Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
08/12/2025, 15:55
General
- Target f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe
- Size 645KB
- Sample251208-tc7hcafy9d
- SHA256 f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9
Malware Config
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook family
- Formbook payload 3 IoCs
- Loads dropped DLL 6 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Program Files directory 1 IoCs
- Drops file in Windows directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"C:\Users\Admin\AppData\Local\Temp\f46592fccdfe87478bfa33d5119ba8a52ce14f8b6bcd8ace66f0b7cb790d78d9.exe"3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3312 -s 15883⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3312 -ip 33121⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
LangDLL.dll
System.dll
velbehag.ini
memory/2284-630-0x0000000074805000-0x0000000074806000-memory.dmp
memory/3312-648-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-651-0x0000000077A61000-0x0000000077B83000-memory.dmp
memory/3312-633-0x0000000077B8B000-0x0000000077B8C000-memory.dmp
memory/3312-634-0x0000000077B0B000-0x0000000077B0C000-memory.dmp
memory/3312-647-0x0000000077A61000-0x0000000077B83000-memory.dmp
memory/3312-646-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-631-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-649-0x0000000000401000-0x0000000000404000-memory.dmp
memory/3312-650-0x0000000077B8B000-0x0000000077B8C000-memory.dmp
memory/3312-632-0x0000000077AF8000-0x0000000077AF9000-memory.dmp
memory/3312-652-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-653-0x0000000000401000-0x0000000000404000-memory.dmp
memory/3312-654-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-655-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-656-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-657-0x0000000000400000-0x0000000001717000-memory.dmp
memory/3312-659-0x0000000000401000-0x0000000000404000-memory.dmp