Analysis Overview
SHA256
d5765dff5690f5f9a337c9fa0047b8c58e9f2ec2b6211f8482d57c5bf251308c
Threat Level: Known bad
The file d318dc7b92c68cddb6ac8e82af8a7439.zip was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
Modifies Windows Firewall
Sets service image path in registry
Creates new service(s)
Executes dropped EXE
Checks computer location settings
Deletes itself
Suspicious use of SetThreadContext
Launches sc.exe
Unsigned PE
System Location Discovery: System Language Discovery
Program crash
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-02 00:24
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-02 00:24
Reported
2024-09-02 00:26
Platform
win7-20240729-en
Max time kernel
146s
Max time network
149s
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\rmzdzfvk = "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\rmzdzfvk\ImagePath = "C:\\Windows\\SysWOW64\\rmzdzfvk\\mkzlfbmc.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\rmzdzfvk\mkzlfbmc.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3024 set thread context of 2708 | N/A | C:\Windows\SysWOW64\rmzdzfvk\mkzlfbmc.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 |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| 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:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.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:\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\rmzdzfvk\mkzlfbmc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe
"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rmzdzfvk\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mkzlfbmc.exe" C:\Windows\SysWOW64\rmzdzfvk\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rmzdzfvk binPath= "C:\Windows\SysWOW64\rmzdzfvk\mkzlfbmc.exe /d\"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rmzdzfvk "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rmzdzfvk
C:\Windows\SysWOW64\rmzdzfvk\mkzlfbmc.exe
C:\Windows\SysWOW64\rmzdzfvk\mkzlfbmc.exe /d"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.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 | 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 | 98.136.96.91:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 209.85.202.26:25 | 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/2524-2-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2524-1-0x00000000005B0000-0x00000000006B0000-memory.dmp
memory/2524-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\mkzlfbmc.exe
| MD5 | c4d3b9592cb3f49aaa17f171c507bb85 |
| SHA1 | 7b13390be262cb14731a031334fd9240915f4bba |
| SHA256 | 95abfcb68b41d9cf08ef8e92dc8f7bb84083a95a7b4a8a65d637a3503adedb52 |
| SHA512 | 137de3766ac3da5a10ed01f8fc4cee9dd995e79ac213d660e00bd11e9642fbdffa0580977801cac318cb5749d534c367389c69c165a600369f6be6360297766f |
memory/2524-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2524-9-0x0000000000020000-0x0000000000033000-memory.dmp
memory/2524-8-0x0000000000400000-0x0000000000448000-memory.dmp
memory/2708-11-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2708-14-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/2708-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2708-17-0x00000000000C0000-0x00000000000D5000-memory.dmp
memory/3024-15-0x0000000000400000-0x0000000000448000-memory.dmp
memory/2708-18-0x00000000000C0000-0x00000000000D5000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-02 00:24
Reported
2024-09-02 00:26
Platform
win10v2004-20240802-en
Max time kernel
146s
Max time network
150s
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\cezylhfx\ImagePath = "C:\\Windows\\SysWOW64\\cezylhfx\\tjeqkwas.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.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\cezylhfx\tjeqkwas.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1524 set thread context of 4364 | N/A | C:\Windows\SysWOW64\cezylhfx\tjeqkwas.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\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\cezylhfx\tjeqkwas.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| 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\svchost.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\cezylhfx\tjeqkwas.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.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 |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe
"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cezylhfx\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tjeqkwas.exe" C:\Windows\SysWOW64\cezylhfx\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cezylhfx binPath= "C:\Windows\SysWOW64\cezylhfx\tjeqkwas.exe /d\"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cezylhfx "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cezylhfx
C:\Windows\SysWOW64\cezylhfx\tjeqkwas.exe
C:\Windows\SysWOW64\cezylhfx\tjeqkwas.exe /d"C:\Users\Admin\AppData\Local\Temp\23f1145599ca4f2836be5ba2ef445c06709df2e71dc30d6cd534b60810673716.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 452 -p 4380 -ip 4380
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 676
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1524 -ip 1524
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1524 -s 512
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 20.236.44.162:80 | 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 | 52.101.42.16:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 162.44.236.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 209.205.72.20.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 | mta5.am0.yahoodns.net | udp |
| US | 67.195.204.74:25 | mta5.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | defeatwax.ru | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.190.18.2.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 |
| IE | 209.85.203.26:25 | 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 | refabyd.info | 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 | 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 |
Files
memory/4380-1-0x0000000000780000-0x0000000000880000-memory.dmp
memory/4380-2-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/4380-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tjeqkwas.exe
| MD5 | 895fb2748ebd30da87c3044eaf5f9400 |
| SHA1 | 0af7a97016c05528a4ec6d6b21c62c8581367fe7 |
| SHA256 | d9c8a602dd41073d1baf29d0533423c355bbabdf217b73109ddd423caf702a97 |
| SHA512 | c50997a05543e07ba73bed7dc440b2a21ab66c4013fd439b1c25160e7fa0b085d796d2c1e02653092b304670ecec56c266b1bd58a73b3de9ac64525b79fbc239 |
memory/4380-10-0x0000000000400000-0x0000000000415000-memory.dmp
memory/4380-9-0x00000000001C0000-0x00000000001D3000-memory.dmp
memory/4380-8-0x0000000000400000-0x0000000000448000-memory.dmp
memory/1524-11-0x0000000000400000-0x0000000000448000-memory.dmp
memory/1524-12-0x0000000000400000-0x0000000000448000-memory.dmp
memory/1524-13-0x0000000000400000-0x0000000000448000-memory.dmp
memory/4364-14-0x0000000001250000-0x0000000001265000-memory.dmp
memory/4364-16-0x0000000001250000-0x0000000001265000-memory.dmp
memory/4364-17-0x0000000001250000-0x0000000001265000-memory.dmp
memory/1524-19-0x0000000000400000-0x0000000000448000-memory.dmp