Analysis Overview
SHA256
4043c471bb101ba5705f35adce9a06603af390b5596fe3a338d5a36e7bd845b8
Threat Level: Known bad
The file c4c585bbf04113bba793972a6825bcf7 was found to be: Known bad.
Malicious Activity Summary
Windows security bypass
Tofsee
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
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-13 02:42
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-13 02:42
Reported
2024-03-13 02:46
Platform
win7-20240221-en
Max time kernel
179s
Max time network
197s
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\kcpnoqr = "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\kcpnoqr\ImagePath = "C:\\Windows\\SysWOW64\\kcpnoqr\\bbytwnew.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\kcpnoqr\bbytwnew.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2720 set thread context of 1848 | N/A | C:\Windows\SysWOW64\kcpnoqr\bbytwnew.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\c4c585bbf04113bba793972a6825bcf7.exe
"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kcpnoqr\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bbytwnew.exe" C:\Windows\SysWOW64\kcpnoqr\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kcpnoqr binPath= "C:\Windows\SysWOW64\kcpnoqr\bbytwnew.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kcpnoqr "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kcpnoqr
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\kcpnoqr\bbytwnew.exe
C:\Windows\SysWOW64\kcpnoqr\bbytwnew.exe /d"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe"
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 | 52.101.11.0:25 | 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 |
| IE | 209.85.202.27:25 | 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/1740-1-0x00000000032F0000-0x00000000033F0000-memory.dmp
memory/1740-2-0x0000000000220000-0x0000000000233000-memory.dmp
memory/1740-4-0x0000000000400000-0x000000000324C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\bbytwnew.exe
| MD5 | ae92f36000f8fcc03cfb97d696307c37 |
| SHA1 | 3927115840ae828ef70587266d037e94129ff81e |
| SHA256 | 1ecea14da1ee535f5f099727671737789cf99cef02197fdc70f12ca31340609f |
| SHA512 | 5f43274a243e846b2f18c9fdcb16fb1a1cd595a16c546d960de0bf044b5d8946270d876a692e1642c29bd73e91d07b274e8a9421de74359f8b29eb10d507cc51 |
memory/1740-6-0x0000000000400000-0x000000000324C000-memory.dmp
memory/1740-7-0x0000000000220000-0x0000000000233000-memory.dmp
C:\Windows\SysWOW64\kcpnoqr\bbytwnew.exe
| MD5 | bf3eb5cf46c71ba25e1863d13e5235e7 |
| SHA1 | 9c2090cea575379b3912254f313ba5c6254bdd25 |
| SHA256 | 5d88988d775486b01d339fda6659f17cdf604fc0cb7b8cc61ccacb83ef956ba6 |
| SHA512 | b37ee2113e5b1acaec5770311408f2e6f4039ea1d99fe387bffe9c6bc51b9c9af2427512f754e6be348d306a66265746b1ae11aad7b8ef47f56f2c236b9a72d3 |
memory/2720-10-0x00000000033D0000-0x00000000034D0000-memory.dmp
memory/1848-11-0x0000000000080000-0x0000000000095000-memory.dmp
memory/1848-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/1848-14-0x0000000000080000-0x0000000000095000-memory.dmp
memory/1848-17-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2720-19-0x0000000000400000-0x000000000324C000-memory.dmp
memory/1848-20-0x0000000000080000-0x0000000000095000-memory.dmp
memory/2720-18-0x0000000000400000-0x000000000324C000-memory.dmp
memory/1848-21-0x0000000000080000-0x0000000000095000-memory.dmp
memory/1848-22-0x0000000000080000-0x0000000000095000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-13 02:42
Reported
2024-03-13 02:45
Platform
win10v2004-20240226-en
Max time kernel
139s
Max time network
154s
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 |
| N/A | N/A | C:\Windows\SysWOW64\netsh.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
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 |
| 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
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" | C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe
"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qoikmqkg\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ttmzlihj.exe" C:\Windows\SysWOW64\qoikmqkg\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create qoikmqkg binPath= "C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe /d\"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description qoikmqkg "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start qoikmqkg
C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe
C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe /d"C:\Users\Admin\AppData\Local\Temp\c4c585bbf04113bba793972a6825bcf7.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\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zxrtvztp\
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Windows\TEMP\ezjmallt.exe" C:\Windows\SysWOW64\zxrtvztp\
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zxrtvztp binPath= "C:\Windows\SysWOW64\zxrtvztp\ezjmallt.exe /d\"C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe\"" type= own start= auto DisplayName= "wifi support"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zxrtvztp "wifi internet conection"
C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zxrtvztp
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
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | 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 | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.117.168.52.in-addr.arpa | udp |
Files
memory/3680-1-0x0000000003270000-0x0000000003370000-memory.dmp
memory/3680-2-0x0000000004E60000-0x0000000004E73000-memory.dmp
memory/3680-4-0x0000000000400000-0x000000000324C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\ttmzlihj.exe
| MD5 | e6ba87931a8b48ea21c9de63148e0c34 |
| SHA1 | 7b3c2924c7a6844236588e04bb3c356a86a37090 |
| SHA256 | b5e9cbbcb64c8265daaae5847370bf8cdf52b79f0bba79e67381c665b7bb34e2 |
| SHA512 | 4375eab81c6c8263730dca1419943a93acaca1b66c5b47269fe6da2d0f43306727952b2a29ca4b7e3bd08f60d5b31541f59e0acba7d4a520f4507ee847ab4ba2 |
C:\Windows\SysWOW64\qoikmqkg\ttmzlihj.exe
| MD5 | e9f3e1078d58eaaa10d36e6af2374da2 |
| SHA1 | 87ac6bce1608738eb787bf24bfbfd8054eb19244 |
| SHA256 | 80062b97df8b2438334fe2e6a3eed0ca89c5b349675b920aaaca1712b1499a5e |
| SHA512 | d7ef67cedb11a2af4061ee41c8dd43a1b287f30812b234c0e3ba27d2d9850127a0e1dc45e97dab1a334cbe4686d26d5d3b47fa6b7e1c45c1e1e82cce3326db4d |
memory/3680-7-0x0000000000400000-0x000000000324C000-memory.dmp
memory/3680-9-0x0000000004E60000-0x0000000004E73000-memory.dmp
memory/3208-10-0x0000000003410000-0x0000000003510000-memory.dmp
memory/3208-12-0x0000000000400000-0x000000000324C000-memory.dmp
C:\Windows\TEMP\ezjmallt.exe
| MD5 | 5ded3ce880f7f2b00f08abee23316eff |
| SHA1 | 8db925f036c0181754111cb9d51f512c0fc9b2dc |
| SHA256 | ec400c6f4afe3ce0cd22ac7b165ef59fdfa947a63025b4a7e8bc2fd87d96a6ab |
| SHA512 | 704b8e22c5a61c63e09d84f3d7877e9d2e8d84a9947e11ad9cfd3e0e739c479c1cba48b9faaccca2ff517fe701ddb494d1d6eaf5204621e1db125733893d4c8b |
memory/3208-14-0x0000000000400000-0x000000000324C000-memory.dmp