Analysis
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max time kernel
113s -
max time network
117s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-12-2024 06:04
Static task
static1
Behavioral task
behavioral1
Sample
7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
Resource
win10v2004-20241007-en
General
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Target
7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe
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Size
1.2MB
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MD5
0892da2c8fbf043ae276100f9c7ec8ba
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SHA1
7237c52c96efcfa0105f0cdaf37245f0b29685de
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SHA256
7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708
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SHA512
c547262992a16e873c39997f6e892d0959474efc78d99330160fa82621a732f297100fe73ecb3d520e4053087bbd9428f11be695d8f83c02a08be3dd010bc77e
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SSDEEP
24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX95G:Jh+ZkldoPK8YaW7CaZ7IHG
Malware Config
Extracted
njrat
0.7d
redlanhopto
redlan.hopto.org:5553
d25d360449d7bab3069e1b77b3a914a3
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reg_key
d25d360449d7bab3069e1b77b3a914a3
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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 4452 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe -
Executes dropped EXE 1 IoCs
pid Process 1844 data.exe -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/files/0x0008000000023cab-14.dat autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2396 set thread context of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 -
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 5 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 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language data.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 5028 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 1844 data.exe 1844 data.exe 1844 data.exe 1844 data.exe -
Suspicious use of AdjustPrivilegeToken 19 IoCs
description pid Process Token: SeDebugPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe Token: 33 3828 RegAsm.exe Token: SeIncBasePriorityPrivilege 3828 RegAsm.exe -
Suspicious use of FindShellTrayWindow 6 IoCs
pid Process 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 1844 data.exe 1844 data.exe 1844 data.exe -
Suspicious use of SendNotifyMessage 6 IoCs
pid Process 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 1844 data.exe 1844 data.exe 1844 data.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2396 wrote to memory of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 PID 2396 wrote to memory of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 PID 2396 wrote to memory of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 PID 2396 wrote to memory of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 PID 2396 wrote to memory of 3828 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 99 PID 3828 wrote to memory of 4452 3828 RegAsm.exe 101 PID 3828 wrote to memory of 4452 3828 RegAsm.exe 101 PID 3828 wrote to memory of 4452 3828 RegAsm.exe 101 PID 2396 wrote to memory of 5028 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 104 PID 2396 wrote to memory of 5028 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 104 PID 2396 wrote to memory of 5028 2396 7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe 104
Processes
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C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe"C:\Users\Admin\AppData\Local\Temp\7dc6f983812204ae8a4f6fdc87c0b068c562dee184b268e04391975c582be708.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2396 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3828 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe" "RegAsm.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:4452
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\SysWOW64\schtasks.exe" /create /tn igfxHK /tr "C:\Users\Admin\AppData\Roaming\chkdsk\data.exe" /sc minute /mo 1 /F2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:5028
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C:\Users\Admin\AppData\Roaming\chkdsk\data.exeC:\Users\Admin\AppData\Roaming\chkdsk\data.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1844
Network
MITRE ATT&CK Enterprise v15
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
1.2MB
MD54266c60923b00023e335c3e279a99dd0
SHA16191a020c49a3e3638dbe0a36d038336d09331be
SHA2564419a910fd508ff7e29e91c58d3347aaa8b86a961e2852385dde81235e1e99d1
SHA51222f68bf19aac98366f410510ba805fc0d8e7fcd376909adf7fdfeda5733914dddde2b014e40dcc17ca1fa5f828f569c1643231e9ca2a8492b6a9c92866462a52