1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6

Modify Registry

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	mcrdzkachk.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

Modify Registry

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	mcrdzkachk.exe

Windows security bypass 2 TTPs 5 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	mcrdzkachk.exe

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	mcrdzkachk.exe

Executes dropped EXE 5 IoCs

Processes:

mcrdzkachk.exekqacdypcxbldwvl.exepjvcthep.exejazctmfiuzdkf.exepjvcthep.exe

pid process

4624 mcrdzkachk.exe
2876 kqacdypcxbldwvl.exe
3336 pjvcthep.exe
4120 jazctmfiuzdkf.exe
504 pjvcthep.exe

pid	process
4624	mcrdzkachk.exe
2876	kqacdypcxbldwvl.exe
3336	pjvcthep.exe
4120	jazctmfiuzdkf.exe
504	pjvcthep.exe

UPX packed file 24 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1084-132-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
C:\Windows\SysWOW64\mcrdzkachk.exe	upx
C:\Windows\SysWOW64\mcrdzkachk.exe	upx
C:\Windows\SysWOW64\kqacdypcxbldwvl.exe	upx
C:\Windows\SysWOW64\kqacdypcxbldwvl.exe	upx
C:\Windows\SysWOW64\pjvcthep.exe	upx
C:\Windows\SysWOW64\pjvcthep.exe	upx
C:\Windows\SysWOW64\jazctmfiuzdkf.exe	upx
C:\Windows\SysWOW64\jazctmfiuzdkf.exe	upx
behavioral2/memory/4624-145-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/2876-146-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/3336-147-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/4120-148-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
C:\Windows\SysWOW64\pjvcthep.exe	upx
behavioral2/memory/504-151-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/1084-152-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/4624-153-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/2876-154-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/3336-155-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/4120-156-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
behavioral2/memory/1084-158-0x0000000000400000-0x00000000004A0000-memory.dmp	upx
C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	upx
C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	upx
C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe

Windows security modification 2 TTPs 6 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirstRunDisabled = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	mcrdzkachk.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

kqacdypcxbldwvl.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	kqacdypcxbldwvl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\yknflunv = "mcrdzkachk.exe"	kqacdypcxbldwvl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\nxenklfh = "kqacdypcxbldwvl.exe"	kqacdypcxbldwvl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "jazctmfiuzdkf.exe"	kqacdypcxbldwvl.exe

Enumerates connected drives 3 TTPs 64 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

Processes:

pjvcthep.exemcrdzkachk.exepjvcthep.exe

description	ioc	process
File opened (read-only)	\??\m:	pjvcthep.exe
File opened (read-only)	\??\f:	mcrdzkachk.exe
File opened (read-only)	\??\f:	pjvcthep.exe
File opened (read-only)	\??\s:	pjvcthep.exe
File opened (read-only)	\??\u:	pjvcthep.exe
File opened (read-only)	\??\z:	pjvcthep.exe
File opened (read-only)	\??\r:	pjvcthep.exe
File opened (read-only)	\??\y:	pjvcthep.exe
File opened (read-only)	\??\e:	pjvcthep.exe
File opened (read-only)	\??\g:	pjvcthep.exe
File opened (read-only)	\??\k:	pjvcthep.exe
File opened (read-only)	\??\v:	pjvcthep.exe
File opened (read-only)	\??\w:	pjvcthep.exe
File opened (read-only)	\??\o:	pjvcthep.exe
File opened (read-only)	\??\q:	pjvcthep.exe
File opened (read-only)	\??\g:	mcrdzkachk.exe
File opened (read-only)	\??\j:	pjvcthep.exe
File opened (read-only)	\??\l:	pjvcthep.exe
File opened (read-only)	\??\n:	pjvcthep.exe
File opened (read-only)	\??\t:	pjvcthep.exe
File opened (read-only)	\??\x:	pjvcthep.exe
File opened (read-only)	\??\h:	pjvcthep.exe
File opened (read-only)	\??\o:	mcrdzkachk.exe
File opened (read-only)	\??\b:	pjvcthep.exe
File opened (read-only)	\??\x:	pjvcthep.exe
File opened (read-only)	\??\y:	mcrdzkachk.exe
File opened (read-only)	\??\q:	pjvcthep.exe
File opened (read-only)	\??\a:	pjvcthep.exe
File opened (read-only)	\??\i:	mcrdzkachk.exe
File opened (read-only)	\??\t:	mcrdzkachk.exe
File opened (read-only)	\??\p:	pjvcthep.exe
File opened (read-only)	\??\w:	pjvcthep.exe
File opened (read-only)	\??\a:	mcrdzkachk.exe
File opened (read-only)	\??\q:	mcrdzkachk.exe
File opened (read-only)	\??\u:	mcrdzkachk.exe
File opened (read-only)	\??\w:	mcrdzkachk.exe
File opened (read-only)	\??\h:	mcrdzkachk.exe
File opened (read-only)	\??\z:	mcrdzkachk.exe
File opened (read-only)	\??\a:	pjvcthep.exe
File opened (read-only)	\??\i:	pjvcthep.exe
File opened (read-only)	\??\m:	pjvcthep.exe
File opened (read-only)	\??\b:	pjvcthep.exe
File opened (read-only)	\??\z:	pjvcthep.exe
File opened (read-only)	\??\j:	mcrdzkachk.exe
File opened (read-only)	\??\r:	pjvcthep.exe
File opened (read-only)	\??\l:	pjvcthep.exe
File opened (read-only)	\??\n:	pjvcthep.exe
File opened (read-only)	\??\v:	pjvcthep.exe
File opened (read-only)	\??\k:	mcrdzkachk.exe
File opened (read-only)	\??\l:	mcrdzkachk.exe
File opened (read-only)	\??\m:	mcrdzkachk.exe
File opened (read-only)	\??\s:	mcrdzkachk.exe
File opened (read-only)	\??\i:	pjvcthep.exe
File opened (read-only)	\??\p:	mcrdzkachk.exe
File opened (read-only)	\??\r:	mcrdzkachk.exe
File opened (read-only)	\??\v:	mcrdzkachk.exe
File opened (read-only)	\??\g:	pjvcthep.exe
File opened (read-only)	\??\h:	pjvcthep.exe
File opened (read-only)	\??\y:	pjvcthep.exe
File opened (read-only)	\??\e:	pjvcthep.exe
File opened (read-only)	\??\j:	pjvcthep.exe
File opened (read-only)	\??\k:	pjvcthep.exe
File opened (read-only)	\??\s:	pjvcthep.exe
File opened (read-only)	\??\t:	pjvcthep.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

Processes:

mcrdzkachk.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCScan = "0"	mcrdzkachk.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCDisable = "4294967197"	mcrdzkachk.exe

AutoIT Executable 11 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/4624-145-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/2876-146-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/3336-147-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/4120-148-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/504-151-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/1084-152-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/4624-153-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/2876-154-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/3336-155-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/4120-156-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe
behavioral2/memory/1084-158-0x0000000000400000-0x00000000004A0000-memory.dmp	autoit_exe

Drops file in System32 directory 9 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\kqacdypcxbldwvl.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File created	C:\Windows\SysWOW64\pjvcthep.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File created	C:\Windows\SysWOW64\jazctmfiuzdkf.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File opened for modification	C:\Windows\SysWOW64\msvbvm60.dll	mcrdzkachk.exe
File created	C:\Windows\SysWOW64\kqacdypcxbldwvl.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File opened for modification	C:\Windows\SysWOW64\mcrdzkachk.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File opened for modification	C:\Windows\SysWOW64\pjvcthep.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File opened for modification	C:\Windows\SysWOW64\jazctmfiuzdkf.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File created	C:\Windows\SysWOW64\mcrdzkachk.exe	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe

Drops file in Program Files directory 14 IoCs

Processes:

pjvcthep.exepjvcthep.exe

description	ioc	process
File created	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	pjvcthep.exe
File opened for modification	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	pjvcthep.exe
File opened for modification	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	pjvcthep.exe
File opened for modification	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.nal	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.nal	pjvcthep.exe
File created	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	pjvcthep.exe
File opened for modification	\??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.nal	pjvcthep.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.nal	pjvcthep.exe

Drops file in Windows directory 3 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exeWINWORD.EXE

description	ioc	process
File opened for modification	C:\Windows\mydoc.rtf	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
File opened for modification	C:\Windows\mydoc.rtf	WINWORD.EXE
File created	C:\Windows\~$mydoc.rtf	WINWORD.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 20 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com3 = "2ECBB1204493399A52CABAA132E9D4BF"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com4 = "7EFBFFF94F2A8512903CD72A7D93BDE4E637583667436335D7E9"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.WSH\ = "txtfile"	mcrdzkachk.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wsc	mcrdzkachk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.WSF\ = "txtfile"	mcrdzkachk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com1 = "334E2C7B9D5283206D3676A270272CDD7D8664AD"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com2 = "6ABEF9CCF917F1E383743A31819B3992B3FE028F4364033DE2C945E608A6"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.vbs	mcrdzkachk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.reg\ = "txtfile"	mcrdzkachk.exe
Key created	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000_Classes\Local Settings	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wsh	mcrdzkachk.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.wsf	mcrdzkachk.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.bat	mcrdzkachk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.bat\ = "txtfile"	mcrdzkachk.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.reg	mcrdzkachk.exe
Key created	\REGISTRY\MACHINE\Software\Classes\CLV.Classes	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\StartCom1 = "E0816BC5FE6A21DED27CD1D28A0C9017"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.vbs\ = "txtfile"	mcrdzkachk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\StartCom2 = "184EC77915E7DAB5B8CF7CE8EDE334BA"	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.wsc\ = "txtfile"	mcrdzkachk.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4984 WINWORD.EXE
4984 WINWORD.EXE

pid	process
4984	WINWORD.EXE
4984	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exekqacdypcxbldwvl.exepjvcthep.exejazctmfiuzdkf.exepjvcthep.exe

pid	process
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe

Suspicious use of FindShellTrayWindow 18 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exekqacdypcxbldwvl.exepjvcthep.exejazctmfiuzdkf.exepjvcthep.exe

pid	process
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe

Suspicious use of SendNotifyMessage 18 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exekqacdypcxbldwvl.exepjvcthep.exejazctmfiuzdkf.exepjvcthep.exe

pid	process
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
4624	mcrdzkachk.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
2876	kqacdypcxbldwvl.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
3336	pjvcthep.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
4120	jazctmfiuzdkf.exe
504	pjvcthep.exe
504	pjvcthep.exe
504	pjvcthep.exe

Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

4984 WINWORD.EXE
4984 WINWORD.EXE
4984 WINWORD.EXE
4984 WINWORD.EXE
4984 WINWORD.EXE
4984 WINWORD.EXE
4984 WINWORD.EXE

pid	process
4984	WINWORD.EXE
4984	WINWORD.EXE
4984	WINWORD.EXE
4984	WINWORD.EXE
4984	WINWORD.EXE
4984	WINWORD.EXE
4984	WINWORD.EXE

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exemcrdzkachk.exe

description	pid	process	target process
PID 1084 wrote to memory of 4624	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	mcrdzkachk.exe
PID 1084 wrote to memory of 4624	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	mcrdzkachk.exe
PID 1084 wrote to memory of 4624	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	mcrdzkachk.exe
PID 1084 wrote to memory of 2876	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	kqacdypcxbldwvl.exe
PID 1084 wrote to memory of 2876	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	kqacdypcxbldwvl.exe
PID 1084 wrote to memory of 2876	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	kqacdypcxbldwvl.exe
PID 1084 wrote to memory of 3336	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	pjvcthep.exe
PID 1084 wrote to memory of 3336	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	pjvcthep.exe
PID 1084 wrote to memory of 3336	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	pjvcthep.exe
PID 1084 wrote to memory of 4120	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	jazctmfiuzdkf.exe
PID 1084 wrote to memory of 4120	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	jazctmfiuzdkf.exe
PID 1084 wrote to memory of 4120	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	jazctmfiuzdkf.exe
PID 4624 wrote to memory of 504	4624	mcrdzkachk.exe	pjvcthep.exe
PID 4624 wrote to memory of 504	4624	mcrdzkachk.exe	pjvcthep.exe
PID 4624 wrote to memory of 504	4624	mcrdzkachk.exe	pjvcthep.exe
PID 1084 wrote to memory of 4984	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	WINWORD.EXE
PID 1084 wrote to memory of 4984	1084	1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe	WINWORD.EXE

C:\Users\Admin\AppData\Local\Temp\1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe
"C:\Users\Admin\AppData\Local\Temp\1704c4d430de068a53f58f4f25b1910c7e38f4fbf901d8a4ed77749e01d358f6.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\mcrdzkachk.exe
mcrdzkachk.exe
2⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Enumerates connected drives
- Modifies WinLogon
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4624

C:\Windows\SysWOW64\pjvcthep.exe
C:\Windows\system32\pjvcthep.exe
3⤵
- Executes dropped EXE
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:504

C:\Windows\SysWOW64\kqacdypcxbldwvl.exe
kqacdypcxbldwvl.exe
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2876

C:\Windows\SysWOW64\pjvcthep.exe
pjvcthep.exe
2⤵
- Executes dropped EXE
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3336

C:\Windows\SysWOW64\jazctmfiuzdkf.exe
jazctmfiuzdkf.exe
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4120

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
2⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4984

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Disabling Security Tools

T1089

Credential Access

Discovery

Query Registry

System Information Discovery