9e038234a36b8b3912ebe931c4fc0d839fb71bbd95014e3fbd4ebaeeda45fd2ed462e18cdef1edf2a9247b04ee90e1d185020a789457b01b90e3f4fd71