Analysis
- user interaction
yes - max time kernel
298s - max time network
271s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
03/07/2026, 19:41
Static task
static1
Behavioral task
behavioral1
Sample
GUP.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
GUP.exe
Resource
win11ltsc2024-20260629-en
Behavioral task
behavioral3
Sample
README.txt
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
README.txt
Resource
win11ltsc2024-20260629-en
Behavioral task
behavioral5
Sample
libcurl.dll
Resource
win10v2004-20260513-en
General
- Target GUP.exe
- Size 789KB
- Sample260703-yeacvaby2n
- SHA256 b9c965aa538c21b4702ec7e4f3ac47fc999e1cd505d69e0896a309f7956bb351
- MD5 7744ed6fac4775706938298f9cb5ba0d
- SHA1 2f20777a19b81a4b37de89e4d5a9b8eda21b51a6
- SHA512 9a6d02f58367c3bb728e81566685b0292232e4cd3e5c6b4eed65928026115e7a1fe20e1248950431a5a9d0b5e477310d756f9a70b9337edebee9b2a9acae47fb
- SSDEEP 12288:r/uMr7FsWEt/e51oHpbIp+UfhbkK4crxzB4uhBTpbAhTPCUe2F:7uOzC9IVkK4CxVToTPB
- TLSH T18C058E2A676C01F8E1B7E27989954507F7B6B859137197CF43A0867A2F236E05F3E320
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Looks up external IP address via web service 5 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 16 ipapi.co 5 api.ipify.org 6 api.ipify.org 7 ip-api.com 15 ipapi.co - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe - Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 GUP.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString GUP.exe Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000_Classes\Local Settings OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-889581200-2041691093-2048517887-1000_Classes\Local Settings OpenWith.exe - Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3728 NOTEPAD.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4640 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 17 IoCs
pid Process 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 5072 taskmgr.exe Token: SeSystemProfilePrivilege 5072 taskmgr.exe Token: SeCreateGlobalPrivilege 5072 taskmgr.exe Token: 33 5072 taskmgr.exe Token: SeIncBasePriorityPrivilege 5072 taskmgr.exe - Suspicious use of FindShellTrayWindow 43 IoCs
pid Process 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe - Suspicious use of SendNotifyMessage 43 IoCs
pid Process 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe 5072 taskmgr.exe - Suspicious use of SetWindowsHookEx 27 IoCs
pid Process 4796 GUP.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 2932 OpenWith.exe 4472 OpenWith.exe 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE 4640 EXCEL.EXE - Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4796 wrote to memory of 4536 4796 GUP.exe 88 PID 4796 wrote to memory of 4536 4796 GUP.exe 88 PID 4796 wrote to memory of 3664 4796 GUP.exe 90 PID 4796 wrote to memory of 3664 4796 GUP.exe 90 PID 2932 wrote to memory of 3728 2932 OpenWith.exe 105
Processes
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C:\Users\Admin\AppData\Local\Temp\GUP.exe"C:\Users\Admin\AppData\Local\Temp\GUP.exe"1⤵
- Checks processor information in registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4796 -
C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:4536
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C:\Program Files\Google\Chrome\Application\chrome.exe"C:\Program Files\Google\Chrome\Application\chrome.exe"2⤵PID:3664
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C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵PID:4712
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C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"1⤵PID:5080
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1240
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2932 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\WatchExport.php2⤵
- Opens file in notepad (likely ransom note)
PID:3728
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4472
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\Desktop\ProtectDebug.xlsx"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4640
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:5072
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
- Size 313B
- SHA256 65dbc350b795b1ad0857b6078efc360f7afed808324899f1e0599f306dee818b
- MD5 45fcfc3a4f1fc136f53639d567868fd9
- SHA1 f9bcdc53d9c3c80e07a9d4197f171852d1cd7117
- SHA512 1bffcd76d9d5f77f950ddb5fb715eaa258462d24ec127b457196441703f2db3b124b20829239eb188dafcee68755aaba20314c864cd9abd698fdc8e0b848163c
- TLSH T102E02697A335EBF1A3FD91D4B93C9DE58BF14829DA69503121CD0E9A0C7258350A7409
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
- Size 1KB
- SHA256 4a39354637feda2cd3b0ba2b2e7d17795641d55b7ebbb12280b94af160dfde4f
- MD5 a72e91cb6eb0b8e13a0bf15faed83348
- SHA1 319cb393eefb2ff2daa40dba496e23c93476c351
- SHA512 c422c45f482dfdae49148f4a0677e111996b1b11999eefd1bb6df7419bf1d552721cff44c0404e9e3ca24f0d24fca02bebafe32dd901de75b801d9d630bd15df
- TLSH T1FB41C04319EB0F62D0A5627F6B399727E72079139724E10E7188112F7CE3A41697EB1A
- MD5 SHA1 SHA512 TLSH