Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11-12-2024 23:40
Static task
static1
Behavioral task
behavioral1
Sample
800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
Resource
win10v2004-20241007-en
General
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Target
800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe
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Size
1.2MB
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MD5
f45dfec03714aad85cae5ada0ea1f104
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SHA1
d1f589ed4e83dd4d1ff28c29433cdf9b5c944d88
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SHA256
800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c
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SHA512
1175cdd12c7ac6ff29be17097dc0e604f89c7550068ee41f3ecfe8daa89cde813269ad1e432bcf6640c57313ba86dd8c92223fceaf4bbaafa8572a789ea19f33
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SSDEEP
24576:eAHnh+eWsN3skA4RV1Hom2KXMmHaW7aWvCaFg5a7PCmWX950:Jh+ZkldoPK8YaW7CaZ7IH0
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 5000 netsh.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation data.exe -
Executes dropped EXE 2 IoCs
pid Process 1504 data.exe 1672 data.exe -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/files/0x0009000000023bdd-14.dat autoit_exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4708 set thread context of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 1504 set thread context of 1564 1504 data.exe 97 -
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 8 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 schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language data.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language data.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegAsm.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4780 schtasks.exe 2800 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 12 IoCs
pid Process 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 1504 data.exe 1504 data.exe 1504 data.exe 1504 data.exe 1672 data.exe 1672 data.exe 1672 data.exe 1672 data.exe -
Suspicious use of AdjustPrivilegeToken 27 IoCs
description pid Process Token: SeDebugPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe Token: 33 3412 RegAsm.exe Token: SeIncBasePriorityPrivilege 3412 RegAsm.exe -
Suspicious use of FindShellTrayWindow 9 IoCs
pid Process 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 1504 data.exe 1504 data.exe 1504 data.exe 1672 data.exe 1672 data.exe 1672 data.exe -
Suspicious use of SendNotifyMessage 9 IoCs
pid Process 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 1504 data.exe 1504 data.exe 1504 data.exe 1672 data.exe 1672 data.exe 1672 data.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 4708 wrote to memory of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 4708 wrote to memory of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 4708 wrote to memory of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 4708 wrote to memory of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 4708 wrote to memory of 3412 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 91 PID 3412 wrote to memory of 5000 3412 RegAsm.exe 92 PID 3412 wrote to memory of 5000 3412 RegAsm.exe 92 PID 3412 wrote to memory of 5000 3412 RegAsm.exe 92 PID 4708 wrote to memory of 2800 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 94 PID 4708 wrote to memory of 2800 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 94 PID 4708 wrote to memory of 2800 4708 800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe 94 PID 1504 wrote to memory of 1564 1504 data.exe 97 PID 1504 wrote to memory of 1564 1504 data.exe 97 PID 1504 wrote to memory of 1564 1504 data.exe 97 PID 1504 wrote to memory of 1564 1504 data.exe 97 PID 1504 wrote to memory of 1564 1504 data.exe 97 PID 1504 wrote to memory of 4780 1504 data.exe 98 PID 1504 wrote to memory of 4780 1504 data.exe 98 PID 1504 wrote to memory of 4780 1504 data.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.exe"C:\Users\Admin\AppData\Local\Temp\800f43358964117f685e3548d0a71d7d519131c3dff3cbf9fe2efb38d29c687c.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:4708 -
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:3412 -
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:5000
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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:2800
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C:\Users\Admin\AppData\Roaming\chkdsk\data.exeC:\Users\Admin\AppData\Roaming\chkdsk\data.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- 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:1504 -
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
PID:1564
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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:4780
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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:1672
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
MD573f67617cd184818deeb3fb9aac5046e
SHA1291fea3790800c8f285430b633e86396da6d07c9
SHA256bde3fded70b99fbecfdee2423e7e82c5933c471ba97310e5880818439fde7312
SHA512cfb6c1d567ad657c58f9bf8a5a845ee3702902820f1138515009e298170d7c0deae853f03143664c661f668166733039f39ad474257a23a0919e8ce620060ae6