formbook | 48af10595cf68328465412bae7225b4c5da1f4394ddaa58735b15e062c502329

Analysis

max time kernel
158s
max time network
163s
platform
windows7_x64
resource
win7-20220414-en
submitted
13-05-2022 14:33

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General

Target

decrypted.xlsx
Size

177KB
MD5

ed6cfe2f33c53a2f00b89df64378d92d
SHA1

9887eb84bad60aeb24118f376ed20653b529ff01
SHA256

8bd763832d675d199f3e2b74daf55d3e575a6f1c40b9e51f00dfa2e7703d9d9d
SHA512

bb1182e7ba03becd8c2a6cfb911d1b9cf4dfe353320afd1053ed8094d5015cf1855480cb1f03c535920787dc250e880219f20b226f9ea2510e6e31a36277fec7

Score

10^/10

formbook xloader arh2 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

arh2

Decoy

hstorc.com

blackountry.com

dhrbakery.com

dezhouofit.com

defipayout.xyz

ginas4t.com

byzbh63.xyz

qrcrashview.com

mialibaby.com

enhaut.net

samainnova.com

yashveerresort.com

delfos.online

dungcumay.com

lj-counseling.net

fliptheswitch.pro

padogbitelawyer.com

aticarev.com

sederino.site

bestplansforpets-japan3.life

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral3/memory/1756-75-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral3/memory/1756-76-0x000000000041F270-mapping.dmp	xloader
behavioral3/memory/1756-79-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral3/memory/1772-87-0x0000000000080000-0x00000000000AB000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1684 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

vbc.exejcygjcnq.exejcygjcnq.exe

pid process

508 vbc.exe
968 jcygjcnq.exe
1756 jcygjcnq.exe
Loads dropped DLL 5 IoCs

Processes:

EQNEDT32.EXEvbc.exejcygjcnq.exe

pid process

1684 EQNEDT32.EXE
1684 EQNEDT32.EXE
1684 EQNEDT32.EXE
508 vbc.exe
968 jcygjcnq.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
3	1684	EQNEDT32.EXE

pid	process
508	vbc.exe
968	jcygjcnq.exe
1756	jcygjcnq.exe

pid	process
1684	EQNEDT32.EXE
1684	EQNEDT32.EXE
1684	EQNEDT32.EXE
508	vbc.exe
968	jcygjcnq.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\KRZXSZIXDLH = "C:\\Program Files (x86)\\Djvd0crw\\mfcd0ht3z9.exe"	mstsc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

jcygjcnq.exejcygjcnq.exemstsc.exe

description	pid	process	target process
PID 968 set thread context of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 1756 set thread context of 1188	1756	jcygjcnq.exe	Explorer.EXE
PID 1772 set thread context of 1188	1772	mstsc.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

mstsc.exe

description ioc process

File opened for modification C:\Program Files (x86)\Djvd0crw\mfcd0ht3z9.exe mstsc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1684 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Djvd0crw\mfcd0ht3z9.exe	mstsc.exe

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

pid	process
1684	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXEmstsc.exe

description	ioc	process
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 created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (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 MHTML Editor\shell	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	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 HTML Editor\shell	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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	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\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
Set value (int)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	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	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile	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\mhtmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe	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\.mht\OpenWithList\MSPub.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\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\ = "&Open"	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 Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\ = "&Open"	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\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler	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 Excel\shell\edit\ddeexec\application	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\ShellEx	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx	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\htmlfile\shell\Print	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\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application	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\htmlfile\DefaultIcon\ = "\"%1\""	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\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 Word\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\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	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\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
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\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	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\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\htmlfile	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1628 EXCEL.EXE

pid	process
1628	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

jcygjcnq.exemstsc.exe

pid	process
1756	jcygjcnq.exe
1756	jcygjcnq.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe
1772	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

jcygjcnq.exemstsc.exe

pid process

1756 jcygjcnq.exe
1756 jcygjcnq.exe
1756 jcygjcnq.exe
1772 mstsc.exe
1772 mstsc.exe
1772 mstsc.exe

pid	process
1188	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

jcygjcnq.exemstsc.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1756	jcygjcnq.exe
Token: SeDebugPrivilege	1772	mstsc.exe
Token: SeShutdownPrivilege	1188	Explorer.EXE
Token: SeShutdownPrivilege	1188	Explorer.EXE
Token: SeShutdownPrivilege	1188	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
1188 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
1188 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1628 EXCEL.EXE
1628 EXCEL.EXE
1628 EXCEL.EXE

pid	process
1188	Explorer.EXE
1188	Explorer.EXE

pid	process
1188	Explorer.EXE
1188	Explorer.EXE

pid	process
1628	EXCEL.EXE
1628	EXCEL.EXE
1628	EXCEL.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EQNEDT32.EXEvbc.exejcygjcnq.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1684 wrote to memory of 508	1684	EQNEDT32.EXE	vbc.exe
PID 1684 wrote to memory of 508	1684	EQNEDT32.EXE	vbc.exe
PID 1684 wrote to memory of 508	1684	EQNEDT32.EXE	vbc.exe
PID 1684 wrote to memory of 508	1684	EQNEDT32.EXE	vbc.exe
PID 508 wrote to memory of 968	508	vbc.exe	jcygjcnq.exe
PID 508 wrote to memory of 968	508	vbc.exe	jcygjcnq.exe
PID 508 wrote to memory of 968	508	vbc.exe	jcygjcnq.exe
PID 508 wrote to memory of 968	508	vbc.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 968 wrote to memory of 1756	968	jcygjcnq.exe	jcygjcnq.exe
PID 1188 wrote to memory of 1772	1188	Explorer.EXE	mstsc.exe
PID 1188 wrote to memory of 1772	1188	Explorer.EXE	mstsc.exe
PID 1188 wrote to memory of 1772	1188	Explorer.EXE	mstsc.exe
PID 1188 wrote to memory of 1772	1188	Explorer.EXE	mstsc.exe
PID 1772 wrote to memory of 1932	1772	mstsc.exe	cmd.exe
PID 1772 wrote to memory of 1932	1772	mstsc.exe	cmd.exe
PID 1772 wrote to memory of 1932	1772	mstsc.exe	cmd.exe
PID 1772 wrote to memory of 1932	1772	mstsc.exe	cmd.exe
PID 1772 wrote to memory of 1680	1772	mstsc.exe	Firefox.exe
PID 1772 wrote to memory of 1680	1772	mstsc.exe	Firefox.exe
PID 1772 wrote to memory of 1680	1772	mstsc.exe	Firefox.exe
PID 1772 wrote to memory of 1680	1772	mstsc.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1188

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\decrypted.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1628

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe"
3⤵
PID:1932

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1680

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:1684

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:508

C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe C:\Users\Admin\AppData\Local\Temp\qstzsxjbbv
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:968

C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe C:\Users\Admin\AppData\Local\Temp\qstzsxjbbv
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1756

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
Filesize
78KB

MD5
98ee6c5e1d885357154526d643b4126d

SHA1
fe5f549d66395bca847aab1fae7588188cd56f33

SHA256
05cf82c84a2879edc66f9fad43eb960ba84330ecc31f15e09ef0e08f86d57d90

SHA512
3a7145dc85a426acbdb12cf340100de25059b2016609449961f23e5585bede18b4ab2d28f10656db0580e57651beda271d509c439d54907e35c3b3aab2101200

Download Submit
C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
Filesize
78KB

MD5
98ee6c5e1d885357154526d643b4126d

SHA1
fe5f549d66395bca847aab1fae7588188cd56f33

SHA256
05cf82c84a2879edc66f9fad43eb960ba84330ecc31f15e09ef0e08f86d57d90

SHA512
3a7145dc85a426acbdb12cf340100de25059b2016609449961f23e5585bede18b4ab2d28f10656db0580e57651beda271d509c439d54907e35c3b3aab2101200

Download Submit
C:\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
Filesize
78KB

MD5
98ee6c5e1d885357154526d643b4126d

SHA1
fe5f549d66395bca847aab1fae7588188cd56f33

SHA256
05cf82c84a2879edc66f9fad43eb960ba84330ecc31f15e09ef0e08f86d57d90

SHA512
3a7145dc85a426acbdb12cf340100de25059b2016609449961f23e5585bede18b4ab2d28f10656db0580e57651beda271d509c439d54907e35c3b3aab2101200

Download Submit
C:\Users\Admin\AppData\Local\Temp\qstzsxjbbv
Filesize
5KB

MD5
81d4a4f84f4a44459833e2fa6e08458a

SHA1
61d47b45384e992edd0423242c8d1ec68aaff87c

SHA256
772bb6e41de10b3520e6675da37648bf9cde3c83e48c42ae30882e13a8d985b9

SHA512
a18514784af2be67b8b9b3d9bc676687b542c49543438836e76aea6736c3cfed1d72ad45ca55c492273459e0953ade833b5ee551b298af26dfebe6548ae2950e

Download Submit
C:\Users\Admin\AppData\Local\Temp\rlpvwtcgjf9e517nzq2z
Filesize
171KB

MD5
193aecc71e1ef6f8db44cc6305d6c5bc

SHA1
311822f5303013ef51289572f1faf8d3699cbfaa

SHA256
9fde97c4f96298defd74e263c9b32cecf2b62289ec4187c2a01643286da5c061

SHA512
fdeff8db099a6b4dad4e13739c35efe03e6bd87c6541c557783d0479ce4cb24168c07e1dc9dab3efabe658165ef9b081ea6af997d7a1500900659a018b9835d8

Download Submit
C:\Users\Public\vbc.exe
Filesize
257KB

MD5
e437b563de87f3d825a87269e16fdd50

SHA1
e6fe350f21bd3f3302e12e0d6670880c9ace9f9e

SHA256
8f3780c613f03acb6ee57b161685fe6adfa77fe0f9571992f315b1477148c56e

SHA512
9c2af78712edb27c36bf1ba3004e24ad63473c897217c7b8346118af279431d8e9301c7c0b9f9151a8157f05ba790d3e480f36308b09c42864bb2cac6f29dd12

Download Submit
C:\Users\Public\vbc.exe
Filesize
257KB

MD5
e437b563de87f3d825a87269e16fdd50

SHA1
e6fe350f21bd3f3302e12e0d6670880c9ace9f9e

SHA256
8f3780c613f03acb6ee57b161685fe6adfa77fe0f9571992f315b1477148c56e

SHA512
9c2af78712edb27c36bf1ba3004e24ad63473c897217c7b8346118af279431d8e9301c7c0b9f9151a8157f05ba790d3e480f36308b09c42864bb2cac6f29dd12

Download Submit
\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
Filesize
78KB

MD5
98ee6c5e1d885357154526d643b4126d

SHA1
fe5f549d66395bca847aab1fae7588188cd56f33

SHA256
05cf82c84a2879edc66f9fad43eb960ba84330ecc31f15e09ef0e08f86d57d90

SHA512
3a7145dc85a426acbdb12cf340100de25059b2016609449961f23e5585bede18b4ab2d28f10656db0580e57651beda271d509c439d54907e35c3b3aab2101200

Download Submit
\Users\Admin\AppData\Local\Temp\jcygjcnq.exe
Filesize
78KB

MD5
98ee6c5e1d885357154526d643b4126d

SHA1
fe5f549d66395bca847aab1fae7588188cd56f33

SHA256
05cf82c84a2879edc66f9fad43eb960ba84330ecc31f15e09ef0e08f86d57d90

SHA512
3a7145dc85a426acbdb12cf340100de25059b2016609449961f23e5585bede18b4ab2d28f10656db0580e57651beda271d509c439d54907e35c3b3aab2101200

Download Submit
\Users\Public\vbc.exe
Filesize
257KB

MD5
e437b563de87f3d825a87269e16fdd50

SHA1
e6fe350f21bd3f3302e12e0d6670880c9ace9f9e

SHA256
8f3780c613f03acb6ee57b161685fe6adfa77fe0f9571992f315b1477148c56e

SHA512
9c2af78712edb27c36bf1ba3004e24ad63473c897217c7b8346118af279431d8e9301c7c0b9f9151a8157f05ba790d3e480f36308b09c42864bb2cac6f29dd12

Download Submit
\Users\Public\vbc.exe
Filesize
257KB

MD5
e437b563de87f3d825a87269e16fdd50

SHA1
e6fe350f21bd3f3302e12e0d6670880c9ace9f9e

SHA256
8f3780c613f03acb6ee57b161685fe6adfa77fe0f9571992f315b1477148c56e

SHA512
9c2af78712edb27c36bf1ba3004e24ad63473c897217c7b8346118af279431d8e9301c7c0b9f9151a8157f05ba790d3e480f36308b09c42864bb2cac6f29dd12

Download Submit
\Users\Public\vbc.exe
Filesize
257KB

MD5
e437b563de87f3d825a87269e16fdd50

SHA1
e6fe350f21bd3f3302e12e0d6670880c9ace9f9e

SHA256
8f3780c613f03acb6ee57b161685fe6adfa77fe0f9571992f315b1477148c56e

SHA512
9c2af78712edb27c36bf1ba3004e24ad63473c897217c7b8346118af279431d8e9301c7c0b9f9151a8157f05ba790d3e480f36308b09c42864bb2cac6f29dd12

Download Submit
memory/508-63-0x0000000000000000-mapping.dmp

Download
memory/968-68-0x0000000000000000-mapping.dmp

Download
memory/1188-90-0x0000000006960000-0x0000000006A52000-memory.dmp

Filesize
968KB

Download
memory/1188-82-0x0000000007640000-0x00000000077C5000-memory.dmp

Filesize
1.5MB

Download
memory/1628-54-0x000000002F211000-0x000000002F214000-memory.dmp

Filesize
12KB

Download
memory/1628-58-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1628-57-0x000000007219D000-0x00000000721A8000-memory.dmp

Filesize
44KB

Download
memory/1628-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1628-91-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1628-55-0x00000000711B1000-0x00000000711B3000-memory.dmp

Filesize
8KB

Download
memory/1756-81-0x00000000001B0000-0x00000000001C1000-memory.dmp

Filesize
68KB

Download
memory/1756-80-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/1756-79-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1756-76-0x000000000041F270-mapping.dmp

Download
memory/1756-75-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1772-83-0x0000000000000000-mapping.dmp

Download
memory/1772-86-0x0000000000140000-0x0000000000244000-memory.dmp

Filesize
1.0MB

Download
memory/1772-87-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1772-88-0x0000000002090000-0x0000000002393000-memory.dmp

Filesize
3.0MB

Download
memory/1772-89-0x0000000001F00000-0x0000000001F90000-memory.dmp

Filesize
576KB

Download
memory/1932-85-0x0000000000000000-mapping.dmp

Download