Analysis Overview
SHA256
f1698aadacb8433276f1e225a8c00f0311d6bb2b721e40e2f88e4fecc3d6cd3e
Threat Level: Known bad
The file c58c41fb9de90f13223980a5147fdf71 was found to be: Known bad.
Malicious Activity Summary
Tofsee
Windows security bypass
Creates new service(s)
Sets service image path in registry
Modifies Windows Firewall
Checks computer location settings
Deletes itself
Executes dropped EXE
Suspicious use of SetThreadContext
Launches sc.exe
Enumerates physical storage devices
Unsigned PE
Program crash
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-13 09:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-13 09:41
Reported
2024-03-13 09:43
Platform
win7-20240221-en
Max time kernel
145s
Max time network
137s
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\hhmdterx = "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\hhmdterx\ImagePath = "C:\\Windows\\SysWOW64\\hhmdterx\\jgzopasf.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\hhmdterx\jgzopasf.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2784 set thread context of 2700 | N/A | C:\Windows\SysWOW64\hhmdterx\jgzopasf.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\c58c41fb9de90f13223980a5147fdf71.exe
"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hhmdterx\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jgzopasf.exe" C:\Windows\SysWOW64\hhmdterx\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hhmdterx binPath= "C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe /d\"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hhmdterx "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hhmdterx
C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe
C:\Windows\SysWOW64\hhmdterx\jgzopasf.exe /d"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.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 |
| RU | 176.111.174.19:443 | 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 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta6.am0.yahoodns.net | udp |
| US | 67.195.228.94:25 | mta6.am0.yahoodns.net | tcp |
| RU | 176.111.174.19:443 | tcp | |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 209.85.203.27:25 | smtp.google.com | tcp |
| RU | 176.111.174.19:443 | 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 |
| RU | 176.111.174.19:443 | tcp | |
| RU | 176.111.174.19:443 | tcp |
Files
memory/2884-3-0x00000000001B0000-0x00000000001C3000-memory.dmp
memory/2884-1-0x00000000002B0000-0x00000000003B0000-memory.dmp
memory/2884-4-0x0000000000400000-0x000000000099D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\jgzopasf.exe
| MD5 | 2529655477b4192aae0f3f034a999a0a |
| SHA1 | d6d6e8f5550d79995d6d5de6618c375a0aff57e5 |
| SHA256 | aff3d242ddc20be5b26dfb3d0ea4445bfca0fc67dd7a0c4dfc9f95b0aa7abcb6 |
| SHA512 | d2d5291c5578ed10278d3c60819e3753a7d2d7ba02650e9d25fd2b2f4842a9adcd573f56d7b3c2f0c43894b77564d80ef9fa11a83664b14992513e57de2d7fe5 |
memory/2884-8-0x0000000000400000-0x000000000099D000-memory.dmp
memory/2784-9-0x0000000000A80000-0x0000000000B80000-memory.dmp
memory/2700-13-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2700-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2784-15-0x0000000000400000-0x000000000099D000-memory.dmp
memory/2784-17-0x0000000000400000-0x000000000099D000-memory.dmp
memory/2700-18-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2700-10-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2700-19-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2700-20-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-13 09:41
Reported
2024-03-13 09:43
Platform
win10v2004-20240226-en
Max time kernel
149s
Max time network
151s
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\kpempfxh\ImagePath = "C:\\Windows\\SysWOW64\\kpempfxh\\doftbivs.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.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\kpempfxh\doftbivs.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3120 set thread context of 4532 | N/A | C:\Windows\SysWOW64\kpempfxh\doftbivs.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\c58c41fb9de90f13223980a5147fdf71.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\kpempfxh\doftbivs.exe |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe
"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kpempfxh\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\doftbivs.exe" C:\Windows\SysWOW64\kpempfxh\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kpempfxh binPath= "C:\Windows\SysWOW64\kpempfxh\doftbivs.exe /d\"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kpempfxh "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kpempfxh
C:\Windows\SysWOW64\kpempfxh\doftbivs.exe
C:\Windows\SysWOW64\kpempfxh\doftbivs.exe /d"C:\Users\Admin\AppData\Local\Temp\c58c41fb9de90f13223980a5147fdf71.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 1116 -ip 1116
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1116 -s 1028
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3120 -ip 3120
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3120 -s 524
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | microsoft.com | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | 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 | 52.101.42.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 133.250.112.20.in-addr.arpa | udp |
| RU | 176.111.174.19:443 | tcp | |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | 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 | 33.134.221.88.in-addr.arpa | udp |
| RU | 176.111.174.19:443 | tcp | |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 209.85.203.27:25 | smtp.google.com | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| RU | 176.111.174.19:443 | 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 | 178.223.142.52.in-addr.arpa | udp |
| RU | 176.111.174.19:443 | tcp | |
| 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 | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| RU | 176.111.174.19:443 | tcp | |
| US | 8.8.8.8:53 | 15.173.189.20.in-addr.arpa | udp |
Files
memory/1116-1-0x0000000000C70000-0x0000000000D70000-memory.dmp
memory/1116-2-0x0000000000C40000-0x0000000000C53000-memory.dmp
memory/1116-4-0x0000000000400000-0x000000000099D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\doftbivs.exe
| MD5 | ad4de3e5bdd83cedd504f1009e578c1f |
| SHA1 | 8a87a2bb98184280b2b23dd0be99e0c65368e6f2 |
| SHA256 | bd8a4bc43c392917f3f9707418acb402bd68ad9bf814d62480463472dde16138 |
| SHA512 | aea5a63870a4b24b973b41fca0e64829c3ffc1368bd678c7b73fa58d752451e639e349d5f644389cd8368eee68e58f5f90d49e6b83c9c802071fc7d23048010d |
memory/1116-8-0x0000000000400000-0x000000000099D000-memory.dmp
memory/1116-9-0x0000000000C40000-0x0000000000C53000-memory.dmp
memory/3120-10-0x0000000000B80000-0x0000000000C80000-memory.dmp
memory/3120-11-0x0000000000400000-0x000000000099D000-memory.dmp
memory/4532-12-0x0000000000740000-0x0000000000755000-memory.dmp
memory/4532-15-0x0000000000740000-0x0000000000755000-memory.dmp
memory/4532-16-0x0000000000740000-0x0000000000755000-memory.dmp
memory/3120-17-0x0000000000400000-0x000000000099D000-memory.dmp
memory/4532-18-0x0000000000740000-0x0000000000755000-memory.dmp