Analysis Overview
SHA256
76782ff9477534ad7cdd3235749e7c508174042c9300c136291b8cdee3338544
Threat Level: Known bad
The file dfbd4be3187891db496fee51595274f1 was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
Creates new service(s)
Modifies Windows Firewall
Sets service image path in registry
Executes dropped EXE
Deletes itself
Checks computer location settings
Suspicious use of SetThreadContext
Launches sc.exe
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-26 17:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-26 17:41
Reported
2024-03-26 17:44
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
155s
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\dlxntsca\ImagePath = "C:\\Windows\\SysWOW64\\dlxntsca\\pggzpopd.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\dlxntsca\pggzpopd.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 404 set thread context of 4612 | N/A | C:\Windows\SysWOW64\dlxntsca\pggzpopd.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
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\dlxntsca\pggzpopd.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe
"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dlxntsca\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pggzpopd.exe" C:\Windows\SysWOW64\dlxntsca\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dlxntsca binPath= "C:\Windows\SysWOW64\dlxntsca\pggzpopd.exe /d\"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dlxntsca "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dlxntsca
C:\Windows\SysWOW64\dlxntsca\pggzpopd.exe
C:\Windows\SysWOW64\dlxntsca\pggzpopd.exe /d"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.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 3468 -ip 3468
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3468 -s 1036
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 404 -ip 404
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 536
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1420 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 89.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| GB | 142.250.187.202:443 | chromewebstore.googleapis.com | tcp |
| GB | 142.250.187.202:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 202.187.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 13.107.246.64:443 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.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 | 104.47.53.36:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| 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 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 67.195.204.77:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 73.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| BE | 64.233.167.26:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | 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 | 94.100.180.31:25 | mxs.mail.ru | tcp |
| 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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | refabyd.info | udp |
| US | 8.8.8.8:53 | 89.65.42.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
Files
memory/3468-1-0x0000000002EC0000-0x0000000002FC0000-memory.dmp
memory/3468-2-0x0000000002E60000-0x0000000002E73000-memory.dmp
memory/3468-4-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/3468-5-0x0000000000400000-0x0000000002CB9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\pggzpopd.exe
| MD5 | 340b4d9596abb7a55bb99f10ab1bedf3 |
| SHA1 | ebd657e7b9a02b95fe4c70c7b68dde5b101e984c |
| SHA256 | d3b91a31a2c61f632ec87613c61b5440ddb70c41a60669294bd1514113f848a3 |
| SHA512 | 2796354c759b9ef9ddd461136a3c6af473914fac023400a4b0808c77fe3369fdf9cbb9e9b470057a3f562f1248156f7cb54a8dd6ec8bdaa01f39678ec5f9bd0f |
memory/3468-9-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/3468-10-0x0000000002E60000-0x0000000002E73000-memory.dmp
memory/4612-12-0x00000000003B0000-0x00000000003C5000-memory.dmp
memory/4612-13-0x00000000003B0000-0x00000000003C5000-memory.dmp
memory/404-11-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/404-14-0x0000000002EA0000-0x0000000002FA0000-memory.dmp
memory/4612-16-0x00000000003B0000-0x00000000003C5000-memory.dmp
memory/404-17-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/4612-18-0x00000000003B0000-0x00000000003C5000-memory.dmp
memory/4612-19-0x00000000003B0000-0x00000000003C5000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-26 17:41
Reported
2024-03-26 17:44
Platform
win7-20240221-en
Max time kernel
148s
Max time network
154s
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\vjzwfnmt = "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\vjzwfnmt\ImagePath = "C:\\Windows\\SysWOW64\\vjzwfnmt\\uurmpgxp.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\vjzwfnmt\uurmpgxp.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2572 set thread context of 2448 | N/A | C:\Windows\SysWOW64\vjzwfnmt\uurmpgxp.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
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe
"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vjzwfnmt\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uurmpgxp.exe" C:\Windows\SysWOW64\vjzwfnmt\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vjzwfnmt binPath= "C:\Windows\SysWOW64\vjzwfnmt\uurmpgxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vjzwfnmt "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vjzwfnmt
C:\Windows\SysWOW64\vjzwfnmt\uurmpgxp.exe
C:\Windows\SysWOW64\vjzwfnmt\uurmpgxp.exe /d"C:\Users\Admin\AppData\Local\Temp\dfbd4be3187891db496fee51595274f1.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 |
| 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 | 104.47.53.36:25 | 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 | 67.195.228.109:25 | mta6.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| BE | 64.233.167.27:25 | 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/1224-2-0x0000000000230000-0x0000000000243000-memory.dmp
memory/1224-1-0x0000000002E20000-0x0000000002F20000-memory.dmp
memory/1224-4-0x0000000000400000-0x0000000002CB9000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\uurmpgxp.exe
| MD5 | 9daafea02806921d1e1e349c2f74ab76 |
| SHA1 | 3580329ddd7ec73dfe6817dcf157b8d8dca25b94 |
| SHA256 | bab7e35eeb1be6d440da7b2ee85435f716c17a15b84e769a6f32115d8d432c62 |
| SHA512 | 9eda89259d6442add677d43ecc9f606afbf18aefffa5f44b1c837e3736885ed299ec32048327402017e36a7a07d8438121bae1fa591b2f98a07bf3efee0dee0d |
C:\Windows\SysWOW64\vjzwfnmt\uurmpgxp.exe
| MD5 | 9fb67a9d11d940db577ea05d08f315d0 |
| SHA1 | 4abedf1b21aa4afe7240fcd1c0e2c5908796da92 |
| SHA256 | 7e6d17084aa95217ddd11dbda9db15476bb478781f453451bd384c10c9889c07 |
| SHA512 | 91039a0678d635bacaafac23ace674e7d6fd3d6ea6b3b70e05661e2d3c22246efd14bc8fa1a91a614e5aecc9d20fe98060c0d7c25928786913038275ce8fb587 |
memory/1224-8-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/1224-9-0x0000000002E20000-0x0000000002F20000-memory.dmp
memory/2572-10-0x0000000002DB0000-0x0000000002EB0000-memory.dmp
memory/2448-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2448-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2572-15-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/2448-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2572-17-0x0000000000400000-0x0000000002CB9000-memory.dmp
memory/2448-21-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2448-22-0x0000000000080000-0x0000000000095000-memory.dmp