formbook | cc5b8184b5f785130a42a53b8600a5d12721f49ee6949d93e3a3722f98604135

General

Target

KOC BQ-2022-PROC-SI-68.xlsx
Size

110KB
MD5

21889c7c54d86bd8b3e376a8f23e068c
SHA1

433870de72541bf95aa33bdd8d03f7039a30e853
SHA256

cc5b8184b5f785130a42a53b8600a5d12721f49ee6949d93e3a3722f98604135
SHA512

9fc8f6f489a9b13e2fef8a52927d582e5088313a2d1ea35097ab40fea68b949c337bb26f08fac97b981896e7e45c72dc4fbf06d9d9b046c754a5c9a5d2551df9

Score

10^/10

formbook s4s9 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

s4s9

Decoy

qianyuandianshang.com

bernardklein.com

slhomeservices.com

findasaas.com

janellelancaster.xyz

umkpro.site

nr6949.online

mersquare.club

lanariproperties.com

3rdeyefocused.com

giftexpress8260.xyz

hilleleven.xyz

beajod.com

kosazs.online

ishare.team

mb314.com

xjjinxingda.com

ayekooprojectamazing.com

ballsybanter.com

todayshoppingbd.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
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

Formbook payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/544-81-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/544-82-0x000000000041F0E0-mapping.dmp	formbook
behavioral1/memory/544-84-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1680-91-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1680-96-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1256 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

Regasm_svchost.exe

pid process

1752 Regasm_svchost.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1256 EQNEDT32.EXE
1256 EQNEDT32.EXE
1256 EQNEDT32.EXE
1256 EQNEDT32.EXE

flow	pid	process
3	1256	EQNEDT32.EXE

pid	process
1752	Regasm_svchost.exe

pid	process
1256	EQNEDT32.EXE
1256	EQNEDT32.EXE
1256	EQNEDT32.EXE
1256	EQNEDT32.EXE

Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Regasm_svchost.exeMSBuild.exeNETSTAT.EXE

description	pid	process	target process
PID 1752 set thread context of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 544 set thread context of 1244	544	MSBuild.exe	Explorer.EXE
PID 1680 set thread context of 1244	1680	NETSTAT.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
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
Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

NETSTAT.EXE

pid process

1680 NETSTAT.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

1256 EQNEDT32.EXE

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

pid	process
1680	NETSTAT.EXE

pid	process
1256	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	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-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key deleted	\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 (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\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	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	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	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\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
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
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\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 (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 HTML Editor\shell\edit\command	EXCEL.EXE
Key created	\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-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

272 EXCEL.EXE

pid	process
272	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

powershell.exeRegasm_svchost.exeMSBuild.exeNETSTAT.EXE

pid	process
604	powershell.exe
1752	Regasm_svchost.exe
1752	Regasm_svchost.exe
1752	Regasm_svchost.exe
1752	Regasm_svchost.exe
1752	Regasm_svchost.exe
1752	Regasm_svchost.exe
544	MSBuild.exe
544	MSBuild.exe
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE
1680	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exeNETSTAT.EXE

pid process

544 MSBuild.exe
544 MSBuild.exe
544 MSBuild.exe
1680 NETSTAT.EXE
1680 NETSTAT.EXE

pid	process
544	MSBuild.exe
544	MSBuild.exe
544	MSBuild.exe
1680	NETSTAT.EXE
1680	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Regasm_svchost.exepowershell.exeMSBuild.exeNETSTAT.EXEExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1752	Regasm_svchost.exe
Token: SeDebugPrivilege	604	powershell.exe
Token: SeDebugPrivilege	544	MSBuild.exe
Token: SeDebugPrivilege	1680	NETSTAT.EXE
Token: SeShutdownPrivilege	1244	Explorer.EXE
Token: SeShutdownPrivilege	1244	Explorer.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

272 EXCEL.EXE
272 EXCEL.EXE
272 EXCEL.EXE

pid	process
272	EXCEL.EXE
272	EXCEL.EXE
272	EXCEL.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

EQNEDT32.EXERegasm_svchost.exeExplorer.EXENETSTAT.EXE

description	pid	process	target process
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1256 wrote to memory of 1752	1256	EQNEDT32.EXE	Regasm_svchost.exe
PID 1752 wrote to memory of 604	1752	Regasm_svchost.exe	powershell.exe
PID 1752 wrote to memory of 604	1752	Regasm_svchost.exe	powershell.exe
PID 1752 wrote to memory of 604	1752	Regasm_svchost.exe	powershell.exe
PID 1752 wrote to memory of 604	1752	Regasm_svchost.exe	powershell.exe
PID 1752 wrote to memory of 1552	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 1552	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 1552	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 1552	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1752 wrote to memory of 544	1752	Regasm_svchost.exe	MSBuild.exe
PID 1244 wrote to memory of 1680	1244	Explorer.EXE	NETSTAT.EXE
PID 1244 wrote to memory of 1680	1244	Explorer.EXE	NETSTAT.EXE
PID 1244 wrote to memory of 1680	1244	Explorer.EXE	NETSTAT.EXE
PID 1244 wrote to memory of 1680	1244	Explorer.EXE	NETSTAT.EXE
PID 1680 wrote to memory of 1376	1680	NETSTAT.EXE	cmd.exe
PID 1680 wrote to memory of 1376	1680	NETSTAT.EXE	cmd.exe
PID 1680 wrote to memory of 1376	1680	NETSTAT.EXE	cmd.exe
PID 1680 wrote to memory of 1376	1680	NETSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1244

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\KOC BQ-2022-PROC-SI-68.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:272

C:\Windows\SysWOW64\NETSTAT.EXE
"C:\Windows\SysWOW64\NETSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1680

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1376

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:1256

C:\Users\Public\Regasm_svchost.exe
"C:\Users\Public\Regasm_svchost.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgA=
3⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:604

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
3⤵
PID:1552

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:544

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
C:\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
\Users\Public\Regasm_svchost.exe
Filesize
117KB

MD5
84027b4369d1b4c2e5eca6074423c9ca

SHA1
8290d7fe37cd0741a138374b95bfadf914ebab41

SHA256
5a60c47e31c4bfd7eff0b53c4793249b33a177d669e2e781418c6dcb2bac0f7c

SHA512
988700439adac4e2869485d55578798f4ba565649c231bbbdd6359f262a5afec90c79465f752c39dc7f7d3fd18268cd58ac26b2dabc7af1b76ebc06a2a480f43

Download Submit
memory/272-57-0x000000007223D000-0x0000000072248000-memory.dmp

Filesize
44KB

Download
memory/272-58-0x0000000075DC1000-0x0000000075DC3000-memory.dmp

Filesize
8KB

Download
memory/272-76-0x000000007223D000-0x0000000072248000-memory.dmp

Filesize
44KB

Download
memory/272-99-0x000000007223D000-0x0000000072248000-memory.dmp

Filesize
44KB

Download
memory/272-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/272-55-0x0000000071251000-0x0000000071253000-memory.dmp

Filesize
8KB

Download
memory/272-98-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/272-54-0x000000002F8E1000-0x000000002F8E4000-memory.dmp

Filesize
12KB

Download
memory/544-78-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/544-85-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/544-86-0x00000000001C0000-0x00000000001D4000-memory.dmp

Filesize
80KB

Download
memory/544-79-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/544-81-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/544-82-0x000000000041F0E0-mapping.dmp

Download
memory/544-84-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/604-74-0x0000000004BA0000-0x0000000004E72000-memory.dmp

Filesize
2.8MB

Download
memory/604-75-0x0000000067590000-0x0000000067B3B000-memory.dmp

Filesize
5.7MB

Download
memory/604-71-0x0000000000000000-mapping.dmp

Download
memory/604-77-0x0000000067590000-0x0000000067B3B000-memory.dmp

Filesize
5.7MB

Download
memory/1244-87-0x0000000006B70000-0x0000000006C41000-memory.dmp

Filesize
836KB

Download
memory/1244-94-0x0000000006B70000-0x0000000006C41000-memory.dmp

Filesize
836KB

Download
memory/1244-101-0x000007FF0FA60000-0x000007FF0FA6A000-memory.dmp

Filesize
40KB

Download
memory/1244-100-0x000007FEF6540000-0x000007FEF6683000-memory.dmp

Filesize
1.3MB

Download
memory/1244-97-0x0000000007090000-0x0000000007157000-memory.dmp

Filesize
796KB

Download
memory/1244-95-0x0000000007090000-0x0000000007157000-memory.dmp

Filesize
796KB

Download
memory/1376-89-0x0000000000000000-mapping.dmp

Download
memory/1680-90-0x0000000000200000-0x0000000000209000-memory.dmp

Filesize
36KB

Download
memory/1680-93-0x0000000001EC0000-0x0000000001F53000-memory.dmp

Filesize
588KB

Download
memory/1680-92-0x0000000002300000-0x0000000002603000-memory.dmp

Filesize
3.0MB

Download
memory/1680-91-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1680-96-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1680-88-0x0000000000000000-mapping.dmp

Download
memory/1752-69-0x00000000001D0000-0x0000000000248000-memory.dmp

Filesize
480KB

Download
memory/1752-67-0x0000000001330000-0x0000000001352000-memory.dmp

Filesize
136KB

Download
memory/1752-64-0x0000000000000000-mapping.dmp

Download
memory/1752-70-0x00000000052C0000-0x0000000005352000-memory.dmp

Filesize
584KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads