Analysis
- max time kernel
150s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20251016-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 4436 -s 10803⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4436 -ip 44361⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
LangDLL.dll
System.dll
velbehag.ini
memory/3780-630-0x0000000073DA5000-0x0000000073DA6000-memory.dmp
memory/4436-646-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4436-649-0x00000000770C1000-0x00000000771E1000-memory.dmp
memory/4436-634-0x0000000077165000-0x0000000077166000-memory.dmp
memory/4436-633-0x00000000771E9000-0x00000000771EA000-memory.dmp
memory/4436-645-0x00000000770C1000-0x00000000771E1000-memory.dmp
memory/4436-644-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-631-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-647-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-648-0x00000000771E9000-0x00000000771EA000-memory.dmp
memory/4436-632-0x0000000077148000-0x0000000077149000-memory.dmp
memory/4436-650-0x0000000000401000-0x0000000000404000-memory.dmp
memory/4436-651-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-652-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-653-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-654-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-655-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4436-656-0x0000000000401000-0x0000000000404000-memory.dmp