matiex | c9ced202bb7bf9e49e3cca8da6d6154aee9f10d54fb4e88735a7230f988df885

Analysis

max time kernel
142s
max time network
120s
platform
windows7_x64
resource
win7-en-20211014
submitted
07-12-2021 11:24

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General

Target

Order .xlsx
Size

228KB
MD5

c2fac2ea47b1e31d976cd6850258c64f
SHA1

a3a2865d95140d64c1798dcda1377fc1f6753451
SHA256

c9ced202bb7bf9e49e3cca8da6d6154aee9f10d54fb4e88735a7230f988df885
SHA512

bcd0ec83237c46f9b1c48a712f09ca4d1e91ae0af053f2f1333e50eb0d5f6b0a9c623105cb6a46422fb0e4856bc3d76c3a2156d0bb8622492e430bd4d8a31763

Score

10^/10

matiex collection keylogger spyware stealer suricata

Malware Config

Extracted

Family

matiex

https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933

Signatures

Matiex
Matiex is a keylogger and infostealer first seen in July 2020.
stealer keylogger matiex

Matiex Main Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-67-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral1/memory/1964-68-0x000000000040188B-mapping.dmp	family_matiex
behavioral1/memory/1964-71-0x0000000000400000-0x0000000000484000-memory.dmp	family_matiex
behavioral1/memory/1964-72-0x0000000004470000-0x00000000044DF000-memory.dmp	family_matiex

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

4 1428 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1492 vbc.exe
1964 vbc.exe
Loads dropped DLL 7 IoCs

Processes:

EQNEDT32.EXEvbc.exeWerFault.exe

pid process

1428 EQNEDT32.EXE
1428 EQNEDT32.EXE
1428 EQNEDT32.EXE
1492 vbc.exe
1612 WerFault.exe
1612 WerFault.exe
1612 WerFault.exe
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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

flow	pid	process
4	1428	EQNEDT32.EXE

pid	process
1492	vbc.exe
1964	vbc.exe

pid	process
1428	EQNEDT32.EXE
1428	EQNEDT32.EXE
1428	EQNEDT32.EXE
1492	vbc.exe
1612	WerFault.exe
1612	WerFault.exe
1612	WerFault.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

5 checkip.dyndns.org
7 freegeoip.app
8 freegeoip.app
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1492 set thread context of 1964 1492 vbc.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1612 1964 WerFault.exe vbc.exe

flow	ioc
5	checkip.dyndns.org
7	freegeoip.app
8	freegeoip.app

description	pid	process	target process
PID 1492 set thread context of 1964	1492	vbc.exe	vbc.exe

pid	pid_target	process	target process
1612	1964	WerFault.exe	vbc.exe

NSIS installer 18 IoCs

installer

Processes:

resource	yara_rule
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2
C:\Users\Public\vbc.exe	nsis_installer_1
C:\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2
\Users\Public\vbc.exe	nsis_installer_1
\Users\Public\vbc.exe	nsis_installer_2

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

1428 EQNEDT32.EXE

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

pid	process
1428	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Key created	\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	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\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\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	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	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 MHTML Editor	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	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\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 created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	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 HTML 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 deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\ = "&Edit"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe	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
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx	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 (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\ = "&Edit"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\ = "&Open"	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\htmlfile	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.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\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
Set value (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\htmlfile\shell\Edit	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit	EXCEL.EXE
Key deleted	\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\htmlfile\ShellEx	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	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\Microsoft Word\shell\edit\command	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\.mht\OpenWithList\Excel.exe\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	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\.mht\OpenWithList\MSPub.exe	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	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\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	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\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ = "&Open"	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\Microsoft Publisher	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1588 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

WerFault.exe

pid process

1612 WerFault.exe
1612 WerFault.exe
1612 WerFault.exe
1612 WerFault.exe
1612 WerFault.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1612 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeWerFault.exe

description pid process

Token: SeDebugPrivilege 1964 vbc.exe
Token: SeDebugPrivilege 1612 WerFault.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1588 EXCEL.EXE
1588 EXCEL.EXE
1588 EXCEL.EXE

pid	process
1588	EXCEL.EXE

pid	process
1612	WerFault.exe
1612	WerFault.exe
1612	WerFault.exe
1612	WerFault.exe
1612	WerFault.exe

pid	process
1612	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	1964	vbc.exe
Token: SeDebugPrivilege	1612	WerFault.exe

pid	process
1588	EXCEL.EXE
1588	EXCEL.EXE
1588	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exevbc.exe

description	pid	process	target process
PID 1428 wrote to memory of 1492	1428	EQNEDT32.EXE	vbc.exe
PID 1428 wrote to memory of 1492	1428	EQNEDT32.EXE	vbc.exe
PID 1428 wrote to memory of 1492	1428	EQNEDT32.EXE	vbc.exe
PID 1428 wrote to memory of 1492	1428	EQNEDT32.EXE	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1492 wrote to memory of 1964	1492	vbc.exe	vbc.exe
PID 1964 wrote to memory of 1612	1964	vbc.exe	WerFault.exe
PID 1964 wrote to memory of 1612	1964	vbc.exe	WerFault.exe
PID 1964 wrote to memory of 1612	1964	vbc.exe	WerFault.exe
PID 1964 wrote to memory of 1612	1964	vbc.exe	WerFault.exe

outlook_office_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	vbc.exe

outlook_win_path 1 IoCs

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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\Order .xlsx"
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1588

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:1428

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1492

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 1668
4⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1612

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
C:\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
C:\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Admin\AppData\Local\Temp\nsy29DF.tmp\rdhfmntmn.dll
MD5
f8dcfcb741cfb789c8ac705cb7f69d81

SHA1
bc0b5eea603016766c1e4d03ed8a9c758fb01652

SHA256
10d18893a9d787122213566203de198c54274f8c63825065812378d364d3620a

SHA512
5bc9a735e1dddbee74ac3cee43ecf4f469b2108966b2f914e474c7fa3205498900f2cb761f10eae45cfa9fa20bee500e223a8633f210914de23a0af6b385118d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
\Users\Public\vbc.exe
MD5
cff383a9c4716e6ce935e3b4132cef34

SHA1
95fb309753bdb273b8da6cfef6bd7af012d7d11f

SHA256
32de63f0ac703c7d654d2676af0b2b3fa08dced0bc918318a9d642a696a6a91c

SHA512
2dd9e08b8539b0bb27bd4a295accb8c48fc22ca34798df23058ee4bc86249b79efecf2b65cd30f71ddb3bd2bb068038163e4302b69bed7160f905897f9c5432d

Download Submit
memory/1428-58-0x0000000075321000-0x0000000075323000-memory.dmp

Filesize
8KB

Download
memory/1492-62-0x0000000000000000-mapping.dmp

Download
memory/1588-57-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1588-83-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1588-55-0x000000002F0E1000-0x000000002F0E4000-memory.dmp

Filesize
12KB

Download
memory/1588-56-0x00000000715D1000-0x00000000715D3000-memory.dmp

Filesize
8KB

Download
memory/1612-78-0x0000000000000000-mapping.dmp

Download
memory/1612-82-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1964-68-0x000000000040188B-mapping.dmp

Download
memory/1964-74-0x00000000045F1000-0x00000000045F2000-memory.dmp

Filesize
4KB

Download
memory/1964-77-0x00000000045F4000-0x00000000045F5000-memory.dmp

Filesize
4KB

Download
memory/1964-75-0x00000000045F2000-0x00000000045F3000-memory.dmp

Filesize
4KB

Download
memory/1964-76-0x00000000045F3000-0x00000000045F4000-memory.dmp

Filesize
4KB

Download
memory/1964-72-0x0000000004470000-0x00000000044DF000-memory.dmp

Filesize
444KB

Download
memory/1964-71-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download
memory/1964-67-0x0000000000400000-0x0000000000484000-memory.dmp

Filesize
528KB

Download