neshta | 7ffcb9f6daf4464de0fc3d659e47b76673c16c0f864ad0d2d1ac40f4b295ddfb

Analysis

max time kernel
141s
max time network
138s
platform
windows7_x64
resource
win7-en-20210920
submitted
04-10-2021 08:50

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General

Target

PO 20212702.xlsx
Size

313KB
MD5

866d989d919c96e981a9b8ab1af9d8fb
SHA1

1ba7069a23eb4cbac7bb6653fe6d6e461ccdcbf4
SHA256

7ffcb9f6daf4464de0fc3d659e47b76673c16c0f864ad0d2d1ac40f4b295ddfb
SHA512

a6012888e7585c8e6432bee2273b1671ac740dfb70e20b92e3b9daa315c0b4621e31f7edbb15fca7aaed46bfa71bf49cbf40f838d325f4112aa1db1fae480481

Score

10^/10

neshta persistence spyware stealer suricata

Malware Config

Signatures

Detect Neshta Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2044-71-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2044-72-0x00000000004080E4-mapping.dmp	family_neshta
behavioral1/memory/2044-76-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

vbc.exe

description 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.
persistence spyware neshta
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata
Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1404 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

548 vbc.exe
2044 vbc.exe
Loads dropped DLL 6 IoCs

Processes:

EQNEDT32.EXEvbc.exe

pid process

1404 EQNEDT32.EXE
1404 EQNEDT32.EXE
1404 EQNEDT32.EXE
1404 EQNEDT32.EXE
2044 vbc.exe
2044 vbc.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 548 set thread context of 2044 548 vbc.exe vbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	vbc.exe

flow	pid	process
3	1404	EQNEDT32.EXE

pid	process
548	vbc.exe
2044	vbc.exe

pid	process
1404	EQNEDT32.EXE
1404	EQNEDT32.EXE
1404	EQNEDT32.EXE
1404	EQNEDT32.EXE
2044	vbc.exe
2044	vbc.exe

description	pid	process	target process
PID 548 set thread context of 2044	548	vbc.exe	vbc.exe

Drops file in Program Files directory 64 IoCs

Processes:

vbc.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.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\MSTORDB.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.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\WINDOW~1\wabmig.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.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\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.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\misc.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\Reader\ACROBR~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\MICROS~1\Office14\XLICONS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.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\IECONT~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.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\WMPDMC.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.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\{F4220~1\VC_RED~1.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\DW\DW20.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\Google\Update\DISABL~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.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\MAINTE~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\OFFICE14\Oarpmany.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.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\setup_wm.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\GOOGLE~1.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\ACCICONS.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\INFOPATH.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.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\Adobe\READER~1.0\Resource\Icons\SC_REA~1.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\OIS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.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\ADOBEC~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.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\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.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.exe

description 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.

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description 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.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1404 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Windows\svchost.com	vbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
1404	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
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\Se&nd to OneNote	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
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 deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\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\shell\edit\COMMAND	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML 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
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	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\edit	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	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
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
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 MHTML Editor\shell	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	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\edit\COMMAND	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\command	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	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\.htm\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic	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\OpenWithList\Microsoft Excel\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\""	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	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\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\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\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\.htm\OpenWithList\Microsoft Publisher\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe	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	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
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	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	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\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1144 EXCEL.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1144 EXCEL.EXE
1144 EXCEL.EXE
1144 EXCEL.EXE
1144 EXCEL.EXE
1144 EXCEL.EXE

pid	process
1144	EXCEL.EXE

pid	process
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 1404 wrote to memory of 548	1404	EQNEDT32.EXE	vbc.exe
PID 1404 wrote to memory of 548	1404	EQNEDT32.EXE	vbc.exe
PID 1404 wrote to memory of 548	1404	EQNEDT32.EXE	vbc.exe
PID 1404 wrote to memory of 548	1404	EQNEDT32.EXE	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe
PID 548 wrote to memory of 2044	548	vbc.exe	vbc.exe

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\PO 20212702.xlsx"
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1144

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1404

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:548

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
PID:2044

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Scripting

T1064

Persistence

Change Default File Association

T1042

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\MICROS~1\Windows\TEMPOR~1\Content.IE5\K8CH4PHC\VBC_1_~1.EXE
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
C:\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
C:\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
C:\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
\Users\Public\vbc.exe
MD5
fd31986696a39355b9e100754b4724e3

SHA1
4f1045ce5437b5a761c02a1446c0defd89280ddb

SHA256
a58aca3d20dec5c5f100ade6a9f6182f5f7a783f8269cb032e20780041e44f08

SHA512
bbb78d8f77973f2349a0a82e3e9ab046b79cdd37053375c5d21b7297c36b587e0809bced70f38d4d621af28f04fdca5701c294e04d4cf04f09582ada580a7ffb

Download Submit
memory/548-69-0x0000000005FF0000-0x0000000006057000-memory.dmp

Filesize
412KB

Download
memory/548-65-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/548-67-0x00000000048A0000-0x00000000048A1000-memory.dmp

Filesize
4KB

Download
memory/548-68-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/548-70-0x0000000001EE0000-0x0000000001F17000-memory.dmp

Filesize
220KB

Download
memory/548-62-0x0000000000000000-mapping.dmp

Download
memory/1144-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1144-79-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1144-54-0x000000002F111000-0x000000002F114000-memory.dmp

Filesize
12KB

Download
memory/1144-55-0x0000000071481000-0x0000000071483000-memory.dmp

Filesize
8KB

Download
memory/1404-57-0x0000000076581000-0x0000000076583000-memory.dmp

Filesize
8KB

Download
memory/2044-71-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2044-76-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2044-72-0x00000000004080E4-mapping.dmp

Download