Analysis
- user interaction
yes - max time kernel
24s - max time network
26s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows - submitted
14/08/2026, 03:47
Static task
static1
Behavioral task
behavioral1
Sample
omesfn.exe
Resource
win10ltsc2021-20260513-en
General
- Target omesfn.exe
- Size 16.8MB
- Sample260814-eck7safa53
- SHA256 91b740341c9261688ca666bf5677b521cf4c6a1c1d3b29a185f3019f42ce7bc7
- MD5 1e4a82c39d96877127fe37d41bbb1993
- SHA1 8299ff07c74df498a3dcb2c6a139338f7232bd99
- SHA512 325608cc436845f37f3a1bd0940775535cd8f86927b85cadaf66362f75290085646cb1bc9545b1fc26321ba568d45835a2f2fefcb8e4e59a2ac304eddb671230
- SSDEEP 393216:ny82KOJUD4nZc4BuDVvPEPpQ9CVbWOs0eN:ROJnVu1PnmWOsD
- TLSH T1180733425E103F79C65037BF539AD21A13907462F66C3817D4F78BA623CE5E052D3EAA
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
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njrat
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0.7d
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HacKed
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hakim32.ddns.net:2000
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fds6gbae3v.localto.net:4294
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b9c3a6c98ae0f4ff9d14378e06801af9
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reg_key
b9c3a6c98ae0f4ff9d14378e06801af9
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splitter
|'|'|
Signatures
- Modifies Windows Firewall 2 TTPs 3 IoCs
pid Process 832 netsh.exe 2172 netsh.exe 3516 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-1-5-21-3054922120-1500138384-519748408-1000\Control Panel\International\Geo\Nation omesfn.exe Key value queried \REGISTRY\USER\S-1-5-21-3054922120-1500138384-519748408-1000\Control Panel\International\Geo\Nation omesf.exe - Executes dropped EXE 3 IoCs
pid Process 3060 omesfn.exe 4184 omesf.exe 2540 server.exe - Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
- Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\server.exe omesf.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 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 queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \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 Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \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 omesf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 928 powershell.exe 928 powershell.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe 2540 server.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2540 server.exe - Suspicious use of AdjustPrivilegeToken 25 IoCs
description pid Process Token: SeDebugPrivilege 928 powershell.exe Token: SeIncreaseQuotaPrivilege 928 powershell.exe Token: SeSecurityPrivilege 928 powershell.exe Token: SeTakeOwnershipPrivilege 928 powershell.exe Token: SeLoadDriverPrivilege 928 powershell.exe Token: SeSystemProfilePrivilege 928 powershell.exe Token: SeSystemtimePrivilege 928 powershell.exe Token: SeProfSingleProcessPrivilege 928 powershell.exe Token: SeIncBasePriorityPrivilege 928 powershell.exe Token: SeCreatePagefilePrivilege 928 powershell.exe Token: SeBackupPrivilege 928 powershell.exe Token: SeRestorePrivilege 928 powershell.exe Token: SeShutdownPrivilege 928 powershell.exe Token: SeDebugPrivilege 928 powershell.exe Token: SeSystemEnvironmentPrivilege 928 powershell.exe Token: SeRemoteShutdownPrivilege 928 powershell.exe Token: SeUndockPrivilege 928 powershell.exe Token: SeManageVolumePrivilege 928 powershell.exe Token: 33 928 powershell.exe Token: 34 928 powershell.exe Token: 35 928 powershell.exe Token: 36 928 powershell.exe Token: SeDebugPrivilege 2540 server.exe Token: 33 2540 server.exe Token: SeIncBasePriorityPrivilege 2540 server.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 556 wrote to memory of 928 556 omesfn.exe 83 PID 556 wrote to memory of 3060 556 omesfn.exe 85 PID 556 wrote to memory of 4184 556 omesfn.exe 87 PID 4184 wrote to memory of 2540 4184 omesf.exe 89 PID 2540 wrote to memory of 832 2540 server.exe 90 PID 2540 wrote to memory of 2172 2540 server.exe 94 PID 2540 wrote to memory of 3516 2540 server.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\omesfn.exe"C:\Users\Admin\AppData\Local\Temp\omesfn.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:556 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHcAaABrACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGwAbQB4ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHoAbQBiACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGEAbQBrACMAPgA="2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:928
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C:\Users\Admin\AppData\Roaming\omesfn.exe"C:\Users\Admin\AppData\Roaming\omesfn.exe"2⤵
- Executes dropped EXE
PID:3060
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C:\Users\Admin\AppData\Roaming\omesf.exe"C:\Users\Admin\AppData\Roaming\omesf.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4184 -
C:\Windows\server.exe"C:\Windows\server.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2540 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE4⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:832
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C:\Windows\SysWOW64\netsh.exenetsh firewall delete allowedprogram "C:\Windows\server.exe"4⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2172
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE4⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3516
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Network
MITRE ATT&CK Enterprise v16
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Obfuscated Files or Information
1Command Obfuscation
1Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0mmjpaw1.c3r.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- TLSH T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Roaming\app
- Size 5B
- SHA256 f7c301f3fcce1c2444b540090e5024f0cea1806ab8ae1d81901ecc3b63334cbb
- MD5 8f11404a507cfb98455f89a534077f73
- SHA1 0716c668f504450353527aff1a6457b8348cf435
- SHA512 85403dd06da5851e8c4d727ca8d87cc0e7ff4974942ec22123366684ed0e51b543a29b6d2521e2e65784c69884fde8d711e5064f104b098293fcd18c44769492
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\omesf.exe
- Size 93KB
- SHA256 41c8ff8dc26cd55fff37409774b7e5fb7a415d454747dcf6468a6a8166d61363
- MD5 dcc35930c35bb712844c1c4909b6e830
- SHA1 8c9cb1c65308d13f972905eda7e075c1fae47def
- SHA512 301c2261cfded471a07b02f1bf72d46b9ee00c21a5141f1cd1cda83ff37f8c029612b852ac6919afcec03e3d5ab583da6206ffe7ba2c3fef52e18fed8c414e5d
- SSDEEP 1536:nOpnEoSnsqS5ut9YDR8SjEwzGi1dDRDXgS:nOVSnsqS5uTYD+7i1dVQ
- TLSH T10E93E84977E56524E4BF56F79871F2004E34B44B1642E39D48F219AA0B33AC48F89FEB
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Roaming\omesfn.exe
- Size 16.7MB
- SHA256 b3fb2e0ccd24cda6628e78f7976d08acd97678be3048efae8f391ef282bb2718
- MD5 787c7da4477d1dc2d78f1f2a85744db4
- SHA1 9d3cd89459d87dc34928ce337c92254135d4405a
- SHA512 827583c15d192a130d3a9adf0dc3488c357de32366a6f45b8fa6e31074e30f396e6817288a99d5935d5b97c43f0ac21bd800403fb91f4089eeff33bc638c74bc
- SSDEEP 196608:XEwzbpukGZe6VRwL3XYDDXd4zpl0BWW6wzdwA4aJ:XEwzbpu5Ze6VbN4zfq9d4E
- TLSH T141072C47E8E219D5C4EA8270D12A826BFA617C091B7D23EB17A1F3301F367D06E76761
- MD5 SHA1 SHA512 SSDEEP TLSH