formbook | c07f1a20f4ec699e3f2eedff1e2c08501ab1ab93d4651edac4fd0f950e02fb89

Analysis

max time kernel
147s
max time network
173s
platform
windows7_x64
resource
win7-en-20210920
submitted
28-10-2021 09:57

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General

Target

INVOICE56K.xlsx
Size

443KB
MD5

4cdf1a31c469b31f3a8beb518ea7463c
SHA1

b44fb9c8b59ad5c465c9c30ada4f768247460c30
SHA256

c07f1a20f4ec699e3f2eedff1e2c08501ab1ab93d4651edac4fd0f950e02fb89
SHA512

762a1d304b1633cdf53c9dabd627e25ad5fc86cb7f5644178c9d7cc81b607db9d1e422a44fd5ea84217779c94a14459a2ddfcb9c41bb042267b30a90e5d74d5c

Score

10^/10

formbook hs3h evasion rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

hs3h

http://www.alefisrael.com/hs3h/

Decoy

slairt.com

teresasellsflorida.com

resouthcarolina.com

npccfbf.com

hutshed.com

westatesmarking.com

rustmonkeys.com

kagawa-rentacar.com

easyvoip-system.com

admorinsulation.com

ericaleighjensen.com

zhonghaojiaju.net

apple-iphone.xyz

b0t.info

torgetmc.xyz

lawrencemargarse.com

6123655.com

macdonalds-delivery.com

cvpfl.com

ayudaparaturent.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1520-80-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1520-81-0x000000000041F1A0-mapping.dmp	formbook
behavioral1/memory/300-89-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

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

4 1508 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

vbc.exevbc.exevbc.exe

pid process

1716 vbc.exe
1524 vbc.exe
1520 vbc.exe
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

flow	pid	process
4	1508	EQNEDT32.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 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1508 EQNEDT32.EXE
1508 EQNEDT32.EXE
1508 EQNEDT32.EXE
1508 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1508	EQNEDT32.EXE
1508	EQNEDT32.EXE
1508	EQNEDT32.EXE
1508	EQNEDT32.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 3 IoCs

Processes:

vbc.exevbc.exewlanext.exe

description	pid	process	target process
PID 1716 set thread context of 1520	1716	vbc.exe	vbc.exe
PID 1520 set thread context of 1208	1520	vbc.exe	Explorer.EXE
PID 300 set thread context of 1208	300	wlanext.exe	Explorer.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

864 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

1508 EQNEDT32.EXE

pid	process
864	schtasks.exe

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

pid	process
1508	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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\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 MHTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\Toolbar	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
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	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\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
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\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (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\edit\COMMAND	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default 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\htmlfile\shell	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\ShellEx	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit	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\.mht\OpenWithList\Excel.exe\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version	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\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohevi.dll"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command	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\Microsoft Excel\shell\edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ThreadingModel = "Apartment"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\ = "&Edit"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	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\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	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}\InprocServer32	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit	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\Microsoft Excel	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\.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\.mht\OpenWithList\Microsoft Publisher\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\mhtmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	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 Word\shell\edit\command	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	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	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

484 EXCEL.EXE

pid	process
484	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

vbc.exevbc.exewlanext.exe

pid	process
1716	vbc.exe
1716	vbc.exe
1716	vbc.exe
1520	vbc.exe
1520	vbc.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe
300	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exewlanext.exe

pid process

1520 vbc.exe
1520 vbc.exe
1520 vbc.exe
300 wlanext.exe
300 wlanext.exe

pid	process
1208	Explorer.EXE

pid	process
1520	vbc.exe
1520	vbc.exe
1520	vbc.exe
300	wlanext.exe
300	wlanext.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

vbc.exevbc.exewlanext.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1716	vbc.exe
Token: SeDebugPrivilege	1520	vbc.exe
Token: SeDebugPrivilege	300	wlanext.exe
Token: SeShutdownPrivilege	1208	Explorer.EXE
Token: SeShutdownPrivilege	1208	Explorer.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

484 EXCEL.EXE
484 EXCEL.EXE
484 EXCEL.EXE

pid	process
484	EXCEL.EXE
484	EXCEL.EXE
484	EXCEL.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1508 wrote to memory of 1716	1508	EQNEDT32.EXE	vbc.exe
PID 1508 wrote to memory of 1716	1508	EQNEDT32.EXE	vbc.exe
PID 1508 wrote to memory of 1716	1508	EQNEDT32.EXE	vbc.exe
PID 1508 wrote to memory of 1716	1508	EQNEDT32.EXE	vbc.exe
PID 1716 wrote to memory of 864	1716	vbc.exe	schtasks.exe
PID 1716 wrote to memory of 864	1716	vbc.exe	schtasks.exe
PID 1716 wrote to memory of 864	1716	vbc.exe	schtasks.exe
PID 1716 wrote to memory of 864	1716	vbc.exe	schtasks.exe
PID 1716 wrote to memory of 1524	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1524	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1524	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1524	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1716 wrote to memory of 1520	1716	vbc.exe	vbc.exe
PID 1208 wrote to memory of 300	1208	Explorer.EXE	wlanext.exe
PID 1208 wrote to memory of 300	1208	Explorer.EXE	wlanext.exe
PID 1208 wrote to memory of 300	1208	Explorer.EXE	wlanext.exe
PID 1208 wrote to memory of 300	1208	Explorer.EXE	wlanext.exe
PID 300 wrote to memory of 1688	300	wlanext.exe	cmd.exe
PID 300 wrote to memory of 1688	300	wlanext.exe	cmd.exe
PID 300 wrote to memory of 1688	300	wlanext.exe	cmd.exe
PID 300 wrote to memory of 1688	300	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208

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\INVOICE56K.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:484

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:300

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1688

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:1508

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:1716

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oQZXiOIDrQPPf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD28B.tmp"
3⤵
- Creates scheduled task(s)
PID:864

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
PID:1524

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1520

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Scheduled Task

T1053

Exploitation for Client Execution

T1203

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Peripheral Device Discovery

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD28B.tmp
MD5
459d0e01c3636278c680f75e17ed98fe

SHA1
10e85612945deb0427530dc921ef114e98ccb895

SHA256
2604844aecc6f95c7636b9a54332468132d559972e3e0e9581a1d5cd324005c7

SHA512
11b44481960007fa089e1eb27e8b6aff7ed98834484460921f44aa60dad9d83cdb0ae0101a8c6aa5bf1109013c0957b3b107a70a300c6579f980e9f34a2bd64c

Download Submit
C:\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
C:\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
C:\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
C:\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
\Users\Public\vbc.exe
MD5
f6741a7f14669cbb4dffc16029381a91

SHA1
194f199276d7e60a7063b4afc0fe784ff360c2ce

SHA256
63ff4d686692c112bd815c4b1d6c61c397909ad53f160981af6f3fb0e97bebc2

SHA512
d5965d89ea0e2c66b4bb0b3f5cf1ad027599774de8c57cc3ca62588efe66766b3986433dc95e03de7235f69a1b0b1bdac53ee3d990aa2b7457829b157ea62fdc

Download Submit
memory/300-92-0x00000000008D0000-0x0000000000964000-memory.dmp

Filesize
592KB

Download
memory/300-90-0x0000000002060000-0x0000000002363000-memory.dmp

Filesize
3.0MB

Download
memory/300-89-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/300-88-0x0000000000C40000-0x0000000000C56000-memory.dmp

Filesize
88KB

Download
memory/300-87-0x0000000000000000-mapping.dmp

Download
memory/484-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-54-0x000000002FD61000-0x000000002FD64000-memory.dmp

Filesize
12KB

Download
memory/484-94-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/484-69-0x0000000005F10000-0x0000000006B5A000-memory.dmp

Filesize
12.3MB

Download
memory/484-68-0x0000000005F10000-0x0000000006B5A000-memory.dmp

Filesize
12.3MB

Download
memory/484-55-0x0000000071141000-0x0000000071143000-memory.dmp

Filesize
8KB

Download
memory/484-70-0x0000000005F10000-0x0000000006B5A000-memory.dmp

Filesize
12.3MB

Download
memory/864-75-0x0000000000000000-mapping.dmp

Download
memory/1208-93-0x0000000006D70000-0x0000000006EBC000-memory.dmp

Filesize
1.3MB

Download
memory/1208-86-0x00000000068C0000-0x00000000069CA000-memory.dmp

Filesize
1.0MB

Download
memory/1508-57-0x00000000757B1000-0x00000000757B3000-memory.dmp

Filesize
8KB

Download
memory/1520-84-0x0000000000990000-0x0000000000C93000-memory.dmp

Filesize
3.0MB

Download
memory/1520-78-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1520-81-0x000000000041F1A0-mapping.dmp

Download
memory/1520-85-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/1520-80-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1520-79-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1688-91-0x0000000000000000-mapping.dmp

Download
memory/1716-67-0x00000000047A0000-0x00000000047A1000-memory.dmp

Filesize
4KB

Download
memory/1716-65-0x0000000000900000-0x0000000000901000-memory.dmp

Filesize
4KB

Download
memory/1716-72-0x0000000000420000-0x000000000042E000-memory.dmp

Filesize
56KB

Download
memory/1716-73-0x0000000007EC0000-0x0000000007F40000-memory.dmp

Filesize
512KB

Download
memory/1716-62-0x0000000000000000-mapping.dmp

Download
memory/1716-74-0x00000000020D0000-0x0000000002101000-memory.dmp

Filesize
196KB

Download
memory/1716-71-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download