neshta | d590113d786474dda028703f5cf2dbf1e2f4c03ae06e4032af83bdefaa670216

Analysis

max time kernel
101s
max time network
42s
platform
windows7_x64
resource
win7-en-20210916
submitted
17-09-2021 13:02

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General

Target

672300912.xlsx
Size

588KB
MD5

f45c96d01984b479b9c586f7686e0727
SHA1

4a0293afdd747d2b75bc686e6d2556a6271dc413
SHA256

d590113d786474dda028703f5cf2dbf1e2f4c03ae06e4032af83bdefaa670216
SHA512

2f6ceebc0872412716780f872303f3b1363c684ebc11c7c0771748d390ec37acd2c652f779e262622e9a9aec26a11a6ab99993255b5503059ca2cc1aa0d51fc5

Score

10^/10

neshta evasion persistence spyware

Malware Config

Signatures

Detect Neshta Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1688-73-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/1688-74-0x00000000004080E4-mapping.dmp	family_neshta
behavioral1/memory/1688-76-0x0000000000400000-0x000000000041B000-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
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1128 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

vbc.exe

pid process

1768 vbc.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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	1128	EQNEDT32.EXE

pid	process
1768	vbc.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

vbc.exe

description	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.exe

pid process

1128 EQNEDT32.EXE
1128 EQNEDT32.EXE
1128 EQNEDT32.EXE
1128 EQNEDT32.EXE
1688 vbc.exe
1688 vbc.exe
1688 vbc.exe
1688 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1128	EQNEDT32.EXE
1128	EQNEDT32.EXE
1128	EQNEDT32.EXE
1128	EQNEDT32.EXE
1688	vbc.exe
1688	vbc.exe
1688	vbc.exe
1688	vbc.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vbc.exe

description	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.exe

description pid process target process

PID 1768 set thread context of 1688 1768 vbc.exe vbc.exe

description	pid	process	target process
PID 1768 set thread context of 1688	1768	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\Adobe\READER~1.0\Reader\ADOBEC~1.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\GROOVEMN.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\SELFCERT.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\OFFICE~1\Setup.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.102\GOOGLE~4.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\ieinstal.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\WI54FB~1\wmlaunch.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\Google\Update\1336~1.102\GO664E~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.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\WI4223~1\sidebar.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\INTERN~1\ielowutil.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\WI54FB~1\WMPDMC.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.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\COMMON~1\MICROS~1\OFFICE14\FLTLDR.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\INFOPATH.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\VSTO\10.0\VSTOIN~1.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\POWERPNT.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\Adobe\READER~1.0\Reader\LOGTRA~1.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\OFFICE14\LICLUA.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\PPTICO.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\EQUATION\EQNEDT32.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.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\Adobe\READER~1.0\Reader\A3DUTI~1.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\SOURCE~1\OSE.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.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\TextConv\WksConv\Wkconv.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.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\WI54FB~1\wmprph.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\Google\Update\1336~1.102\GOFB2B~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\MICROS~1\Office14\OIS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\GOOGLE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.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\Reader\AcroRd32.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\MSInfo\msinfo32.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.102\GOOGLE~1.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1504 schtasks.exe
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

1128 EQNEDT32.EXE

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

pid	process
1504	schtasks.exe

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

pid	process
1128	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-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key 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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	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 HTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	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
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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	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 deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	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 HTML Editor	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	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\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2375386074-2889020035-839874990-1000\Software\Microsoft\Internet Explorer\MenuExt	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\COMMAND	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	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

Modifies registry class 64 IoCs

Processes:

EXCEL.EXEvbc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	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 Word	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec	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\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application	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\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit	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\shell\Print\command	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\Excel.exe\shell\edit\ddeexec\topic	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command	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\MSPub.exe\shell\edit\ = "&Open"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.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\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ = "&Open"	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\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1868 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

vbc.exe

pid process

1768 vbc.exe
1768 vbc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

vbc.exe

description pid process

Token: SeDebugPrivilege 1768 vbc.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

1868 EXCEL.EXE
1868 EXCEL.EXE
1868 EXCEL.EXE
1868 EXCEL.EXE
1868 EXCEL.EXE

pid	process
1868	EXCEL.EXE

pid	process
1768	vbc.exe
1768	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1768	vbc.exe

pid	process
1868	EXCEL.EXE
1868	EXCEL.EXE
1868	EXCEL.EXE
1868	EXCEL.EXE
1868	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 1128 wrote to memory of 1768	1128	EQNEDT32.EXE	vbc.exe
PID 1128 wrote to memory of 1768	1128	EQNEDT32.EXE	vbc.exe
PID 1128 wrote to memory of 1768	1128	EQNEDT32.EXE	vbc.exe
PID 1128 wrote to memory of 1768	1128	EQNEDT32.EXE	vbc.exe
PID 1768 wrote to memory of 1504	1768	vbc.exe	schtasks.exe
PID 1768 wrote to memory of 1504	1768	vbc.exe	schtasks.exe
PID 1768 wrote to memory of 1504	1768	vbc.exe	schtasks.exe
PID 1768 wrote to memory of 1504	1768	vbc.exe	schtasks.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	vbc.exe	vbc.exe
PID 1768 wrote to memory of 1688	1768	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\672300912.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1868

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:1128

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:1768

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmp67B7.tmp"
3⤵
- Creates scheduled task(s)
PID:1504

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
- Modifies registry class
PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Scheduled Task

T1053

Scripting

T1064

Persistence

Change Default File Association

T1042

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\MICROS~1\Windows\TEMPOR~1\Content.IE5\UL9KF5IE\VBC_1_~1.EXE
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
C:\Users\Admin\AppData\Roaming\PaJrxje.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
C:\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
C:\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

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

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Admin\AppData\Local\MICROS~1\Windows\TEMPOR~1\Content.IE5\UL9KF5IE\VBC_1_~1.EXE
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Admin\AppData\Roaming\PaJrxje.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\Users\Public\vbc.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
memory/1128-56-0x0000000074AC1000-0x0000000074AC3000-memory.dmp

Filesize
8KB

Download
memory/1504-72-0x0000000000000000-mapping.dmp

Download
memory/1688-76-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1688-73-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1688-74-0x00000000004080E4-mapping.dmp

Download
memory/1768-66-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/1768-70-0x00000000057A0000-0x0000000005844000-memory.dmp

Filesize
656KB

Download
memory/1768-71-0x0000000005850000-0x00000000058D0000-memory.dmp

Filesize
512KB

Download
memory/1768-61-0x0000000000000000-mapping.dmp

Download
memory/1768-64-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/1768-67-0x00000000004D0000-0x00000000004D7000-memory.dmp

Filesize
28KB

Download
memory/1868-69-0x0000000006190000-0x0000000006DDA000-memory.dmp

Filesize
12.3MB

Download
memory/1868-53-0x000000002F681000-0x000000002F684000-memory.dmp

Filesize
12KB

Download
memory/1868-68-0x0000000006190000-0x0000000006DDA000-memory.dmp

Filesize
12.3MB

Download
memory/1868-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1868-54-0x0000000070DD1000-0x0000000070DD3000-memory.dmp

Filesize
8KB

Download
memory/1868-83-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download