Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20250502-en - resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system - submitted
12/08/2025, 14:58
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe
Resource
win10v2004-20250502-en
12 signatures
150 seconds
General
- Target fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe
- Size 1.1MB
- Sample250812-scd1cssvbz
- SHA256 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330
- MD5 a9d59e02f37939ff9d11fa9bf9c01861
- SHA1 7837819ecde84af4ff48f44f215c2edcab271420
- SHA512 061bba42959fdc566f0239a25a5bf20b5c83461568de58afc56dedb0d893d15cad0487cdfe2daef068e262b74217ed10e7fc4ffc29ffb30b069787bcab15c275
- SSDEEP 24576:Itb20pkaCqT5TBWgNQ7aWeA0ikWxc9EKnE6A:RVg5tQ7aWf0+e/E5
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Formbook family
- Formbook payload 4 IoCs
resource yara_rule behavioral1/memory/5540-18-0x0000000000400000-0x0000000000442000-memory.dmp family_formbook behavioral1/memory/5540-24-0x0000000000400000-0x0000000000442000-memory.dmp family_formbook behavioral1/memory/4668-27-0x0000000000D80000-0x0000000000DBF000-memory.dmp family_formbook behavioral1/memory/4668-30-0x0000000000D80000-0x0000000000DBF000-memory.dmp family_formbook - Suspicious use of SetThreadContext 5 IoCs
description pid Process procid_target PID 2724 set thread context of 5540 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 84 PID 5540 set thread context of 3544 5540 svchost.exe 56 PID 5540 set thread context of 4668 5540 svchost.exe 94 PID 4668 set thread context of 3544 4668 netbtugc.exe 56 PID 4668 set thread context of 2664 4668 netbtugc.exe 95 - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netbtugc.exe -
description ioc Process Key created \Registry\User\S-1-5-21-1153236273-2212388449-1493869963-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 netbtugc.exe - Suspicious behavior: EnumeratesProcesses 60 IoCs
pid Process 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 5540 svchost.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3544 Explorer.EXE - Suspicious behavior: MapViewOfSection 8 IoCs
pid Process 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 5540 svchost.exe 3544 Explorer.EXE 3544 Explorer.EXE 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe 4668 netbtugc.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe - Suspicious use of SendNotifyMessage 2 IoCs
pid Process 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe - Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2724 wrote to memory of 5540 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 84 PID 2724 wrote to memory of 5540 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 84 PID 2724 wrote to memory of 5540 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 84 PID 2724 wrote to memory of 5540 2724 fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe 84 PID 3544 wrote to memory of 4668 3544 Explorer.EXE 94 PID 3544 wrote to memory of 4668 3544 Explorer.EXE 94 PID 3544 wrote to memory of 4668 3544 Explorer.EXE 94 PID 4668 wrote to memory of 2664 4668 netbtugc.exe 95 PID 4668 wrote to memory of 2664 4668 netbtugc.exe 95
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Users\Admin\AppData\Local\Temp\fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe"C:\Users\Admin\AppData\Local\Temp\fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2724 -
C:\Windows\SysWOW64\svchost.exe"C:\Users\Admin\AppData\Local\Temp\fd4fa972a80b38a4a561bc647bf3720248f81eb85fe719f51fe8dc3965e7f330.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:5540
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C:\Windows\SysWOW64\netbtugc.exe"C:\Windows\SysWOW64\netbtugc.exe"2⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4668 -
C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵PID:2664
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\aut89E2.tmp
- Size 264KB
- SHA256 fa90a5cb836a6130117ed7c2bbfa28ae9b259b647733a80512d55d4fae8157bf
- MD5 b580b98dbedaaff38e1cbb0b4f914384
- SHA1 40d7c876eabfe9d4dba1803ab7bc8a561ae1bf4e
- SHA512 bc6056d57c9ce226617f0a0681d405bfb0e6efa554eafc35d6c08f152c2d09128179102773b44f0abe89186f78ca63fedafa230fcf1568efbbb6d9d20e2152a1
- SSDEEP 6144:S2Dfl6YfZqfigOiWBKhohe1VxbqnbPz83o2SPUOgQSVg9IRk:Hl6UZqfi15i1VKoRSMtk
- MD5 SHA1 SHA512 SSDEEP