Analysis Overview
SHA256
ecc447dac820e56985af81703fbca424d9309a9ebcfb152e993bc9ccc275c920
Threat Level: Known bad
The file 7add49d3f94626db3bfd88652c55403b.zip was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Sets service image path in registry
Modifies Windows Firewall
Creates new service(s)
Deletes itself
Checks computer location settings
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-01 04:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-01 04:20
Reported
2024-09-01 04:23
Platform
win7-20240708-en
Max time kernel
145s
Max time network
145s
Command Line
Signatures
Tofsee
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\chlnykou = "0" | C:\Windows\SysWOW64\svchost.exe | N/A |
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\chlnykou\ImagePath = "C:\\Windows\\SysWOW64\\chlnykou\\pnxvvluk.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2908 set thread context of 3028 | N/A | C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe
"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chlnykou\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnxvvluk.exe" C:\Windows\SysWOW64\chlnykou\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create chlnykou binPath= "C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe /d\"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description chlnykou "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start chlnykou
C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe
C:\Windows\SysWOW64\chlnykou\pnxvvluk.exe /d"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"
C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
C:\Windows\SysWOW64\svchost.exe
svchost.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | microsoft.com | udp |
| NL | 20.76.201.171:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.41.26:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 67.195.228.106:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 108.177.96.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2688-1-0x00000000009A0000-0x0000000000AA0000-memory.dmp
memory/2688-2-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2688-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\pnxvvluk.exe
| MD5 | b9ec354f32ab40123fecaa6748ccdb5f |
| SHA1 | 483dcd7a4c1aa3b844d90dc5c3db56871d6e8ea8 |
| SHA256 | 646d27461f1ae7073dd8898e96f12064e968897471d57c5f88a1467015f8102a |
| SHA512 | 69c0900d9193b8a22c1d170f05379e207df8b4d5eacb382c7836fd2342c0f8dc09ea39689dbfe4615ee1fa192a740e11aadd554f626e77b88ad4676e3bf5cd84 |
memory/2688-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2688-9-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2688-8-0x0000000000400000-0x0000000000870000-memory.dmp
memory/3028-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/3028-17-0x0000000000080000-0x0000000000095000-memory.dmp
memory/3028-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/3028-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2908-15-0x0000000000400000-0x0000000000870000-memory.dmp
memory/3028-18-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-01 04:20
Reported
2024-09-01 04:23
Platform
win10v2004-20240802-en
Max time kernel
145s
Max time network
142s
Command Line
Signatures
Tofsee
Creates new service(s)
Modifies Windows Firewall
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Sets service image path in registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\aaftwqcu\ImagePath = "C:\\Windows\\SysWOW64\\aaftwqcu\\trgsmitj.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4176 set thread context of 1432 | N/A | C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe | C:\Windows\SysWOW64\svchost.exe |
Launches sc.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\sc.exe | N/A |
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\svchost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\sc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe
"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aaftwqcu\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\trgsmitj.exe" C:\Windows\SysWOW64\aaftwqcu\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create aaftwqcu binPath= "C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe /d\"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description aaftwqcu "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start aaftwqcu
C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe
C:\Windows\SysWOW64\aaftwqcu\trgsmitj.exe /d"C:\Users\Admin\AppData\Local\Temp\d15dc4c9f5cc18798572b527797678adedd953ae755a9efadbeaf76353cc199f.exe"
C:\Windows\SysWOW64\netsh.exe
"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3808 -ip 3808
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3808 -s 1028
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4176 -ip 4176
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4176 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.112.250.133:80 | microsoft.com | tcp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | microsoft-com.mail.protection.outlook.com | udp |
| US | 52.101.40.26:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 133.250.112.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 98.136.96.77:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 108.177.96.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 94.100.180.31:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 198.111.78.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
Files
memory/3808-1-0x0000000000B40000-0x0000000000C40000-memory.dmp
memory/3808-2-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/3808-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\trgsmitj.exe
| MD5 | 9277bd5a2eaac18df9b2621e6d61124a |
| SHA1 | dea7850d74593c9d23b56b40ac23c25dcac25ecf |
| SHA256 | c22352f1c4c8c6f467cd1acaf807cab43a1747ec3c3d954dce3f8d73c1cef7ae |
| SHA512 | f25bc518f1b58b979f57bc1f05cc5e6eb48869cc456581435d2ce358040c8228de008b951465f8774a8d73e2bcbb7f7e51a7ad0f430e9c6743776b06faaccdaa |
memory/3808-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/3808-8-0x0000000000400000-0x0000000000870000-memory.dmp
memory/3808-9-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/4176-11-0x0000000000400000-0x0000000000870000-memory.dmp
memory/4176-12-0x0000000000400000-0x0000000000870000-memory.dmp
memory/1432-13-0x00000000008F0000-0x0000000000905000-memory.dmp
memory/1432-15-0x00000000008F0000-0x0000000000905000-memory.dmp
memory/1432-16-0x00000000008F0000-0x0000000000905000-memory.dmp
memory/4176-18-0x0000000000400000-0x0000000000870000-memory.dmp