Analysis
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max time kernel
108s -
max time network
37s -
platform
windows7_x64 -
resource
win7-en-20210916 -
submitted
17-09-2021 20:24
Static task
static1
Behavioral task
behavioral1
Sample
672300912.xlsx
Resource
win7-en-20210916
Behavioral task
behavioral2
Sample
672300912.xlsx
Resource
win10v20210408
General
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Target
672300912.xlsx
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Size
588KB
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MD5
f45c96d01984b479b9c586f7686e0727
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SHA1
4a0293afdd747d2b75bc686e6d2556a6271dc413
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SHA256
d590113d786474dda028703f5cf2dbf1e2f4c03ae06e4032af83bdefaa670216
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SHA512
2f6ceebc0872412716780f872303f3b1363c684ebc11c7c0771748d390ec37acd2c652f779e262622e9a9aec26a11a6ab99993255b5503059ca2cc1aa0d51fc5
Malware Config
Signatures
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Detect Neshta Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1720-73-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/1720-74-0x00000000004080E4-mapping.dmp family_neshta behavioral1/memory/1720-76-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe -
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Blocklisted process makes network request 1 IoCs
Processes:
EQNEDT32.EXEflow pid process 3 636 EQNEDT32.EXE -
Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
Processes:
vbc.exepid process 1780 vbc.exe -
Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
vbc.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion vbc.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion vbc.exe -
Loads dropped DLL 8 IoCs
Processes:
EQNEDT32.EXEvbc.exepid process 636 EQNEDT32.EXE 636 EQNEDT32.EXE 636 EQNEDT32.EXE 636 EQNEDT32.EXE 1720 vbc.exe 1720 vbc.exe 1720 vbc.exe 1720 vbc.exe -
Uses the VBS compiler for execution 1 TTPs
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum vbc.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 vbc.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
vbc.exedescription pid process target process PID 1780 set thread context of 1720 1780 vbc.exe vbc.exe -
Drops file in Program Files directory 64 IoCs
Processes:
vbc.exedescription ioc process File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmlaunch.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpconfig.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GOOGLE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmplayer.exe vbc.exe File opened for modification C:\PROGRA~2\WI4223~1\sidebar.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\GOOGLE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ieinstal.exe vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\ielowutil.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GOOGLE~2.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~1\WinMail.exe vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\WMPDMC.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GO664E~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GOF5E2~1.EXE vbc.exe File opened for modification C:\PROGRA~2\INTERN~1\iexplore.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\setup_wm.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GOFB2B~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\Download\{430FD~1\1336~1.102\GOOGLE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE vbc.exe File opened for modification C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.102\GOOGLE~3.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\OIS.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\UNINST~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.exe vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE vbc.exe -
Drops file in Windows directory 1 IoCs
Processes:
vbc.exedescription ioc process File opened for modification C:\Windows\svchost.com vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
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Processes:
EXCEL.EXEdescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit EXCEL.EXE -
Modifies registry class 64 IoCs
Processes:
EXCEL.EXEdescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\htmlfile EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\ = "&Edit" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ThreadingModel = "Apartment" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohevi.dll" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597} EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\mhtmlfile EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1432 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
vbc.exepid process 1780 vbc.exe 1780 vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
vbc.exedescription pid process Token: SeDebugPrivilege 1780 vbc.exe -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
EXCEL.EXEpid process 1432 EXCEL.EXE 1432 EXCEL.EXE 1432 EXCEL.EXE 1432 EXCEL.EXE 1432 EXCEL.EXE -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
EQNEDT32.EXEvbc.exedescription pid process target process PID 636 wrote to memory of 1780 636 EQNEDT32.EXE vbc.exe PID 636 wrote to memory of 1780 636 EQNEDT32.EXE vbc.exe PID 636 wrote to memory of 1780 636 EQNEDT32.EXE vbc.exe PID 636 wrote to memory of 1780 636 EQNEDT32.EXE vbc.exe PID 1780 wrote to memory of 832 1780 vbc.exe schtasks.exe PID 1780 wrote to memory of 832 1780 vbc.exe schtasks.exe PID 1780 wrote to memory of 832 1780 vbc.exe schtasks.exe PID 1780 wrote to memory of 832 1780 vbc.exe schtasks.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe PID 1780 wrote to memory of 1720 1780 vbc.exe vbc.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\672300912.xlsx1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1432
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C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:636 -
C:\Users\Public\vbc.exe"C:\Users\Public\vbc.exe"2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1780 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmp674A.tmp"3⤵
- Creates scheduled task(s)
PID:832 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"3⤵
- Modifies system executable filetype association
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
PID:1720
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\MICROS~1\Windows\TEMPOR~1\Content.IE5\UL9KF5IE\VBC_1_~1.EXEMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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C:\Users\Admin\AppData\Roaming\PaJrxje.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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C:\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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C:\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXEMD5
9e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156
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\Users\Admin\AppData\Local\MICROS~1\Windows\TEMPOR~1\Content.IE5\UL9KF5IE\VBC_1_~1.EXEMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Admin\AppData\Roaming\PaJrxje.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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\Users\Public\vbc.exeMD5
66ce1420280eceebeab924165f28b7bb
SHA17355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA25656331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA5128fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369
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memory/636-56-0x0000000076001000-0x0000000076003000-memory.dmpFilesize
8KB
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memory/832-72-0x0000000000000000-mapping.dmp
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memory/1432-69-0x00000000062D0000-0x0000000006F1A000-memory.dmpFilesize
12.3MB
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memory/1432-68-0x00000000062D0000-0x0000000006F1A000-memory.dmpFilesize
12.3MB
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memory/1432-54-0x00000000714A1000-0x00000000714A3000-memory.dmpFilesize
8KB
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memory/1432-55-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1432-53-0x000000002F481000-0x000000002F484000-memory.dmpFilesize
12KB
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memory/1720-76-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1720-74-0x00000000004080E4-mapping.dmp
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memory/1720-73-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1780-67-0x0000000000420000-0x0000000000427000-memory.dmpFilesize
28KB
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memory/1780-66-0x0000000000A10000-0x0000000000A11000-memory.dmpFilesize
4KB
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memory/1780-64-0x00000000013B0000-0x00000000013B1000-memory.dmpFilesize
4KB
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memory/1780-61-0x0000000000000000-mapping.dmp
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memory/1780-71-0x0000000004F40000-0x0000000004FC0000-memory.dmpFilesize
512KB
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memory/1780-70-0x00000000057C0000-0x0000000005864000-memory.dmpFilesize
656KB