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
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
Malware Config
Targets
-
- Target LETTER_OF_AUTHORIZATION.js
- Size 2.9MB
- SHA256 6f8de7554244b802dfe7f28a7b842a9aa91e3cfbf39c34ec4a67b659b5ff63bb
- MD5 475f91ecbb9e199926cc5e3de8b6b6ac
- SHA1 7b17c7428d60ccc0f2370b71bc4398731fd36df3
- SHA512 6fc2cc3cdb2e9d286abd70a8ee4422ac45caebfa4e6a240c3d7f24be9b40b5129ece1b5c475396b2ebb884ce9c25bdf8027e05a22a9329bcf60b753f05ef1528
- SSDEEP 12288:z9p9zfO2Bss6rzLc7OewQE/KFiVVmvQteuulqrvpEW/gzNQ9oi:RnR6rzLco
- TLSH T1FCE552872BD9B24B2C13EB15850DD45C0ADB84A30C529ACCA1ED17DC8E1F6CA7B74E5B
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Formbook payload
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Badlisted process makes network request
Network request originating from process or tool commonly abused by malware.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Accesses Microsoft Outlook profiles
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ConfuserEx .NET packer
Detects ConfuserEx .NET packer.
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Suspicious use of SetThreadContext