Analysis Overview
SHA256
4a5face1152fe18fd167e2f785857e0e4266997ff8d74285fa920bcb83523ca8
Threat Level: Known bad
The file vbojcjwr.exe was found to be: Known bad.
Malicious Activity Summary
Tofsee
Modifies Windows Firewall
Creates new service(s)
Sets service image path in registry
Executes dropped EXE
Deletes itself
Checks computer location settings
Drops file in System32 directory
Suspicious use of SetThreadContext
Launches sc.exe
Program crash
Unsigned PE
Enumerates physical storage devices
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-03 07:21
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-03 07:21
Reported
2024-09-03 07:22
Platform
win7-20240729-en
Max time kernel
44s
Max time network
44s
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\iimzeqaf\ImagePath = "C:\\Windows\\SysWOW64\\iimzeqaf\\rkhpgztq.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\iimzeqaf\rkhpgztq.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\config\systemprofile:.repos | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3064 set thread context of 2612 | N/A | C:\Windows\SysWOW64\iimzeqaf\rkhpgztq.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\vbojcjwr.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\iimzeqaf\rkhpgztq.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\svchost.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Control Panel\Buses | C:\Windows\SysWOW64\svchost.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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 | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe
"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iimzeqaf\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rkhpgztq.exe" C:\Windows\SysWOW64\iimzeqaf\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create iimzeqaf binPath= "C:\Windows\SysWOW64\iimzeqaf\rkhpgztq.exe /d\"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description iimzeqaf "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start iimzeqaf
C:\Windows\SysWOW64\iimzeqaf\rkhpgztq.exe
C:\Windows\SysWOW64\iimzeqaf\rkhpgztq.exe /d"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.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 | 52.101.8.49:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 67.195.228.106:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | jotunheim.name | udp |
| RU | 80.66.75.11:443 | jotunheim.name | tcp |
| US | 8.8.8.8:53 | google.com | udp |
| US | 8.8.8.8:53 | smtp.google.com | udp |
| IE | 172.253.116.26:25 | smtp.google.com | tcp |
Files
memory/2096-1-0x00000000004E0000-0x00000000005E0000-memory.dmp
memory/2096-2-0x00000000002B0000-0x00000000002C3000-memory.dmp
memory/2096-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\rkhpgztq.exe
| MD5 | fcb840ab23e8d29477f54e748bc76e52 |
| SHA1 | 4b58d25d852392ff4405a854e7a1454a2b1e665a |
| SHA256 | 97e7e8c6d89c67997530f7af774b53d385b7e2dd4542e58d0840b92f75ef32a4 |
| SHA512 | a3e8c3bce75474e605c2112e6a5e5be7d7fd4e1eee825d893f1a2bbceefe6b55e6f2bbb0fcdd4f8c8e3439f9e0d10e9b0382c3fc042130d34ff37899170b6c4c |
memory/2096-7-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2096-9-0x0000000000400000-0x0000000000415000-memory.dmp
memory/2096-8-0x00000000002B0000-0x00000000002C3000-memory.dmp
memory/3064-17-0x0000000000400000-0x000000000045A000-memory.dmp
memory/2612-16-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2612-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2612-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2612-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2612-18-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-03 07:21
Reported
2024-09-03 07:22
Platform
win10v2004-20240802-en
Max time kernel
45s
Max time network
48s
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\kvfihnwa\ImagePath = "C:\\Windows\\SysWOW64\\kvfihnwa\\syqfkdu.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\vbojcjwr.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\kvfihnwa\syqfkdu.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\config\systemprofile:.repos | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4880 set thread context of 4440 | N/A | C:\Windows\SysWOW64\kvfihnwa\syqfkdu.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\vbojcjwr.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\vbojcjwr.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\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\svchost.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Control Panel\Buses | C:\Windows\SysWOW64\svchost.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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 | C:\Windows\SysWOW64\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe
"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kvfihnwa\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\syqfkdu.exe" C:\Windows\SysWOW64\kvfihnwa\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kvfihnwa binPath= "C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe /d\"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kvfihnwa "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kvfihnwa
C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe
C:\Windows\SysWOW64\kvfihnwa\syqfkdu.exe /d"C:\Users\Admin\AppData\Local\Temp\vbojcjwr.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 4004 -ip 4004
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4004 -s 1308
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4880 -ip 4880
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4880 -s 516
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.160.190.20.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 |
| AU | 20.70.246.20:80 | 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 | 52.101.11.0:25 | microsoft-com.mail.protection.outlook.com | tcp |
| US | 8.8.8.8:53 | 20.246.70.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | yahoo.com | udp |
| US | 8.8.8.8:53 | mta7.am0.yahoodns.net | udp |
| US | 98.136.96.74:25 | mta7.am0.yahoodns.net | tcp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | svartalfheim.top | udp |
| US | 8.8.8.8:53 | jotunheim.name | udp |
| RU | 80.66.75.11:443 | jotunheim.name | tcp |
| US | 8.8.8.8:53 | 11.75.66.80.in-addr.arpa | udp |
| 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 |
Files
memory/4004-1-0x00000000005F0000-0x00000000006F0000-memory.dmp
memory/4004-2-0x00000000021A0000-0x00000000021B3000-memory.dmp
memory/4004-3-0x0000000000400000-0x0000000000415000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\syqfkdu.exe
| MD5 | 94711e204022fa34c4c57ae8079682c0 |
| SHA1 | fe18f18b725ec9fb4f8e7cd747cfe5e2f2343ae1 |
| SHA256 | 693e327601fe6c76e8ded1021f09f651ac96eeb9d966f477da8f25a995cf4fbe |
| SHA512 | 5e133a021fe6e6c40f6e1c9e05fc3d350ede0525f51f61c2efbe6d89a8423a903c647399fad988cca8e281c2d3b54d77ba53d5378ccb374dcd41b8f391891f4a |
memory/4880-9-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4880-8-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4440-11-0x0000000000B70000-0x0000000000B85000-memory.dmp
memory/4880-10-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4004-14-0x00000000021A0000-0x00000000021B3000-memory.dmp
memory/4004-15-0x0000000000400000-0x0000000000415000-memory.dmp
memory/4004-13-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4880-17-0x0000000000400000-0x000000000045A000-memory.dmp
memory/4440-18-0x0000000000B70000-0x0000000000B85000-memory.dmp
memory/4440-19-0x0000000000B70000-0x0000000000B85000-memory.dmp