asyncrat | f865adf4b5445985e0814ce70cc9b32701f1640de72f0facd385e1a5c549bae2

General

Target

Inquiry 24 FEB 2022.rtf
Size

10KB
MD5

657289d8ae04dadd13f446b97e7f23ae
SHA1

b75268f3acabd538a37c004830c6c5a9bd07af57
SHA256

f865adf4b5445985e0814ce70cc9b32701f1640de72f0facd385e1a5c549bae2
SHA512

9cb856069fcda83e8dabf9ffddc15bc4f967791f7d01e4ba5ebc68da7cffc33af721714a50671d1ca7222018e2541efab40724df5f96969819a961642211dd68

Score

10^/10

asyncrat 1 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

1

C2

212.193.30.54:8755

Mutex

gyQ12!.,=FD7trew

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1156-77-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1156-78-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1156-79-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1156-80-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

5 432 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

tpk.exe

pid process

1312 tpk.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

432 EQNEDT32.EXE
432 EQNEDT32.EXE
432 EQNEDT32.EXE
432 EQNEDT32.EXE

flow	pid	process
5	432	EQNEDT32.EXE

pid	process
1312	tpk.exe

pid	process
432	EQNEDT32.EXE
432	EQNEDT32.EXE
432	EQNEDT32.EXE
432	EQNEDT32.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tpk.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\Xhdgkfv = "\"C:\\Users\\Admin\\AppData\\Roaming\\Wdnzjeuy\\Xhdgkfv.exe\""	tpk.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tpk.exe

description pid process target process

PID 1312 set thread context of 1156 1312 tpk.exe MSBuild.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
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2004 timeout.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	pid	process	target process
PID 1312 set thread context of 1156	1312	tpk.exe	MSBuild.exe

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

pid	process
2004	timeout.exe

pid	process
432	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	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 created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	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 created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	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 MHTML Editor\shell	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	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 HTML Editor\shell\edit\command	WINWORD.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	WINWORD.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\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\shell\edit	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 HTML Editor\shell\edit\ = "&Edit"	WINWORD.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	WINWORD.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\Toolbar	WINWORD.EXE
Key deleted	\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\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\MenuExt	WINWORD.EXE

Modifies registry class 64 IoCs

Processes:

WINWORD.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

WINWORD.EXE

pid process

1184 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

tpk.exe

pid process

1312 tpk.exe
1312 tpk.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tpk.exe

description pid process

Token: SeDebugPrivilege 1312 tpk.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

WINWORD.EXE

pid process

1184 WINWORD.EXE
1184 WINWORD.EXE

pid	process
1184	WINWORD.EXE

pid	process
1312	tpk.exe
1312	tpk.exe

description	pid	process
Token: SeDebugPrivilege	1312	tpk.exe

pid	process
1184	WINWORD.EXE
1184	WINWORD.EXE

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

EQNEDT32.EXEtpk.execmd.exeWINWORD.EXE

description	pid	process	target process
PID 432 wrote to memory of 1312	432	EQNEDT32.EXE	tpk.exe
PID 432 wrote to memory of 1312	432	EQNEDT32.EXE	tpk.exe
PID 432 wrote to memory of 1312	432	EQNEDT32.EXE	tpk.exe
PID 432 wrote to memory of 1312	432	EQNEDT32.EXE	tpk.exe
PID 1312 wrote to memory of 868	1312	tpk.exe	cmd.exe
PID 1312 wrote to memory of 868	1312	tpk.exe	cmd.exe
PID 1312 wrote to memory of 868	1312	tpk.exe	cmd.exe
PID 1312 wrote to memory of 868	1312	tpk.exe	cmd.exe
PID 868 wrote to memory of 2004	868	cmd.exe	timeout.exe
PID 868 wrote to memory of 2004	868	cmd.exe	timeout.exe
PID 868 wrote to memory of 2004	868	cmd.exe	timeout.exe
PID 868 wrote to memory of 2004	868	cmd.exe	timeout.exe
PID 1184 wrote to memory of 1752	1184	WINWORD.EXE	splwow64.exe
PID 1184 wrote to memory of 1752	1184	WINWORD.EXE	splwow64.exe
PID 1184 wrote to memory of 1752	1184	WINWORD.EXE	splwow64.exe
PID 1184 wrote to memory of 1752	1184	WINWORD.EXE	splwow64.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe
PID 1312 wrote to memory of 1156	1312	tpk.exe	MSBuild.exe

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\Inquiry 24 FEB 2022.rtf"
1⤵
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1184

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1752

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:432

C:\Users\Admin\AppData\Roaming\tpk.exe
"C:\Users\Admin\AppData\Roaming\tpk.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1312

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 20
3⤵
- Suspicious use of WriteProcessMemory
PID:868

C:\Windows\SysWOW64\timeout.exe
timeout 20
4⤵
- Delays execution with timeout.exe
PID:2004

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
3⤵
PID:1156

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
C:\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
\Users\Admin\AppData\Roaming\tpk.exe
MD5
1dfb8f4b408ad8a763e4655e90c07093

SHA1
be332a245adcd81707dd3de6b60653e2f68a0256

SHA256
a7999bf95618f2e2c37c5d0e805f8ff4fa44d2254e0ee0175df630f386a0c979

SHA512
a7af9a29cc5942ca67473f0f25f919bd22b6510b8f9738121dbac2f248dcfdbadc086097c120e00bba3df1fd08f7881d54fa3ec0a3775a0ab01219aa5991f9df

Download Submit
memory/1156-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1156-76-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1156-83-0x0000000000E20000-0x0000000000E21000-memory.dmp

Filesize
4KB

Download
memory/1156-81-0x000000006B30E000-0x000000006B30F000-memory.dmp

Filesize
4KB

Download
memory/1156-80-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1156-79-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1156-78-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1156-77-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1184-56-0x00000000726C1000-0x00000000726C4000-memory.dmp

Filesize
12KB

Download
memory/1184-55-0x000000002F531000-0x000000002F532000-memory.dmp

Filesize
4KB

Download
memory/1184-60-0x000000007112D000-0x0000000071138000-memory.dmp

Filesize
44KB

Download
memory/1184-57-0x0000000070141000-0x0000000070143000-memory.dmp

Filesize
8KB

Download
memory/1184-58-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1184-59-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/1312-72-0x00000000049A0000-0x0000000004A3E000-memory.dmp

Filesize
632KB

Download
memory/1312-73-0x00000000055D0000-0x00000000055D1000-memory.dmp

Filesize
4KB

Download
memory/1312-74-0x0000000004720000-0x000000000476C000-memory.dmp

Filesize
304KB

Download
memory/1312-69-0x0000000000150000-0x00000000001FE000-memory.dmp

Filesize
696KB

Download
memory/1312-68-0x000000006B30E000-0x000000006B30F000-memory.dmp

Filesize
4KB

Download
memory/1752-71-0x000007FEFBD71000-0x000007FEFBD73000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads