formbook | 6d544e1b25b2081b2c9f895d5045085820ba2087bed05f20c2c59cfbc44bea02

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
03-03-2023 09:29

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General

Target

SW_030323.xlsx
Size

861KB
MD5

e43e70829f350e566468a8d7b158ecca
SHA1

57a4e905a83e715a69e107dcc63f5bf8a606f9eb
SHA256

6d544e1b25b2081b2c9f895d5045085820ba2087bed05f20c2c59cfbc44bea02
SHA512

e765eaaf83eb79afa29158f98dd636c39d789f31cd8648754adf32d18a9dd31a4a1eedd68227e84480a8309f5008047f251ccab5a275e8ffab652ba7faa8f443
SSDEEP

24576:qhBFwctvyY1KgmwJR4AHCtsDrqdVHpYx/LFOmOaWSGx9:qhBFF0Y0HwMttYGrexXWS2

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/1772-77-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1772-82-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1488-88-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/1488-90-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\AX0HUDZ8OBCL = "C:\\Program Files (x86)\\Izv1h8\\vga1bgx.exe"	cmmon32.exe

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 432 EQNEDT32.EXE
Downloads MZ/PE file

flow	pid	process
3	432	EQNEDT32.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:

wezfenkpk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Control Panel\International\Geo\Nation	wezfenkpk.exe

Executes dropped EXE 3 IoCs

Processes:

name.exewezfenkpk.exewezfenkpk.exe

pid process

284 name.exe
288 wezfenkpk.exe
1772 wezfenkpk.exe
Loads dropped DLL 4 IoCs

Processes:

cmd.exename.exewezfenkpk.exe

pid process

1524 cmd.exe
284 name.exe
284 name.exe
288 wezfenkpk.exe

pid	process
284	name.exe
288	wezfenkpk.exe
1772	wezfenkpk.exe

pid	process
1524	cmd.exe
284	name.exe
284	name.exe
288	wezfenkpk.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

wezfenkpk.exewezfenkpk.execmmon32.exe

description	pid	process	target process
PID 288 set thread context of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 1772 set thread context of 1204	1772	wezfenkpk.exe	Explorer.EXE
PID 1488 set thread context of 1204	1488	cmmon32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmmon32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Izv1h8\vga1bgx.exe cmmon32.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

432 EQNEDT32.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Izv1h8\vga1bgx.exe	cmmon32.exe

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

pid	process
432	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXEcmmon32.exe

description	ioc	process
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 HTML Editor	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\shell\edit	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\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	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
Set value (int)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	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-1-5-21-3499517378-2376672570-1134980332-1000\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	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	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-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	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 MHTML Editor	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key created	\Registry\User\S-1-5-21-3499517378-2376672570-1134980332-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe
Key created	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	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\.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\.htm\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe	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	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14\ = "C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\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\ = "&Open"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	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\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\ = "&Edit"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	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\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\DefaultIcon\ = "\"%1\""	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\Microsoft Excel\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile	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\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	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\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\topic	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe	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\Excel.exe\shell\edit\command	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\Microsoft Publisher\shell\edit\command	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1736 EXCEL.EXE

pid	process
1736	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

wezfenkpk.execmmon32.exe

pid	process
1772	wezfenkpk.exe
1772	wezfenkpk.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

wezfenkpk.exewezfenkpk.execmmon32.exe

pid process

288 wezfenkpk.exe
1772 wezfenkpk.exe
1772 wezfenkpk.exe
1772 wezfenkpk.exe
1488 cmmon32.exe
1488 cmmon32.exe
1488 cmmon32.exe
1488 cmmon32.exe

pid	process
1204	Explorer.EXE

pid	process
288	wezfenkpk.exe
1772	wezfenkpk.exe
1772	wezfenkpk.exe
1772	wezfenkpk.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe
1488	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

wezfenkpk.exeExplorer.EXEcmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1772	wezfenkpk.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeDebugPrivilege	1488	cmmon32.exe
Token: SeShutdownPrivilege	1204	Explorer.EXE
Token: SeShutdownPrivilege	1204	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

EXCEL.EXEExplorer.EXE

pid process

1736 EXCEL.EXE
1736 EXCEL.EXE
1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1736 EXCEL.EXE
1736 EXCEL.EXE
1736 EXCEL.EXE

pid	process
1736	EXCEL.EXE
1736	EXCEL.EXE
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1736	EXCEL.EXE
1736	EXCEL.EXE
1736	EXCEL.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

EQNEDT32.EXEcmd.exename.exewezfenkpk.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 432 wrote to memory of 1524	432	EQNEDT32.EXE	cmd.exe
PID 432 wrote to memory of 1524	432	EQNEDT32.EXE	cmd.exe
PID 432 wrote to memory of 1524	432	EQNEDT32.EXE	cmd.exe
PID 432 wrote to memory of 1524	432	EQNEDT32.EXE	cmd.exe
PID 1524 wrote to memory of 284	1524	cmd.exe	name.exe
PID 1524 wrote to memory of 284	1524	cmd.exe	name.exe
PID 1524 wrote to memory of 284	1524	cmd.exe	name.exe
PID 1524 wrote to memory of 284	1524	cmd.exe	name.exe
PID 284 wrote to memory of 288	284	name.exe	wezfenkpk.exe
PID 284 wrote to memory of 288	284	name.exe	wezfenkpk.exe
PID 284 wrote to memory of 288	284	name.exe	wezfenkpk.exe
PID 284 wrote to memory of 288	284	name.exe	wezfenkpk.exe
PID 288 wrote to memory of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 288 wrote to memory of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 288 wrote to memory of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 288 wrote to memory of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 288 wrote to memory of 1772	288	wezfenkpk.exe	wezfenkpk.exe
PID 1204 wrote to memory of 1488	1204	Explorer.EXE	cmmon32.exe
PID 1204 wrote to memory of 1488	1204	Explorer.EXE	cmmon32.exe
PID 1204 wrote to memory of 1488	1204	Explorer.EXE	cmmon32.exe
PID 1204 wrote to memory of 1488	1204	Explorer.EXE	cmmon32.exe
PID 1488 wrote to memory of 1288	1488	cmmon32.exe	cmd.exe
PID 1488 wrote to memory of 1288	1488	cmmon32.exe	cmd.exe
PID 1488 wrote to memory of 1288	1488	cmmon32.exe	cmd.exe
PID 1488 wrote to memory of 1288	1488	cmmon32.exe	cmd.exe
PID 1488 wrote to memory of 384	1488	cmmon32.exe	Firefox.exe
PID 1488 wrote to memory of 384	1488	cmmon32.exe	Firefox.exe
PID 1488 wrote to memory of 384	1488	cmmon32.exe	Firefox.exe
PID 1488 wrote to memory of 384	1488	cmmon32.exe	Firefox.exe
PID 1488 wrote to memory of 384	1488	cmmon32.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:1204

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\SW_030323.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:1736

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Adds policy 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:1488

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"
3⤵
PID:1288

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:384

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:432

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:1524

C:\Users\Public\name.exe
C:\Users\Public\name.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:284

C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
"C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe" C:\Users\Admin\AppData\Local\Temp\vsuua.et
4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:288

C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
"C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe"
5⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1772

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\fzswddmia.aj
Filesize
196KB

MD5
2c9ba6c19ec21081b759d3e0f889dda1

SHA1
3809a0f38138c973d14b346ab4d62496fc895d82

SHA256
3c8c84a00d3e569587c0c3918def00f8869e6e9b3327eec42c8ffdec733cc8b5

SHA512
b369cfe1625dc1057fe98d5bf9d2153aac2545ef47fc5d128f9c9f96d7531fa26ed49670d334d12bb8b9dc7d43ae66e3e82653286742e1e299ae6b24452e70bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\vsuua.et
Filesize
5KB

MD5
fab2e47f3265300d0c9224bc2ac3f883

SHA1
d714768273e25c70e4b24189b160c39fe95ac9c4

SHA256
2a6fe5103416cdcb2fbd6c15ac572a01cc70f02946c300a7737fcb0e4cfdaeaa

SHA512
9f6452f21e5870943037709a655e62a0e2708c7276ea0e24fd217fa119fc846f2f4b4104d49db3f055f972c1331f5e9f5cd9872fb0e3476a3edad2ab231edd63

Download Submit
C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
C:\Users\Public\name.exe
Filesize
233KB

MD5
a41acdf19b7e87d38d877be588d5f56c

SHA1
ee6284581f51d55a4b0751934c49cbddb21a398d

SHA256
dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc

SHA512
2125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a

Download Submit
C:\Users\Public\name.exe
Filesize
233KB

MD5
a41acdf19b7e87d38d877be588d5f56c

SHA1
ee6284581f51d55a4b0751934c49cbddb21a398d

SHA256
dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc

SHA512
2125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a

Download Submit
\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
\Users\Admin\AppData\Local\Temp\wezfenkpk.exe
Filesize
19KB

MD5
3de9c51a02680d20b72024c1700330cb

SHA1
b4b48d9e01b7bab67207c1f6b27c5644fde0de40

SHA256
a1a10e9fbdd72ce8bd1d6eb21603e14014d62908b7dc2e3dfc15007b701ce0e7

SHA512
c72c6873b5636adabbe4b39b9c399ae817af3ba361d0c4cae6fb66d2d347709f89a9b11cb47a425d77a2ab089528b1ad9fd93e558649cac27512544619fa7cb9

Download Submit
\Users\Public\name.exe
Filesize
233KB

MD5
a41acdf19b7e87d38d877be588d5f56c

SHA1
ee6284581f51d55a4b0751934c49cbddb21a398d

SHA256
dd75a28d38eb63acf3566cca03f9ab928f16633d9d69e7b3ee1671a382a38dcc

SHA512
2125448102b3296847f2effd9fbf47588d31b47b1875f733826c9fabf14c54f9a92e820df08e524628d162f7d5f12f1243705322964c41ef839d0ef6400f6a1a

Download Submit
memory/1204-81-0x00000000000E0000-0x00000000001E0000-memory.dmp

Filesize
1024KB

Download
memory/1204-85-0x0000000006090000-0x000000000622C000-memory.dmp

Filesize
1.6MB

Download
memory/1204-98-0x0000000007330000-0x000000000743B000-memory.dmp

Filesize
1.0MB

Download
memory/1204-96-0x0000000007330000-0x000000000743B000-memory.dmp

Filesize
1.0MB

Download
memory/1204-95-0x0000000007330000-0x000000000743B000-memory.dmp

Filesize
1.0MB

Download
memory/1488-88-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1488-86-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/1488-87-0x00000000001B0000-0x00000000001BD000-memory.dmp

Filesize
52KB

Download
memory/1488-89-0x0000000002030000-0x0000000002333000-memory.dmp

Filesize
3.0MB

Download
memory/1488-90-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1488-93-0x0000000001D60000-0x0000000001DF0000-memory.dmp

Filesize
576KB

Download
memory/1736-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1736-105-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1772-84-0x00000000001B0000-0x00000000001C1000-memory.dmp

Filesize
68KB

Download
memory/1772-77-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1772-83-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/1772-82-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download