Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04-01-2025 14:01
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 behavioral1/files/0x0001000000010318-12.dat family_neshta behavioral1/memory/2076-118-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/2076-120-0x0000000000400000-0x000000000041B000-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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Executes dropped EXE 1 IoCs
pid Process 3032 GrayWolf.exe -
Loads dropped DLL 3 IoCs
pid Process 2076 GrayWolf.exe 2076 GrayWolf.exe 2076 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 behavioral1/files/0x0009000000015db5-6.dat agile_net behavioral1/memory/3032-15-0x0000000000AC0000-0x0000000001026000-memory.dmp agile_net behavioral1/memory/3032-20-0x000000001AD40000-0x000000001ADF2000-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\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.exe GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~4\ImagingDevices.exe GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~1\wab.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\INTERN~1\iexplore.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.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~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WINDOW~1\WinMail.exe GrayWolf.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\DISABL~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE GrayWolf.exe File opened for modification C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WI4223~1\sidebar.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.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\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.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\MICROS~1\Office14\ACCICONS.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\OIS.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WI54FB~1\setup_wm.exe GrayWolf.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\misc.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpconfig.exe GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE GrayWolf.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WORDICON.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\Google\Update\1336~1.151\GOBD5D~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 21 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 GrayWolf.exe Set value (int) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags GrayWolf.exe Set value (int) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg GrayWolf.exe Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" GrayWolf.exe Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" 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-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 GrayWolf.exe Set value (data) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 GrayWolf.exe Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 GrayWolf.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3032 GrayWolf.exe -
Suspicious use of SetWindowsHookEx 17 IoCs
pid Process 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe 3032 GrayWolf.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2076 wrote to memory of 3032 2076 GrayWolf.exe 30 PID 2076 wrote to memory of 3032 2076 GrayWolf.exe 30 PID 2076 wrote to memory of 3032 2076 GrayWolf.exe 30 PID 2076 wrote to memory of 3032 2076 GrayWolf.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe"C:\Users\Admin\AppData\Local\Temp\GrayWolf.exe"1⤵
- Loads dropped DLL
- 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:2076 -
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 behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:3032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
547KB
MD5cf6c595d3e5e9667667af096762fd9c4
SHA19bb44da8d7f6457099cb56e4f7d1026963dce7ce
SHA256593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d
SHA512ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80
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Filesize
5.4MB
MD502a88d03242515576fa54218538e34fa
SHA1ed6f90fcbf9fabf0da167987e1c2647833df5d6e
SHA256533afe3493caae3a36d03f7766aeeec4de9f682a76d73b8098f975daacf48c0b
SHA512b9b0a03500e5ef66569dc42b07c5da6c186660989403bafd9f8511303add0622f8a9f670f73dffa3ddd8fe044b82c4e26a4ad6ae6e1aa0898c72b3ef671e09d5
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Filesize
252KB
MD59e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156