Analysis
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max time kernel
118s -
max time network
120s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
08-10-2021 07:09
Static task
static1
Behavioral task
behavioral1
Sample
COAU7229898130.xlsx
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
COAU7229898130.xlsx
Resource
win10v20210408
General
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Target
COAU7229898130.xlsx
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Size
327KB
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MD5
86e0d3f2f6c8d3e8cf4da4e316f8960a
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SHA1
ce24becfb84a908059c0403ba3ba940dda9c0db4
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SHA256
20163a5eb0b8c8bc8853d5b1a4516f12e94a14737f59e112ee51d6d6e37b9466
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SHA512
0d71d4b2e745efa0161321ef9d9768145ea7cb5fbff8f89b5e8bcd600d8770479c194f41f198d90b61595cbb1e1a408a7381be08c49be1ef139a0e5cce338bb7
Malware Config
Signatures
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Detect Neshta Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1100-78-0x00000000004080E4-mapping.dmp family_neshta behavioral1/memory/1100-77-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/1100-82-0x0000000000400000-0x000000000041B000-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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Blocklisted process makes network request 1 IoCs
Processes:
EQNEDT32.EXEflow pid process 4 868 EQNEDT32.EXE -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
vbc.exevbc.exepid process 1164 vbc.exe 1100 vbc.exe -
Loads dropped DLL 6 IoCs
Processes:
EQNEDT32.EXEvbc.exepid process 868 EQNEDT32.EXE 868 EQNEDT32.EXE 868 EQNEDT32.EXE 868 EQNEDT32.EXE 1100 vbc.exe 1100 vbc.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
vbc.exedescription pid process target process PID 1164 set thread context of 1100 1164 vbc.exe vbc.exe -
Drops file in Program Files directory 64 IoCs
Processes:
vbc.exedescription ioc process File opened for modification C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WORDICON.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\Resource\Icons\SC_REA~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.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\VPREVIEW.EXE vbc.exe File opened for modification C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.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\MICROS~1\Office14\ACCICONS.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\MSTORE.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\CNFNOT32.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~1\WinMail.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GRAPH.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\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\ONENOTE.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.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\COMMON~1\Adobe\Updater6\ADOBE_~1.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\OFFICE14\LICLUA.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\setup_wm.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\Reader\LOGTRA~1.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\OFFICE14\OFFICE~1\Setup.exe vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~1\wab.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\ADOBEU~1.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\MICROS~1\Office14\misc.exe vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE vbc.exe File opened for modification C:\PROGRA~2\WINDOW~4\ImagingDevices.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\Adobe\READER~1.0\Reader\AcroRd32.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\MSOICONS.EXE vbc.exe File opened for modification C:\PROGRA~2\WI54FB~1\WMPDMC.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\MICROS~1\Office14\SELFCERT.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\MICROS~1\Office14\1033\ONELEV.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\ONENOTEM.EXE vbc.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE vbc.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOUC.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\wmplayer.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\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE vbc.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.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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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 HTML Editor\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command 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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\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 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor 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 MHTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND 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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell 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 -
Modifies registry class 64 IoCs
Processes:
EXCEL.EXEvbc.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\mhtmlfile EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ = "&Open" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\ = "&Open" 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\Edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000 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\Wow6432Node\CLSID EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon 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\.htm\OpenWithList\MSPub.exe EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList 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\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\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\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit 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\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1" EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit 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\ddeexec\ = "[open(\"%1\")]" EXCEL.EXE Key deleted \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\"" EXCEL.EXE Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000 EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command EXCEL.EXE Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon\ = "\"%1\"" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit 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 Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2040 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 5 IoCs
Processes:
EXCEL.EXEpid process 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE 2040 EXCEL.EXE -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
EQNEDT32.EXEvbc.exedescription pid process target process PID 868 wrote to memory of 1164 868 EQNEDT32.EXE vbc.exe PID 868 wrote to memory of 1164 868 EQNEDT32.EXE vbc.exe PID 868 wrote to memory of 1164 868 EQNEDT32.EXE vbc.exe PID 868 wrote to memory of 1164 868 EQNEDT32.EXE vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 vbc.exe vbc.exe PID 1164 wrote to memory of 1100 1164 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\COAU7229898130.xlsx1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2040
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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:868 -
C:\Users\Public\vbc.exe"C:\Users\Public\vbc.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1164 -
C:\Users\Public\vbc.exe"C:\Users\Public\vbc.exe"3⤵
- Modifies system executable filetype association
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:1100
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\K8CH4PHC\VBC_1_~1.EXEMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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C:\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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C:\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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C:\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXEMD5
9e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156
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\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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\Users\Public\vbc.exeMD5
13a1c548abf86e0c908fdeca6fb315fe
SHA1c2988a93906cffd63704990194eb9b3ba556a209
SHA25642b3efec41088a0afd2cc17e038169dd572baa116aa734a427012d39917f4107
SHA512db1b2013853fcad8c54337af2cb42f1c54a0b73cf438475e58d799a0623808686ca5100f275de8d90d3169747e0ed3ee132bca720c0e04eea565c33fde58a50d
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memory/868-56-0x0000000075BD1000-0x0000000075BD3000-memory.dmpFilesize
8KB
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memory/1100-76-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-75-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-82-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-77-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-70-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-71-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-72-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-73-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-74-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1100-78-0x00000000004080E4-mapping.dmp
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memory/1164-67-0x0000000004D00000-0x0000000004D01000-memory.dmpFilesize
4KB
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memory/1164-69-0x0000000005710000-0x0000000005766000-memory.dmpFilesize
344KB
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memory/1164-64-0x0000000000FB0000-0x0000000000FB1000-memory.dmpFilesize
4KB
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memory/1164-61-0x0000000000000000-mapping.dmp
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memory/1164-68-0x00000000004E0000-0x00000000004F1000-memory.dmpFilesize
68KB
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memory/2040-53-0x000000002F921000-0x000000002F924000-memory.dmpFilesize
12KB
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memory/2040-55-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/2040-54-0x0000000071781000-0x0000000071783000-memory.dmpFilesize
8KB
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memory/2040-85-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB