Analysis
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max time kernel
119s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
03-11-2024 05:41
Behavioral task
behavioral1
Sample
c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
Resource
win10v2004-20241007-en
General
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Target
c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe
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Size
23KB
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MD5
ff2c4f921fab4f4900acb9c9fecb6ec0
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SHA1
e385387ead5c0f7c626de00fb716dea1c6e8e9e3
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SHA256
c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366
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SHA512
5a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e
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SSDEEP
384:kslUlEvOEJ8xWwYJOMiOBZEdj1567gtwi5HhbQmRvR6JZlbw8hqIusZzZif:teEvwIlLMRpcnuH
Malware Config
Extracted
njrat
0.7d
HacKed
192.168.1.5:5552
7c2c57ac23031a96b734c5b4f1cc3f93
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reg_key
7c2c57ac23031a96b734c5b4f1cc3f93
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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 2796 netsh.exe -
Executes dropped EXE 1 IoCs
pid Process 2792 server.exe -
Loads dropped DLL 1 IoCs
pid Process 2612 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\7c2c57ac23031a96b734c5b4f1cc3f93 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\7c2c57ac23031a96b734c5b4f1cc3f93 = "\"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 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.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 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe Token: 33 2792 server.exe Token: SeIncBasePriorityPrivilege 2792 server.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2612 wrote to memory of 2792 2612 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe 30 PID 2612 wrote to memory of 2792 2612 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe 30 PID 2612 wrote to memory of 2792 2612 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe 30 PID 2612 wrote to memory of 2792 2612 c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe 30 PID 2792 wrote to memory of 2796 2792 server.exe 31 PID 2792 wrote to memory of 2796 2792 server.exe 31 PID 2792 wrote to memory of 2796 2792 server.exe 31 PID 2792 wrote to memory of 2796 2792 server.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe"C:\Users\Admin\AppData\Local\Temp\c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366N.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2612 -
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:2792 -
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:2796
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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
MD5ff2c4f921fab4f4900acb9c9fecb6ec0
SHA1e385387ead5c0f7c626de00fb716dea1c6e8e9e3
SHA256c4a53d553617754a4cd39cc3a0f66aa2d5302a549f7562b04774732231534366
SHA5125a34cf6ad696b41e8b0d3d2272c214673ed5ed1aa0c6560793bcb4a2cc6646c8d8d419a557a7a4a46e2f2447568110b3cd9aaa36737d6061e6653ebbeee38e8e