remcos | f7f7eef1335e813a234c7bfa0122c9865ef55f8655082fa9cf4e295fb4b58981

Analysis

max time kernel
157s
max time network
189s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 10:53

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General

Target

INVOICE.xlsx
Size

635KB
MD5

50d4c5006d1abef317feb283d0baf2ac
SHA1

0afc1dc445d3896f75e29b62a4fdba8e06a5fe3c
SHA256

f7f7eef1335e813a234c7bfa0122c9865ef55f8655082fa9cf4e295fb4b58981
SHA512

5c1247d7d981a583c72e1817693871b8520237976baebe661d39fd689fbb9aa7ad0250059eda9d8f99ed2214704c6a731dfe45a4c0b13f51d55f85307d0cd52b
SSDEEP

12288:EjcUe04sRll50nRkC+MOh6iM8rNcillJ20BEyKsJ2vqlNVpsKqwlDDOBYM09cH:EAUvZCRkBMj827Y22VxqwllQH

Score

10^/10

remcos eric-host persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Eric-Host

craigjonson91211.freedynamicdns.net:2011

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
wee.exe
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Rmc-TJGIFV
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
qos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

1 1136 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

ASD.exeASD.exewee.exewee.exe

pid process

516 ASD.exe
320 ASD.exe
1148 wee.exe
1352 wee.exe
Loads dropped DLL 2 IoCs

Processes:

EQNEDT32.EXEcmd.exe

pid process

1136 EQNEDT32.EXE
1756 cmd.exe

flow	pid	process
1	1136	EQNEDT32.EXE

pid	process
516	ASD.exe
320	ASD.exe
1148	wee.exe
1352	wee.exe

pid	process
1136	EQNEDT32.EXE
1756	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wee.exeASD.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	wee.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\qos = "\"C:\\Users\\Admin\\AppData\\Roaming\\wee.exe\""	wee.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	wee.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\qos = "\"C:\\Users\\Admin\\AppData\\Roaming\\wee.exe\""	wee.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	ASD.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\qos = "\"C:\\Users\\Admin\\AppData\\Roaming\\wee.exe\""	ASD.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	ASD.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\qos = "\"C:\\Users\\Admin\\AppData\\Roaming\\wee.exe\""	ASD.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

ASD.exewee.exe

description pid process target process

PID 516 set thread context of 320 516 ASD.exe ASD.exe
PID 1148 set thread context of 1352 1148 wee.exe wee.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

1136 EQNEDT32.EXE

description	pid	process	target process
PID 516 set thread context of 320	516	ASD.exe	ASD.exe
PID 1148 set thread context of 1352	1148	wee.exe	wee.exe

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

pid	process
1136	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Key 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 HTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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 HTML Editor	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML 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-1-5-21-3845472200-3839195424-595303356-1000\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	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 MHTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	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\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
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command	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 (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel	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\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\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\Microsoft Word\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\ = "&Print"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\topic	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
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
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version	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\.mht\OpenWithList\Microsoft Word	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\Excel.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\EXCEL.EXE\" /dde"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\MSPub.exe\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList	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\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec\application	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	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\mhtmlfile\ShellEx	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\Microsoft Excel\shell\edit	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	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\MSPub.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\MSPUB.EXE\" %1"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\ddeexec	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\ = "&Print"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1164 EXCEL.EXE
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

EXCEL.EXEwee.exe

pid process

1164 EXCEL.EXE
1164 EXCEL.EXE
1164 EXCEL.EXE
1352 wee.exe

pid	process
1164	EXCEL.EXE

pid	process
1164	EXCEL.EXE
1164	EXCEL.EXE
1164	EXCEL.EXE
1352	wee.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

EQNEDT32.EXEASD.exeASD.exeWScript.execmd.exewee.exe

description	pid	process	target process
PID 1136 wrote to memory of 516	1136	EQNEDT32.EXE	ASD.exe
PID 1136 wrote to memory of 516	1136	EQNEDT32.EXE	ASD.exe
PID 1136 wrote to memory of 516	1136	EQNEDT32.EXE	ASD.exe
PID 1136 wrote to memory of 516	1136	EQNEDT32.EXE	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 516 wrote to memory of 320	516	ASD.exe	ASD.exe
PID 320 wrote to memory of 1612	320	ASD.exe	WScript.exe
PID 320 wrote to memory of 1612	320	ASD.exe	WScript.exe
PID 320 wrote to memory of 1612	320	ASD.exe	WScript.exe
PID 320 wrote to memory of 1612	320	ASD.exe	WScript.exe
PID 1612 wrote to memory of 1756	1612	WScript.exe	cmd.exe
PID 1612 wrote to memory of 1756	1612	WScript.exe	cmd.exe
PID 1612 wrote to memory of 1756	1612	WScript.exe	cmd.exe
PID 1612 wrote to memory of 1756	1612	WScript.exe	cmd.exe
PID 1756 wrote to memory of 1148	1756	cmd.exe	wee.exe
PID 1756 wrote to memory of 1148	1756	cmd.exe	wee.exe
PID 1756 wrote to memory of 1148	1756	cmd.exe	wee.exe
PID 1756 wrote to memory of 1148	1756	cmd.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe
PID 1148 wrote to memory of 1352	1148	wee.exe	wee.exe

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\INVOICE.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1164

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:1136

C:\Users\Admin\AppData\Roaming\ASD.exe
C:\Users\Admin\AppData\Roaming\ASD.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:516

C:\Users\Admin\AppData\Roaming\ASD.exe
"C:\Users\Admin\AppData\Roaming\ASD.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:320

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
4⤵
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\wee.exe"
5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1756

C:\Users\Admin\AppData\Roaming\wee.exe
C:\Users\Admin\AppData\Roaming\wee.exe
6⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1148

C:\Users\Admin\AppData\Roaming\wee.exe
"C:\Users\Admin\AppData\Roaming\wee.exe"
7⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1352

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs

Filesize
398B

MD5
f1536fc12b615b3b046757ce09cc2b41

SHA1
c67cacdb7dd2a1aa58ec9d2f554a831935fea0a2

SHA256
c03a7b60b1a4a6d06dbe6d1fc3444f68a64e1b9e48e1967b60003b0b02c78502

SHA512
39d0bfce41381099628b3d7f184c0aa49a98a9eef90da3b4be953530f3115bb4b72f871c6cf5026cce8d760b088865b63bbab3d8911d3e4513855712a3062207

Download Submit
C:\Users\Admin\AppData\Roaming\ASD.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
C:\Users\Admin\AppData\Roaming\ASD.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
C:\Users\Admin\AppData\Roaming\ASD.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
C:\Users\Admin\AppData\Roaming\wee.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
C:\Users\Admin\AppData\Roaming\wee.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
C:\Users\Admin\AppData\Roaming\wee.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
\Users\Admin\AppData\Roaming\ASD.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
\Users\Admin\AppData\Roaming\wee.exe

Filesize
1.2MB

MD5
9509104c2389315af9357e4ce52242a0

SHA1
d9b308391ba881f5c2ebb68561ae857c4e11d398

SHA256
58c07a9579110d38370f1050906a397ce8692681b20083f335d2f122bc570b80

SHA512
b3fb4b65397c5c2e14a1310a8d78daebc9b52b33498c9ce4eb4aad0bbf5630854501c8f82e0729dea94bd8f42f1405a92195849da03da6f80ece50ea53e4f38c

Download Submit
memory/320-88-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-90-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-83-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-84-0x00000000004327A4-mapping.dmp

Download
memory/320-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-74-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-72-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-76-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-77-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/320-78-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/516-66-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/516-61-0x0000000000000000-mapping.dmp

Download
memory/516-69-0x0000000005860000-0x0000000005946000-memory.dmp

Filesize
920KB

Download
memory/516-68-0x00000000002A0000-0x00000000002AC000-memory.dmp

Filesize
48KB

Download
memory/516-70-0x0000000005AB0000-0x0000000005B62000-memory.dmp

Filesize
712KB

Download
memory/516-64-0x0000000000990000-0x0000000000AC2000-memory.dmp

Filesize
1.2MB

Download
memory/1148-98-0x0000000000EB0000-0x0000000000FE2000-memory.dmp

Filesize
1.2MB

Download
memory/1148-96-0x0000000000000000-mapping.dmp

Download
memory/1164-101-0x0000000071F4D000-0x0000000071F58000-memory.dmp

Filesize
44KB

Download
memory/1164-67-0x0000000071F4D000-0x0000000071F58000-memory.dmp

Filesize
44KB

Download
memory/1164-58-0x0000000071F4D000-0x0000000071F58000-memory.dmp

Filesize
44KB

Download
memory/1164-57-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/1164-55-0x0000000070F61000-0x0000000070F63000-memory.dmp

Filesize
8KB

Download
memory/1164-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1164-54-0x000000002F151000-0x000000002F154000-memory.dmp

Filesize
12KB

Download
memory/1164-100-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1352-115-0x00000000004327A4-mapping.dmp

Download
memory/1352-119-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1352-120-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1352-121-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1612-89-0x0000000000000000-mapping.dmp

Download
memory/1756-93-0x0000000000000000-mapping.dmp

Download