Analysis Overview
SHA256
82aa9a86e40c08cd9fb8a692485ed58cd00e737747da32b80b7cd93809ef7de5
Threat Level: Known bad
The file 82aa9a86e40c08cd9fb8a692485ed58cd00e737747da32b80b7cd93809ef7de5 was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
Unsigned PE
System Location Discovery: System Language Discovery
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-31 13:09
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-31 13:09
Reported
2024-08-31 13:12
Platform
win7-20240708-en
Max time kernel
145s
Max time network
146s
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\iduyeemf = "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\iduyeemf\ImagePath = "C:\\Windows\\SysWOW64\\iduyeemf\\bexfdfnx.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\iduyeemf\bexfdfnx.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2808 set thread context of 2724 | N/A | C:\Windows\SysWOW64\iduyeemf\bexfdfnx.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:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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\iduyeemf\bexfdfnx.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\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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe
"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iduyeemf\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bexfdfnx.exe" C:\Windows\SysWOW64\iduyeemf\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create iduyeemf binPath= "C:\Windows\SysWOW64\iduyeemf\bexfdfnx.exe /d\"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description iduyeemf "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start iduyeemf
C:\Windows\SysWOW64\iduyeemf\bexfdfnx.exe
C:\Windows\SysWOW64\iduyeemf\bexfdfnx.exe /d"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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 | 52.101.40.26:25 | 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 | mta7.am0.yahoodns.net | udp |
| US | 67.195.228.110:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| NL | 142.251.18.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
Files
memory/2372-2-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2372-1-0x0000000000990000-0x0000000000A90000-memory.dmp
memory/2372-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\bexfdfnx.exe
| MD5 | a9e0fba0a212c192b23eaba74a4aaca9 |
| SHA1 | ed41e0065750d177257e23614ad6e01263e833e3 |
| SHA256 | 7235ad0a4c22ceeb1ba372d9803b2a3a686c7e6f317ae6a9c64c474a23fcdb23 |
| SHA512 | 0f0f5c3906db222d76b39e69f9ed9553c4c9b87f21d72750e208ed582f934060f075a13589546492aef205e5dc17e8a56538bcea12993e7c5f1134e42552dcce |
memory/2372-8-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2372-10-0x0000000000990000-0x0000000000A90000-memory.dmp
memory/2372-11-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2372-9-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2724-12-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2724-15-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2724-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2724-18-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2808-16-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2724-19-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-31 13:09
Reported
2024-08-31 13:12
Platform
win10v2004-20240802-en
Max time kernel
149s
Max time network
141s
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\ouwuvlbg\ImagePath = "C:\\Windows\\SysWOW64\\ouwuvlbg\\bqdzlkdp.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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\ouwuvlbg\bqdzlkdp.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 612 set thread context of 3660 | N/A | C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.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 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 |
| Key opened | \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\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.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\sc.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe
"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ouwuvlbg\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqdzlkdp.exe" C:\Windows\SysWOW64\ouwuvlbg\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ouwuvlbg binPath= "C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe /d\"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ouwuvlbg "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ouwuvlbg
C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe
C:\Windows\SysWOW64\ouwuvlbg\bqdzlkdp.exe /d"C:\Users\Admin\AppData\Local\Temp\072e795c44b87d1eb54005be791e75db47cb9717e43b300d3e27b6c9d99523fd.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 444 -p 2268 -ip 2268
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2268 -s 648
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 612 -ip 612
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 612 -s 508
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 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.231.239.246:80 | 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 | 52.101.8.49:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 246.239.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 97.17.167.52.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 | mta5.am0.yahoodns.net | udp |
| US | 67.195.228.110:25 | mta5.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 | 172.214.232.199.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 | 142.250.153.26:25 | 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 | mail.ru | udp |
| US | 8.8.8.8:53 | mxs.mail.ru | udp |
| RU | 217.69.139.150:25 | mxs.mail.ru | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 43.58.199.20.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 | 14.227.111.52.in-addr.arpa | 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 | 10.28.171.150.in-addr.arpa | 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 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/2268-2-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/2268-1-0x0000000000A20000-0x0000000000B20000-memory.dmp
memory/2268-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\bqdzlkdp.exe
| MD5 | 660e9f50291f6b791b6502dccc800e22 |
| SHA1 | 69ab6b9626e3bbf495d1011a8bdbd9531b3b22fc |
| SHA256 | 5d565f9bd4fe9531b9a50a0ba456edd7ffc2ce4ec9514b17a5c2424cf99c818d |
| SHA512 | 4dc0af8afbf0366c7b7b9a5b132830ac7162d1c4fce1c7cf4a28284a06e4fce4e97f1bb4f84ea6bafea1b3e13cd84c7c6a1df1826293020e21e28c4bc47e849a |
memory/612-8-0x0000000000400000-0x0000000000870000-memory.dmp
memory/612-10-0x0000000000400000-0x0000000000870000-memory.dmp
memory/2268-15-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2268-14-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/2268-13-0x0000000000400000-0x0000000000870000-memory.dmp
memory/612-16-0x0000000000400000-0x0000000000870000-memory.dmp
memory/3660-17-0x0000000000EE0000-0x0000000000EF5000-memory.dmp
memory/3660-9-0x0000000000EE0000-0x0000000000EF5000-memory.dmp
memory/3660-19-0x0000000000EE0000-0x0000000000EF5000-memory.dmp
memory/3660-20-0x0000000000EE0000-0x0000000000EF5000-memory.dmp
memory/3660-21-0x0000000000EE0000-0x0000000000EF5000-memory.dmp