asyncrat | d9c6ae4ceb7ede24afeb4c598e3fef327002b6583272a4fa07ba868578d3d62a

General

Target

177.xlsx
Size

176KB
MD5

5ffe37b62296142c38cd3660a5c15351
SHA1

472afded700a957d3a862cc49c0a7519092d00fb
SHA256

d9c6ae4ceb7ede24afeb4c598e3fef327002b6583272a4fa07ba868578d3d62a
SHA512

85f3b64ebe22cf5fa505c6f0611745146a45c91a20ff22761174d101d02d0851af381491df485f431e639f45ed734ada373043cb76ccda302a6a9289b1a36f97

Score

10^/10

asyncrat default rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

37.0.14.204:2022

37.0.14.204:2019

37.0.14.204:5631

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata
suricata: ET MALWARE MSIL/GenKryptik.FQRH Download Request
suricata: ET MALWARE MSIL/GenKryptik.FQRH Download Request
suricata
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata

Async RAT payload 7 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1736-78-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1736-79-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1736-81-0x000000000040C71E-mapping.dmp	asyncrat
behavioral1/memory/1736-80-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1736-84-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1736-86-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1736-88-0x00000000004B0000-0x00000000004D4000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

3 1488 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

828 vbc.exe
1736 vbc.exe
Loads dropped DLL 2 IoCs

Processes:

EQNEDT32.EXEvbc.exe

pid process

1488 EQNEDT32.EXE
828 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
3	1488	EQNEDT32.EXE

pid	process
828	vbc.exe
1736	vbc.exe

pid	process
1488	EQNEDT32.EXE
828	vbc.exe

Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 828 set thread context of 1736 828 vbc.exe vbc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1732 timeout.exe
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

1488 EQNEDT32.EXE

description	pid	process	target process
PID 828 set thread context of 1736	828	vbc.exe	vbc.exe

pid	process
1732	timeout.exe

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

pid	process
1488	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 31 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key deleted	\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	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\ = "&Edit"	EXCEL.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\ = "\"C:\\Program Files (x86)\\Microsoft Office\\Office14\\WINWORD.EXE\" /n \"%1\""	EXCEL.EXE
Key created	\REGISTRY\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\ = "&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
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command	EXCEL.EXE
Key deleted	\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	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\command\command = 7800620027004200560035002100210021002100210021002100210021004d004b004b0053006b0057004f0052004400460069006c00650073003e00620069002400540021005600210030005a003d007b0050006b00300076006d007e0041005a00750020002f006e002000220025003100220000000000	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
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor\shell\edit	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit\COMMAND	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default HTML Editor	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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	EXCEL.EXE
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Default MHTML Editor\shell\edit	EXCEL.EXE

Modifies registry class 64 IoCs

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2004 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exevbc.exe

pid process

836 powershell.exe
828 vbc.exe
828 vbc.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exevbc.exevbc.exe

description pid process

Token: SeDebugPrivilege 836 powershell.exe
Token: SeDebugPrivilege 828 vbc.exe
Token: SeDebugPrivilege 1736 vbc.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

2004 EXCEL.EXE
2004 EXCEL.EXE
2004 EXCEL.EXE

pid	process
2004	EXCEL.EXE

pid	process
836	powershell.exe
828	vbc.exe
828	vbc.exe

description	pid	process
Token: SeDebugPrivilege	836	powershell.exe
Token: SeDebugPrivilege	828	vbc.exe
Token: SeDebugPrivilege	1736	vbc.exe

pid	process
2004	EXCEL.EXE
2004	EXCEL.EXE
2004	EXCEL.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

EQNEDT32.EXEvbc.exevbc.execmd.exe

description	pid	process	target process
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 1488 wrote to memory of 828	1488	EQNEDT32.EXE	vbc.exe
PID 828 wrote to memory of 836	828	vbc.exe	powershell.exe
PID 828 wrote to memory of 836	828	vbc.exe	powershell.exe
PID 828 wrote to memory of 836	828	vbc.exe	powershell.exe
PID 828 wrote to memory of 836	828	vbc.exe	powershell.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 828 wrote to memory of 1736	828	vbc.exe	vbc.exe
PID 1736 wrote to memory of 580	1736	vbc.exe	cmd.exe
PID 1736 wrote to memory of 580	1736	vbc.exe	cmd.exe
PID 1736 wrote to memory of 580	1736	vbc.exe	cmd.exe
PID 1736 wrote to memory of 580	1736	vbc.exe	cmd.exe
PID 580 wrote to memory of 1732	580	cmd.exe	timeout.exe
PID 580 wrote to memory of 1732	580	cmd.exe	timeout.exe
PID 580 wrote to memory of 1732	580	cmd.exe	timeout.exe
PID 580 wrote to memory of 1732	580	cmd.exe	timeout.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\177.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2004

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:1488

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:828

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
3⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:836

C:\Users\Public\vbc.exe
C:\Users\Public\vbc.exe
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD10E.tmp.bat""
4⤵
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SysWOW64\timeout.exe
timeout 3
5⤵
- Delays execution with timeout.exe
PID:1732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD10E.tmp.bat
Filesize
137B

MD5
d77ff0d8fc8b0dce5adf0c63755f7acf

SHA1
b586892a0c46fb7736aa729b6a7719eef2670d6e

SHA256
87dccc31d590a6bccf6ec79846155893ad538f175d4a9115bf26c124cdcfb73e

SHA512
0a9dcae0aebb080ba0274595aa82afd7a26665e969c1fa84e9e4203e5f5c4f5eb97eae8e6fd6b8bf28e6714103b160491e013884ab75049ce131f787419d61ad

Download Submit
C:\Users\Public\vbc.exe
Filesize
502KB

MD5
36b5e3120ffe3468078cb5aa1a55a9da

SHA1
ea449fdeb6b5dc01c4f9cf503d2c7a5b66d5cc60

SHA256
d9837c768f392a3bb98836aedc39c89e1b0641f1b51949d744bfb1a128cb23aa

SHA512
e7e730e6b74ee4c9eec154908c991c26a548bb35e31b0e8e3cabd2e7457470ec967903060ceb74ec2e3727a2db16c378b43cad9b27eabcafc5d4a3062de700a3

Download Submit
C:\Users\Public\vbc.exe
Filesize
502KB

MD5
36b5e3120ffe3468078cb5aa1a55a9da

SHA1
ea449fdeb6b5dc01c4f9cf503d2c7a5b66d5cc60

SHA256
d9837c768f392a3bb98836aedc39c89e1b0641f1b51949d744bfb1a128cb23aa

SHA512
e7e730e6b74ee4c9eec154908c991c26a548bb35e31b0e8e3cabd2e7457470ec967903060ceb74ec2e3727a2db16c378b43cad9b27eabcafc5d4a3062de700a3

Download Submit
C:\Users\Public\vbc.exe
Filesize
502KB

MD5
36b5e3120ffe3468078cb5aa1a55a9da

SHA1
ea449fdeb6b5dc01c4f9cf503d2c7a5b66d5cc60

SHA256
d9837c768f392a3bb98836aedc39c89e1b0641f1b51949d744bfb1a128cb23aa

SHA512
e7e730e6b74ee4c9eec154908c991c26a548bb35e31b0e8e3cabd2e7457470ec967903060ceb74ec2e3727a2db16c378b43cad9b27eabcafc5d4a3062de700a3

Download Submit
\Users\Public\vbc.exe
Filesize
502KB

MD5
36b5e3120ffe3468078cb5aa1a55a9da

SHA1
ea449fdeb6b5dc01c4f9cf503d2c7a5b66d5cc60

SHA256
d9837c768f392a3bb98836aedc39c89e1b0641f1b51949d744bfb1a128cb23aa

SHA512
e7e730e6b74ee4c9eec154908c991c26a548bb35e31b0e8e3cabd2e7457470ec967903060ceb74ec2e3727a2db16c378b43cad9b27eabcafc5d4a3062de700a3

Download Submit
\Users\Public\vbc.exe
Filesize
502KB

MD5
36b5e3120ffe3468078cb5aa1a55a9da

SHA1
ea449fdeb6b5dc01c4f9cf503d2c7a5b66d5cc60

SHA256
d9837c768f392a3bb98836aedc39c89e1b0641f1b51949d744bfb1a128cb23aa

SHA512
e7e730e6b74ee4c9eec154908c991c26a548bb35e31b0e8e3cabd2e7457470ec967903060ceb74ec2e3727a2db16c378b43cad9b27eabcafc5d4a3062de700a3

Download Submit
memory/580-89-0x0000000000000000-mapping.dmp

Download
memory/828-66-0x00000000021B0000-0x00000000021FC000-memory.dmp

Filesize
304KB

Download
memory/828-64-0x0000000000AB0000-0x0000000000B34000-memory.dmp

Filesize
528KB

Download
memory/828-65-0x0000000002120000-0x00000000021AA000-memory.dmp

Filesize
552KB

Download
memory/828-61-0x0000000000000000-mapping.dmp

Download
memory/836-73-0x0000000068850000-0x0000000068DFB000-memory.dmp

Filesize
5.7MB

Download
memory/836-68-0x0000000000000000-mapping.dmp

Download
memory/836-70-0x00000000023C0000-0x0000000002403000-memory.dmp

Filesize
268KB

Download
memory/836-71-0x0000000068850000-0x0000000068DFB000-memory.dmp

Filesize
5.7MB

Download
memory/1732-91-0x0000000000000000-mapping.dmp

Download
memory/1736-78-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-84-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-76-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-88-0x00000000004B0000-0x00000000004D4000-memory.dmp

Filesize
144KB

Download
memory/1736-79-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-81-0x000000000040C71E-mapping.dmp

Download
memory/1736-80-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1736-86-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2004-93-0x00000000722FD000-0x0000000072308000-memory.dmp

Filesize
44KB

Download
memory/2004-54-0x000000002F581000-0x000000002F584000-memory.dmp

Filesize
12KB

Download
memory/2004-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2004-72-0x00000000722FD000-0x0000000072308000-memory.dmp

Filesize
44KB

Download
memory/2004-55-0x0000000071311000-0x0000000071313000-memory.dmp

Filesize
8KB

Download
memory/2004-58-0x00000000722FD000-0x0000000072308000-memory.dmp

Filesize
44KB

Download
memory/2004-92-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2004-57-0x0000000075521000-0x0000000075523000-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