remcos | 727b21d3161c37d2e70a9f367d72d41fac891153540bbebbe9cac7c13367b9b6

Analysis

max time kernel
146s
max time network
151s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
29-07-2022 16:09

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General

Target

d959b480824d3f572e43bfdc6662d177353443bac3210448c8b02c9a01a3bec0.pdf
Size

339KB
MD5

80a1c58f87a5546e12d09e5cbbac80e9
SHA1

4e92f9231b72fd64588e07428f84463941ae7355
SHA256

d959b480824d3f572e43bfdc6662d177353443bac3210448c8b02c9a01a3bec0
SHA512

b1bd2df11b6c83aee5aabd7cd2650f9f9bb0b5979501befa478aea8a16c18e6a52fc856c834b2173565c4cf190e644ad82e750f5ca2c94456e21dd9b23a54260

Score

10^/10

remcos xp persistence rat

Malware Config

Extracted

Family

remcos

Botnet

xpremcuz300622.ddns.net:3542

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
oos.exe
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Remcos-MMP2I7
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
kkl
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

6 1340 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 8 IoCs

Processes:

vbc.exevbc.exeoos.exeoos.exeoos.exeoos.exeoos.exeoos.exe

pid process

1860 vbc.exe
820 vbc.exe
952 oos.exe
1964 oos.exe
684 oos.exe
1516 oos.exe
1324 oos.exe
1804 oos.exe
Abuses OpenXML format to download file from external location
Loads dropped DLL 5 IoCs

Processes:

EQNEDT32.EXEcmd.exe

pid process

1340 EQNEDT32.EXE
1340 EQNEDT32.EXE
1340 EQNEDT32.EXE
1340 EQNEDT32.EXE
524 cmd.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1340	EQNEDT32.EXE

pid	process
1860	vbc.exe
820	vbc.exe
952	oos.exe
1964	oos.exe
684	oos.exe
1516	oos.exe
1324	oos.exe
1804	oos.exe

pid	process
1340	EQNEDT32.EXE
1340	EQNEDT32.EXE
1340	EQNEDT32.EXE
1340	EQNEDT32.EXE
524	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	vbc.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	vbc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1860 set thread context of 820 1860 vbc.exe vbc.exe
Drops file in Windows directory 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Office loads VBA resources, possible macro or embedded object present
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

1340 EQNEDT32.EXE

description	pid	process	target process
PID 1860 set thread context of 820	1860	vbc.exe	vbc.exe

description	ioc	process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

pid	process
1340	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	WINWORD.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\""	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.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\""	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE

Modifies registry class 64 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\ = "[open(\"%1\")]"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\DefaultIcon\ = "\"%1\""	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Version\14	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" %1"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application\ = "Excel"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\Old Icon	WINWORD.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"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\MSPub.exe\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Word\shell\edit\command	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\WinWord.exe\shell\edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Publisher\shell\edit\ = "&Open"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shellex\IconHandler\ = "{42042206-2D85-11D3-8CFF-005004838597}"	WINWORD.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\""	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Excel.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ = "&Open"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Publisher\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b005000750062005000720069006d006100720079003e00520024006e0075006a0053005700460065003f007d0061004c00720052007000390078004000570020002500310000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\ShellEx	WINWORD.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"	WINWORD.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"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shellex\IconHandler	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\WinWord.exe\shell\edit	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\htmlfile\shell\Print\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\msohtmed.exe\" /p %1"	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\application	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.htm\OpenWithList\Microsoft Excel\shell\edit\ddeexec\topic\ = "system"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\mhtmlfile\shell\Edit	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Word\shell\edit	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Microsoft Excel\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0045005800430045004c00460069006c00650073003e00560069006a00710042006f006600280059003800270077002100460049006400310067004c00510020002f0064006400650000000000	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mht\OpenWithList\Excel.exe\shell\edit\ddeexec\application\ = "Excel"	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{42042206-2D85-11D3-8CFF-005004838597}\InprocServer32\ThreadingModel = "Apartment"	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1924 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

oos.exe

pid process

952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
952 oos.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

1028 AcroRd32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

oos.exe

description pid process

Token: SeDebugPrivilege 952 oos.exe
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

AcroRd32.exeWINWORD.EXE

pid process

1028 AcroRd32.exe
1028 AcroRd32.exe
1028 AcroRd32.exe
1924 WINWORD.EXE
1924 WINWORD.EXE

pid	process
1924	WINWORD.EXE

pid	process
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe
952	oos.exe

pid	process
1028	AcroRd32.exe

description	pid	process
Token: SeDebugPrivilege	952	oos.exe

pid	process
1028	AcroRd32.exe
1028	AcroRd32.exe
1028	AcroRd32.exe
1924	WINWORD.EXE
1924	WINWORD.EXE

Suspicious use of WriteProcessMemory 57 IoCs

Processes:

AcroRd32.exeEQNEDT32.EXEWINWORD.EXEvbc.exevbc.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 1028 wrote to memory of 1924	1028	AcroRd32.exe	WINWORD.EXE
PID 1028 wrote to memory of 1924	1028	AcroRd32.exe	WINWORD.EXE
PID 1028 wrote to memory of 1924	1028	AcroRd32.exe	WINWORD.EXE
PID 1028 wrote to memory of 1924	1028	AcroRd32.exe	WINWORD.EXE
PID 1340 wrote to memory of 1860	1340	EQNEDT32.EXE	vbc.exe
PID 1340 wrote to memory of 1860	1340	EQNEDT32.EXE	vbc.exe
PID 1340 wrote to memory of 1860	1340	EQNEDT32.EXE	vbc.exe
PID 1340 wrote to memory of 1860	1340	EQNEDT32.EXE	vbc.exe
PID 1924 wrote to memory of 1348	1924	WINWORD.EXE	splwow64.exe
PID 1924 wrote to memory of 1348	1924	WINWORD.EXE	splwow64.exe
PID 1924 wrote to memory of 1348	1924	WINWORD.EXE	splwow64.exe
PID 1924 wrote to memory of 1348	1924	WINWORD.EXE	splwow64.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 1860 wrote to memory of 820	1860	vbc.exe	vbc.exe
PID 820 wrote to memory of 1816	820	vbc.exe	WScript.exe
PID 820 wrote to memory of 1816	820	vbc.exe	WScript.exe
PID 820 wrote to memory of 1816	820	vbc.exe	WScript.exe
PID 820 wrote to memory of 1816	820	vbc.exe	WScript.exe
PID 1816 wrote to memory of 524	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 524	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 524	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 524	1816	WScript.exe	cmd.exe
PID 524 wrote to memory of 952	524	cmd.exe	oos.exe
PID 524 wrote to memory of 952	524	cmd.exe	oos.exe
PID 524 wrote to memory of 952	524	cmd.exe	oos.exe
PID 524 wrote to memory of 952	524	cmd.exe	oos.exe
PID 952 wrote to memory of 1964	952	oos.exe	oos.exe
PID 952 wrote to memory of 1964	952	oos.exe	oos.exe
PID 952 wrote to memory of 1964	952	oos.exe	oos.exe
PID 952 wrote to memory of 1964	952	oos.exe	oos.exe
PID 952 wrote to memory of 684	952	oos.exe	oos.exe
PID 952 wrote to memory of 684	952	oos.exe	oos.exe
PID 952 wrote to memory of 684	952	oos.exe	oos.exe
PID 952 wrote to memory of 684	952	oos.exe	oos.exe
PID 952 wrote to memory of 1516	952	oos.exe	oos.exe
PID 952 wrote to memory of 1516	952	oos.exe	oos.exe
PID 952 wrote to memory of 1516	952	oos.exe	oos.exe
PID 952 wrote to memory of 1516	952	oos.exe	oos.exe
PID 952 wrote to memory of 1324	952	oos.exe	oos.exe
PID 952 wrote to memory of 1324	952	oos.exe	oos.exe
PID 952 wrote to memory of 1324	952	oos.exe	oos.exe
PID 952 wrote to memory of 1324	952	oos.exe	oos.exe
PID 952 wrote to memory of 1804	952	oos.exe	oos.exe
PID 952 wrote to memory of 1804	952	oos.exe	oos.exe
PID 952 wrote to memory of 1804	952	oos.exe	oos.exe
PID 952 wrote to memory of 1804	952	oos.exe	oos.exe

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\d959b480824d3f572e43bfdc6662d177353443bac3210448c8b02c9a01a3bec0.pdf"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1028

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\A9R60.tmp\has been verified. However PDF, JPEG, xlsx, .docx"
2⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1924

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
3⤵
PID:1348

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:1340

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1860

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:820

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
4⤵
- Suspicious use of WriteProcessMemory
PID:1816

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"
5⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:524

C:\Users\Admin\AppData\Roaming\oos.exe
C:\Users\Admin\AppData\Roaming\oos.exe
6⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:952

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
7⤵
- Executes dropped EXE
PID:1964

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
7⤵
- Executes dropped EXE
PID:684

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
7⤵
- Executes dropped EXE
PID:1516

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
7⤵
- Executes dropped EXE
PID:1324

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
7⤵
- Executes dropped EXE
PID:1804

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Exploitation for Client Execution

T1203

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\A9R60.tmp\has been verified. However PDF, JPEG, xlsx, .docx
Filesize
139KB

MD5
ec835425f9ac0a43ef2f5fffd56d2c95

SHA1
d36026e6716560212c761744ec301fb265c07634

SHA256
503a97b28718e3c1a2e58aa8ad3765ddc33c8d1f97648f253612dde76c585c25

SHA512
1198c203977253aa6f7d3f7123c2b94716689a0d8ff3a2f37ce77ce839b040f20ac31d25fd19705d4e61e8bef27235c9d6509363e8b72486295d634d281a8722

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
398B

MD5
a5d3440f90cbfae712166e20870eaed7

SHA1
cc1e1a2945eb2ad475234344f7527ad9e9873647

SHA256
960a570da95b8d16809cbcc18e8ca4d81e16cb666354ddc1d572daf93f291f02

SHA512
d3136a280fbb326ccc5cb5ab1214aed8ccd6baa7f3f89ef9e0b5bf391a957dab2c121640bb056e6cbda0594f83133c4dbb4e1e2f0e290b44a401cd2cf8cfd4aa

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
C:\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
\Users\Public\vbc.exe
Filesize
860KB

MD5
90b7fc34be5837101ff125bdbe99806a

SHA1
43a733cb58aaefffefec0720f1b93dae766a09e1

SHA256
703b4d505cd05c228e0cf681a542262dc98211cf2e4eb26102283b5b7efa29ee

SHA512
dd590eaad5b95ac4b703d5c36a367fc0517d33408b8f35218a341710411931bac51b97d3f12cbf26e1ba5deacaf8b3ae7390f108524f9a43b5bad3c8e2689658

Download Submit
memory/524-101-0x0000000000000000-mapping.dmp

Download
memory/820-88-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-96-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-98-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-78-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-79-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-81-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-83-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-85-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-84-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-86-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-95-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/820-91-0x000000000043168C-mapping.dmp

Download
memory/820-90-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/952-106-0x0000000000230000-0x000000000030C000-memory.dmp

Filesize
880KB

Download
memory/952-104-0x0000000000000000-mapping.dmp

Download
memory/1028-54-0x0000000076C01000-0x0000000076C03000-memory.dmp

Filesize
8KB

Download
memory/1348-75-0x000007FEFC451000-0x000007FEFC453000-memory.dmp

Filesize
8KB

Download
memory/1348-74-0x0000000000000000-mapping.dmp

Download
memory/1816-97-0x0000000000000000-mapping.dmp

Download
memory/1860-77-0x0000000005280000-0x00000000052FA000-memory.dmp

Filesize
488KB

Download
memory/1860-70-0x0000000000B60000-0x0000000000C3C000-memory.dmp

Filesize
880KB

Download
memory/1860-72-0x0000000000510000-0x0000000000528000-memory.dmp

Filesize
96KB

Download
memory/1860-67-0x0000000000000000-mapping.dmp

Download
memory/1860-76-0x0000000005640000-0x0000000005704000-memory.dmp

Filesize
784KB

Download
memory/1924-73-0x000000006EBBD000-0x000000006EBC8000-memory.dmp

Filesize
44KB

Download
memory/1924-61-0x000000006EBBD000-0x000000006EBC8000-memory.dmp

Filesize
44KB

Download
memory/1924-58-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1924-57-0x000000006DBD1000-0x000000006DBD3000-memory.dmp

Filesize
8KB

Download
memory/1924-56-0x0000000070301000-0x0000000070304000-memory.dmp

Filesize
12KB

Download
memory/1924-55-0x0000000000000000-mapping.dmp

Download