Analysis
- max time kernel
149s - max time network
126s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
10/09/2026, 10:07
Static task
static1
Behavioral task
behavioral1
Sample
LETTER_OF_AUTHORIZATION.js
Resource
win10v2004-20260513-en
18 signatures
150 seconds
Behavioral task
behavioral2
Sample
LETTER_OF_AUTHORIZATION.js
Resource
win11ltsc2024-20260709-en
17 signatures
150 seconds
General
- Target LETTER_OF_AUTHORIZATION.js
- Size 2.9MB
- Sample260910-l5qrasvtcs
- SHA256 6f8de7554244b802dfe7f28a7b842a9aa91e3cfbf39c34ec4a67b659b5ff63bb
- MD5 475f91ecbb9e199926cc5e3de8b6b6ac
- SHA1 7b17c7428d60ccc0f2370b71bc4398731fd36df3
- SHA512 6fc2cc3cdb2e9d286abd70a8ee4422ac45caebfa4e6a240c3d7f24be9b40b5129ece1b5c475396b2ebb884ce9c25bdf8027e05a22a9329bcf60b753f05ef1528
- SSDEEP 12288:z9p9zfO2Bss6rzLc7OewQE/KFiVVmvQteuulqrvpEW/gzNQ9oi:RnR6rzLco
- TLSH T1FCE552872BD9B24B2C13EB15850DD45C0ADB84A30C529ACCA1ED17DC8E1F6CA7B74E5B
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Formbook payload 4 IoCs
resource yara_rule behavioral2/memory/2412-28-0x0000000001330000-0x0000000001376000-memory.dmp family_formbook behavioral2/memory/2412-32-0x0000000001330000-0x0000000001376000-memory.dmp family_formbook behavioral2/memory/2412-37-0x0000000001330000-0x0000000001376000-memory.dmp family_formbook behavioral2/memory/5316-39-0x0000000000890000-0x00000000008D3000-memory.dmp family_formbook - Badlisted process makes network request 4 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 10 3556 wscript.exe 13 3556 wscript.exe 15 3556 wscript.exe 15 3556 wscript.exe - Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 6064 powershell.exe - Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs
description ioc Process Key enumerated \REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook gpresult.exe - ConfuserEx .NET packer 2 IoCs
Detects ConfuserEx .NET packer.
resource yara_rule behavioral2/memory/6064-22-0x000001AD3AD30000-0x000001AD3AD44000-memory.dmp ConfuserEx behavioral2/memory/6064-25-0x000001AD53210000-0x000001AD53224000-memory.dmp ConfuserEx - Suspicious use of SetThreadContext 20 IoCs
description pid Process procid_target PID 6064 set thread context of 2412 6064 powershell.exe 96 PID 2412 set thread context of 3556 2412 aspnet_compiler.exe 87 PID 2412 set thread context of 5316 2412 aspnet_compiler.exe 97 PID 6064 set thread context of 2484 6064 powershell.exe 98 PID 6064 set thread context of 5452 6064 powershell.exe 100 PID 5316 set thread context of 3556 5316 gpresult.exe 87 PID 6064 set thread context of 2016 6064 powershell.exe 101 PID 6064 set thread context of 2692 6064 powershell.exe 102 PID 6064 set thread context of 4696 6064 powershell.exe 106 PID 5316 set thread context of 4500 5316 gpresult.exe 103 PID 6064 set thread context of 3664 6064 powershell.exe 107 PID 6064 set thread context of 2340 6064 powershell.exe 108 PID 6064 set thread context of 5572 6064 powershell.exe 109 PID 6064 set thread context of 1076 6064 powershell.exe 110 PID 6064 set thread context of 2560 6064 powershell.exe 111 PID 6064 set thread context of 1524 6064 powershell.exe 112 PID 6064 set thread context of 5848 6064 powershell.exe 115 PID 6064 set thread context of 1452 6064 powershell.exe 116 PID 6064 set thread context of 1460 6064 powershell.exe 117 PID 6064 set thread context of 1512 6064 powershell.exe 118 - Command and Scripting Interpreter: JavaScript 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 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 gpresult.exe - Kills process with taskkill 1 IoCs
pid Process 6132 taskkill.exe -
description ioc Process Key created \Registry\User\S-1-5-21-1738198120-2966725515-3980530802-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 gpresult.exe - Suspicious behavior: EnumeratesProcesses 62 IoCs
pid Process 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 2412 aspnet_compiler.exe 2412 aspnet_compiler.exe 2412 aspnet_compiler.exe 2412 aspnet_compiler.exe 6064 powershell.exe 6064 powershell.exe 5316 gpresult.exe 5316 gpresult.exe 6064 powershell.exe 5316 gpresult.exe 2484 aspnet_compiler.exe 5316 gpresult.exe 6064 powershell.exe 5452 aspnet_compiler.exe 6064 powershell.exe 2016 aspnet_compiler.exe 6064 powershell.exe 2692 aspnet_compiler.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 4696 aspnet_compiler.exe 6064 powershell.exe 3664 aspnet_compiler.exe 6064 powershell.exe 2340 aspnet_compiler.exe 6064 powershell.exe 5572 aspnet_compiler.exe 6064 powershell.exe 1076 aspnet_compiler.exe 6064 powershell.exe 2560 aspnet_compiler.exe 6064 powershell.exe 1524 aspnet_compiler.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 6064 powershell.exe 5848 aspnet_compiler.exe 6064 powershell.exe 1452 aspnet_compiler.exe 6064 powershell.exe 1460 aspnet_compiler.exe 6064 powershell.exe 1512 aspnet_compiler.exe - Suspicious behavior: MapViewOfSection 7 IoCs
pid Process 2412 aspnet_compiler.exe 3556 wscript.exe 3556 wscript.exe 5316 gpresult.exe 5316 gpresult.exe 5316 gpresult.exe 5316 gpresult.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 6064 powershell.exe Token: SeDebugPrivilege 6132 taskkill.exe - Suspicious use of WriteProcessMemory 61 IoCs
description pid Process procid_target PID 3556 wrote to memory of 6064 3556 wscript.exe 89 PID 6064 wrote to memory of 4576 6064 powershell.exe 91 PID 6064 wrote to memory of 4116 6064 powershell.exe 92 PID 6064 wrote to memory of 4112 6064 powershell.exe 93 PID 6064 wrote to memory of 4964 6064 powershell.exe 94 PID 6064 wrote to memory of 4960 6064 powershell.exe 95 PID 6064 wrote to memory of 2412 6064 powershell.exe 96 PID 6064 wrote to memory of 2412 6064 powershell.exe 96 PID 6064 wrote to memory of 2412 6064 powershell.exe 96 PID 3556 wrote to memory of 5316 3556 wscript.exe 97 PID 6064 wrote to memory of 2484 6064 powershell.exe 98 PID 6064 wrote to memory of 2484 6064 powershell.exe 98 PID 6064 wrote to memory of 2484 6064 powershell.exe 98 PID 6064 wrote to memory of 5452 6064 powershell.exe 100 PID 6064 wrote to memory of 5452 6064 powershell.exe 100 PID 6064 wrote to memory of 5452 6064 powershell.exe 100 PID 6064 wrote to memory of 2016 6064 powershell.exe 101 PID 6064 wrote to memory of 2016 6064 powershell.exe 101 PID 6064 wrote to memory of 2016 6064 powershell.exe 101 PID 6064 wrote to memory of 2692 6064 powershell.exe 102 PID 6064 wrote to memory of 2692 6064 powershell.exe 102 PID 6064 wrote to memory of 2692 6064 powershell.exe 102 PID 5316 wrote to memory of 4500 5316 gpresult.exe 103 PID 6064 wrote to memory of 2088 6064 powershell.exe 104 PID 6064 wrote to memory of 5116 6064 powershell.exe 105 PID 6064 wrote to memory of 4696 6064 powershell.exe 106 PID 6064 wrote to memory of 4696 6064 powershell.exe 106 PID 6064 wrote to memory of 4696 6064 powershell.exe 106 PID 6064 wrote to memory of 3664 6064 powershell.exe 107 PID 6064 wrote to memory of 3664 6064 powershell.exe 107 PID 6064 wrote to memory of 3664 6064 powershell.exe 107 PID 6064 wrote to memory of 2340 6064 powershell.exe 108 PID 6064 wrote to memory of 2340 6064 powershell.exe 108 PID 6064 wrote to memory of 2340 6064 powershell.exe 108 PID 6064 wrote to memory of 5572 6064 powershell.exe 109 PID 6064 wrote to memory of 5572 6064 powershell.exe 109 PID 6064 wrote to memory of 5572 6064 powershell.exe 109 PID 6064 wrote to memory of 1076 6064 powershell.exe 110 PID 6064 wrote to memory of 1076 6064 powershell.exe 110 PID 6064 wrote to memory of 1076 6064 powershell.exe 110 PID 6064 wrote to memory of 2560 6064 powershell.exe 111 PID 6064 wrote to memory of 2560 6064 powershell.exe 111 PID 6064 wrote to memory of 2560 6064 powershell.exe 111 PID 6064 wrote to memory of 1524 6064 powershell.exe 112 PID 6064 wrote to memory of 1524 6064 powershell.exe 112 PID 6064 wrote to memory of 1524 6064 powershell.exe 112 PID 6064 wrote to memory of 2740 6064 powershell.exe 113 PID 6064 wrote to memory of 5696 6064 powershell.exe 114 PID 6064 wrote to memory of 5848 6064 powershell.exe 115 PID 6064 wrote to memory of 5848 6064 powershell.exe 115 PID 6064 wrote to memory of 5848 6064 powershell.exe 115 PID 6064 wrote to memory of 1452 6064 powershell.exe 116 PID 6064 wrote to memory of 1452 6064 powershell.exe 116 PID 6064 wrote to memory of 1452 6064 powershell.exe 116 PID 6064 wrote to memory of 1460 6064 powershell.exe 117 PID 6064 wrote to memory of 1460 6064 powershell.exe 117 PID 6064 wrote to memory of 1460 6064 powershell.exe 117 PID 6064 wrote to memory of 1512 6064 powershell.exe 118 PID 6064 wrote to memory of 1512 6064 powershell.exe 118 PID 6064 wrote to memory of 1512 6064 powershell.exe 118 PID 3556 wrote to memory of 6132 3556 wscript.exe 120 - outlook_office_path 1 IoCs
description ioc Process Key enumerated \REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook gpresult.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\LETTER_OF_AUTHORIZATION.js1⤵
- Badlisted process makes network request
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3556 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy Bypass -NoProfile -WindowStyle Hidden -File "C:\Temp\ps_DomlyN0CYM5V_1789034838568.ps1"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6064 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:4576
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:4116
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:4112
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:4964
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:4960
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:2412
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2484
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:5452
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2016
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2692
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:2088
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:5116
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:4696
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:3664
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2340
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:5572
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1076
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:2560
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1524
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:2740
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵PID:5696
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:5848
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1452
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1460
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
PID:1512
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C:\Windows\SysWOW64\gpresult.exe"C:\Windows\SysWOW64\gpresult.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
- outlook_office_path
PID:5316 -
C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵PID:4500
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C:\Windows\System32\taskkill.exe"C:\Windows\System32\taskkill.exe" /f /im wscript.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:6132
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Temp\ps_DomlyN0CYM5V_1789034838568.ps1
- Size 2.2MB
- SHA256 d6be73838700bdae174a02aa3e95442b3d4a9a7b56c875f3075b4246863ad0db
- MD5 dba17018ef2a9d202453e35990e67b81
- SHA1 b4dcabbf702e2e4beeef3aab1bac912423b431ec
- SHA512 faa4cd4bd41953adcd5ad460512d813b55272bae0ba69e310ac3870896f53696b07518133347268e2bfe2acc34c92822b716e47f17ba8fb39638fe49f113b9cd
- SSDEEP 24576:784NVJB9F8/rFiyZIO4KDzqU83tZ8ZSDwTT:K
- TLSH T1ADB5A8D473C8B7A6790D7B1A542D9C7A635102729E8C278847DCEAC73A63931FF86423
- MD5 SHA1 SHA512 SSDEEP TLSH