Analysis
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max time kernel
22s -
max time network
5s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
04-01-2025 13:59
Behavioral task
behavioral1
Sample
GrayWolf.exe
Resource
win7-20240903-en
General
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Target
GrayWolf.exe
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Size
5.4MB
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MD5
fc880e4806da9ef322b4918ad89880bd
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SHA1
a359064fce75722488038c4316deb7354cef87b5
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SHA256
608e5234a2745f72909b5e002176149df66e39c36217fcc4826f13dba9e0153e
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SHA512
ea43f38145b4493a0a2ed5a7fa6997dd86573530a479e7593928629f74106430e2e45ee15e156f6f3c648d164d909db0591fb0407034037e79d3175b146471da
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SSDEEP
49152:DF/5OwXqsw+mw6j4w6SAZplWz3SUcSUWrXxRyJQfSqF6kr3Az0L:D/B0rQgCUcSUWOv98JL
Malware Config
Signatures
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Detect Neshta payload 3 IoCs
resource yara_rule behavioral2/files/0x000600000002024c-45.dat family_neshta behavioral2/memory/2608-132-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral2/memory/2608-133-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta -
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Neshta family
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation GrayWolf.exe -
Executes dropped EXE 1 IoCs
pid Process 4844 GrayWolf.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" GrayWolf.exe -
Obfuscated with Agile.Net obfuscator 3 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
resource yara_rule behavioral2/files/0x000d000000023ba8-4.dat agile_net behavioral2/memory/4844-13-0x00000000003F0000-0x0000000000956000-memory.dmp agile_net behavioral2/memory/4844-18-0x000000001B660000-0x000000001B712000-memory.dmp agile_net -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\wmpconfig.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GOBD5D~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\INTERN~1\iexplore.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MI9C33~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WI8A19~1\ImagingDevices.exe GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\wmplayer.exe GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\wmpshare.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MIA062~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\wmlaunch.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\INTERN~1\ielowutil.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~3.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~2\wab.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~2\wabmig.exe GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\setup_wm.exe GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\INTERN~1\ExtExport.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MID1AD~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~2.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\wmprph.exe GrayWolf.exe File opened for modification C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.371\GO664E~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\DISABL~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MOZILL~1\UNINST~1.EXE GrayWolf.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\svchost.com GrayWolf.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 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 GrayWolf.exe -
Modifies registry class 19 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 14002e80922b16d365937a46956b92703aca08af0000 GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 GrayWolf.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell GrayWolf.exe Set value (str) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Documents" GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff GrayWolf.exe Set value (int) \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags GrayWolf.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4844 GrayWolf.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2608 wrote to memory of 4844 2608 GrayWolf.exe 82 PID 2608 wrote to memory of 4844 2608 GrayWolf.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe"C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe"1⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2608 -
C:\Users\Admin\AppData\Local\Temp\3582-490\GrayWolf.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\GrayWolf.exe"2⤵
- Executes dropped EXE
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:4844
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
86KB
MD53b73078a714bf61d1c19ebc3afc0e454
SHA19abeabd74613a2f533e2244c9ee6f967188e4e7e
SHA256ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
SHA51275959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4
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Filesize
5.4MB
MD502a88d03242515576fa54218538e34fa
SHA1ed6f90fcbf9fabf0da167987e1c2647833df5d6e
SHA256533afe3493caae3a36d03f7766aeeec4de9f682a76d73b8098f975daacf48c0b
SHA512b9b0a03500e5ef66569dc42b07c5da6c186660989403bafd9f8511303add0622f8a9f670f73dffa3ddd8fe044b82c4e26a4ad6ae6e1aa0898c72b3ef671e09d5