formbook | 084b97b355d56cc5218df3154cb1a30469b9c491f7e2c25afe2cd3dc138fba22

Analysis

max time kernel
149s
max time network
143s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
30-01-2023 09:56

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General

Target

Doc_230130.xlsx
Size

702KB
MD5

d580807d4ec90e4abef17b0b89bc6ca3
SHA1

5051e0df1c94942a5c911f15d4d4b9d3b7252939
SHA256

3d120d5932768adbbae1ebe3a10396f58808d5f586b72f5a22b623214ea1830d
SHA512

98535ead563d472a600f5aebffb3b74491cfd8b22d4e8b4ab5b2aa4f9cf71b460d54443b03c1f14e2452e44069ed9d2f63723091e24d2ed14f788800bd093d15
SSDEEP

12288:wmpPU4JAXM6skUcuV6573iOux7bd9lkMszTpCrnQ4X8WGgIwS8+/zSnyDI:jfKikUcTxi5d9cpkQ4JL7q730

Score

10^/10

formbook xloader poub loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

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

Xloader payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1372-78-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1372-86-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1272-89-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/1272-93-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1692 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 3 IoCs

Processes:

name.exegpfxtha.exegpfxtha.exe

pid process

360 name.exe
1000 gpfxtha.exe
1372 gpfxtha.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

gpfxtha.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Control Panel\International\Geo\Nation gpfxtha.exe
Loads dropped DLL 3 IoCs

Processes:

cmd.exename.exegpfxtha.exe

pid process

676 cmd.exe
360 name.exe
1000 gpfxtha.exe

flow	pid	process
3	1692	EQNEDT32.EXE

pid	process
360	name.exe
1000	gpfxtha.exe
1372	gpfxtha.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Control Panel\International\Geo\Nation	gpfxtha.exe

pid	process
676	cmd.exe
360	name.exe
1000	gpfxtha.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wlanext.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	wlanext.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\BX4DUX18FPGL = "C:\\Program Files (x86)\\Lyzmpyxt8\\igfxz6axv4a8.exe"	wlanext.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

gpfxtha.exegpfxtha.exewlanext.exe

description	pid	process	target process
PID 1000 set thread context of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1372 set thread context of 1236	1372	gpfxtha.exe	Explorer.EXE
PID 1372 set thread context of 1236	1372	gpfxtha.exe	Explorer.EXE
PID 1272 set thread context of 1236	1272	wlanext.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

wlanext.exe

description ioc process

File opened for modification C:\Program Files (x86)\Lyzmpyxt8\igfxz6axv4a8.exe wlanext.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

1692 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Lyzmpyxt8\igfxz6axv4a8.exe	wlanext.exe

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

pid	process
1692	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXEwlanext.exe

description	ioc	process
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
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\edit	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\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 deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\MenuExt	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\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
Key created	\Registry\User\S-1-5-21-1214520366-621468234-4062160515-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wlanext.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	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
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 (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	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\shell	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	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\shell\edit	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command	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 (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\WinWord.exe\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\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 (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList	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\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\ = "&Edit"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	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\Excel.exe\shell\edit\ddeexec\application	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\ = "&Open"	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	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon\mhtmlfile	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	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\ = "&Print"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit	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\htmlfile\shell\Edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.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
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	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\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	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\.htm	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\""	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\ddeexec\topic	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\shellex\IconHandler	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	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\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1704 EXCEL.EXE

pid	process
1704	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

gpfxtha.exewlanext.exe

pid	process
1372	gpfxtha.exe
1372	gpfxtha.exe
1372	gpfxtha.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1236 Explorer.EXE
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

gpfxtha.exegpfxtha.exewlanext.exe

pid process

1000 gpfxtha.exe
1372 gpfxtha.exe
1372 gpfxtha.exe
1372 gpfxtha.exe
1372 gpfxtha.exe
1272 wlanext.exe
1272 wlanext.exe
1272 wlanext.exe
1272 wlanext.exe

pid	process
1236	Explorer.EXE

pid	process
1000	gpfxtha.exe
1372	gpfxtha.exe
1372	gpfxtha.exe
1372	gpfxtha.exe
1372	gpfxtha.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe
1272	wlanext.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

gpfxtha.exeExplorer.EXEwlanext.exe

description	pid	process
Token: SeDebugPrivilege	1372	gpfxtha.exe
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeDebugPrivilege	1272	wlanext.exe
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeShutdownPrivilege	1236	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1704 EXCEL.EXE
1704 EXCEL.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1704 EXCEL.EXE
1704 EXCEL.EXE
1704 EXCEL.EXE

pid	process
1704	EXCEL.EXE
1704	EXCEL.EXE

pid	process
1704	EXCEL.EXE
1704	EXCEL.EXE
1704	EXCEL.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

EQNEDT32.EXEcmd.exename.exegpfxtha.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1692 wrote to memory of 676	1692	EQNEDT32.EXE	cmd.exe
PID 1692 wrote to memory of 676	1692	EQNEDT32.EXE	cmd.exe
PID 1692 wrote to memory of 676	1692	EQNEDT32.EXE	cmd.exe
PID 1692 wrote to memory of 676	1692	EQNEDT32.EXE	cmd.exe
PID 676 wrote to memory of 360	676	cmd.exe	name.exe
PID 676 wrote to memory of 360	676	cmd.exe	name.exe
PID 676 wrote to memory of 360	676	cmd.exe	name.exe
PID 676 wrote to memory of 360	676	cmd.exe	name.exe
PID 360 wrote to memory of 1000	360	name.exe	gpfxtha.exe
PID 360 wrote to memory of 1000	360	name.exe	gpfxtha.exe
PID 360 wrote to memory of 1000	360	name.exe	gpfxtha.exe
PID 360 wrote to memory of 1000	360	name.exe	gpfxtha.exe
PID 1000 wrote to memory of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1000 wrote to memory of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1000 wrote to memory of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1000 wrote to memory of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1000 wrote to memory of 1372	1000	gpfxtha.exe	gpfxtha.exe
PID 1236 wrote to memory of 1272	1236	Explorer.EXE	wlanext.exe
PID 1236 wrote to memory of 1272	1236	Explorer.EXE	wlanext.exe
PID 1236 wrote to memory of 1272	1236	Explorer.EXE	wlanext.exe
PID 1236 wrote to memory of 1272	1236	Explorer.EXE	wlanext.exe
PID 1272 wrote to memory of 1228	1272	wlanext.exe	cmd.exe
PID 1272 wrote to memory of 1228	1272	wlanext.exe	cmd.exe
PID 1272 wrote to memory of 1228	1272	wlanext.exe	cmd.exe
PID 1272 wrote to memory of 1228	1272	wlanext.exe	cmd.exe
PID 1272 wrote to memory of 1000	1272	wlanext.exe	Firefox.exe
PID 1272 wrote to memory of 1000	1272	wlanext.exe	Firefox.exe
PID 1272 wrote to memory of 1000	1272	wlanext.exe	Firefox.exe
PID 1272 wrote to memory of 1000	1272	wlanext.exe	Firefox.exe
PID 1272 wrote to memory of 1000	1272	wlanext.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1236

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\Doc_230130.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:1704

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.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:1272

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe"
3⤵
PID:1228

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1000

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
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Public\name.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:676

C:\Users\Public\name.exe
C:\Users\Public\name.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:360

C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
"C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe" C:\Users\Admin\AppData\Local\Temp\aoigfqupgnb.bmp
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1000

C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
"C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe"
5⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1372

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\aoigfqupgnb.bmp
Filesize
5KB

MD5
1eab44ab55b31a226a733b3b2098964d

SHA1
4cd920b4e150cae7d07f8b9868d49cc2da095345

SHA256
5b5fe85e87fd724e900aca5e51d35e0c855de2400be39f86763634b32737611a

SHA512
c4866e02a9d6d2d1342d09871093cb18e765e9bb0b9b1e93e43e8e69be1c9bcb1fe2b9376cbe222a38e8c94cce87b279481106e7781007b0d9732bf224609d79

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\vjoul.h
Filesize
196KB

MD5
3e47a8bda5357626cd12360d155bf606

SHA1
2fca349609e4d116e4cc493811b80670d9fc6b47

SHA256
649820e7856bc462f79cf32ac90213384b498a6e0efc2dbd66d8837509352b59

SHA512
51593e2c98b44ff6784244e82f8c4b906c61e6606d785311e88cfcaa1e6bf6b4fa2bdff84a8e8f0296a0963f7329ea54c8866e508e1253754428f10adb4bc029

Download Submit
C:\Users\Public\name.exe
Filesize
280KB

MD5
8e4837c1af544798e66033ff94178202

SHA1
ba11a4cd9fee1517dec84041fd85fb0d9dcc0270

SHA256
2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d

SHA512
d56204d7765b0bedd4451cb4832967cd15609831c44b05ee7f96703db27261948cdb1cab3270328ae8fd466909541680b0e9f166ae170c55b6a9ee8b767298f4

Download Submit
C:\Users\Public\name.exe
Filesize
280KB

MD5
8e4837c1af544798e66033ff94178202

SHA1
ba11a4cd9fee1517dec84041fd85fb0d9dcc0270

SHA256
2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d

SHA512
d56204d7765b0bedd4451cb4832967cd15609831c44b05ee7f96703db27261948cdb1cab3270328ae8fd466909541680b0e9f166ae170c55b6a9ee8b767298f4

Download Submit
\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
\Users\Admin\AppData\Local\Temp\gpfxtha.exe
Filesize
112KB

MD5
58a53663c36b38e16632b01b6e04171f

SHA1
b93818768f84a83aa9718300bf7f243990be96b7

SHA256
d2521702919bed257020d11081d927dea7d264ce3fa2c1d402ef63092b4137b4

SHA512
2a59bb5ec7bb35bd8785da0c2bf938e3e41d075fde32659125c817f0e49a2618f306c374775f9eabdc31b1490ef0296bac3fcc3ff3229a5b608b2ad41e6c13ab

Download Submit
\Users\Public\name.exe
Filesize
280KB

MD5
8e4837c1af544798e66033ff94178202

SHA1
ba11a4cd9fee1517dec84041fd85fb0d9dcc0270

SHA256
2d8e544f10af06bd50beb47f3b24b837e876bcf2464bf5048a578c4111a23d1d

SHA512
d56204d7765b0bedd4451cb4832967cd15609831c44b05ee7f96703db27261948cdb1cab3270328ae8fd466909541680b0e9f166ae170c55b6a9ee8b767298f4

Download Submit
memory/360-63-0x0000000000000000-mapping.dmp

Download
memory/676-60-0x0000000000000000-mapping.dmp

Download
memory/1000-67-0x0000000000000000-mapping.dmp

Download
memory/1228-87-0x0000000000000000-mapping.dmp

Download
memory/1236-81-0x0000000007290000-0x00000000073A6000-memory.dmp

Filesize
1.1MB

Download
memory/1236-99-0x000007FF2C9E0000-0x000007FF2C9EA000-memory.dmp

Filesize
40KB

Download
memory/1236-98-0x000007FEF6060000-0x000007FEF61A3000-memory.dmp

Filesize
1.3MB

Download
memory/1236-94-0x0000000009250000-0x00000000093A3000-memory.dmp

Filesize
1.3MB

Download
memory/1236-92-0x0000000009250000-0x00000000093A3000-memory.dmp

Filesize
1.3MB

Download
memory/1236-84-0x00000000066F0000-0x00000000067FE000-memory.dmp

Filesize
1.1MB

Download
memory/1272-85-0x0000000000000000-mapping.dmp

Download
memory/1272-93-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1272-91-0x0000000000540000-0x00000000005D0000-memory.dmp

Filesize
576KB

Download
memory/1272-89-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1272-90-0x00000000020F0000-0x00000000023F3000-memory.dmp

Filesize
3.0MB

Download
memory/1272-88-0x0000000000B40000-0x0000000000B56000-memory.dmp

Filesize
88KB

Download
memory/1372-80-0x00000000002C0000-0x00000000002D1000-memory.dmp

Filesize
68KB

Download
memory/1372-78-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1372-75-0x000000000041FF10-mapping.dmp

Download
memory/1372-86-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1372-83-0x0000000000310000-0x0000000000321000-memory.dmp

Filesize
68KB

Download
memory/1372-79-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/1704-54-0x000000002FFA1000-0x000000002FFA4000-memory.dmp

Filesize
12KB

Download
memory/1704-77-0x000000006C521000-0x000000006C523000-memory.dmp

Filesize
8KB

Download
memory/1704-82-0x0000000071F1D000-0x0000000071F28000-memory.dmp

Filesize
44KB

Download
memory/1704-70-0x000000006C141000-0x000000006C143000-memory.dmp

Filesize
8KB

Download
memory/1704-55-0x0000000070F31000-0x0000000070F33000-memory.dmp

Filesize
8KB

Download
memory/1704-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1704-96-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1704-97-0x0000000071F1D000-0x0000000071F28000-memory.dmp

Filesize
44KB

Download
memory/1704-57-0x0000000071F1D000-0x0000000071F28000-memory.dmp

Filesize
44KB

Download
memory/1704-58-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download