Analysis Overview
SHA256
9099bbe761df281236d333dc2827f8101ff42236e2af32e87f60c9e1e6b8067e
Threat Level: Shows suspicious behavior
The file b252f36350548b10cd4a73ed9f681ec5 was found to be: Shows suspicious behavior.
Malicious Activity Summary
Reads user/profile data of web browsers
UPX packed file
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Drops file in Windows directory
Unsigned PE
Enumerates system info in registry
Suspicious use of WriteProcessMemory
Suspicious behavior: GetForegroundWindowSpam
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-04 14:08
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-04 14:08
Reported
2024-03-04 14:11
Platform
win10v2004-20240226-en
Max time kernel
148s
Max time network
150s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exe | N/A |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Reads user/profile data of web browsers
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" | C:\Windows\CTS.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\CTS.exe | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| File created | C:\Windows\CTS.exe | C:\Windows\CTS.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe
"C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe"
C:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exe
C:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 820
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 16.53.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.178.17.96.in-addr.arpa | udp |
Files
memory/4500-0-0x0000000000710000-0x0000000000727000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\2lhGnVhkZIbuFyP.exe
| MD5 | e115521ba14b75f53dcdff087ec6898f |
| SHA1 | 87103a892bb514a93d485fba221bacb9da3aae25 |
| SHA256 | 59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29 |
| SHA512 | ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a |
C:\Windows\CTS.exe
| MD5 | 70aa23c9229741a9b52e5ce388a883ac |
| SHA1 | b42683e21e13de3f71db26635954d992ebe7119e |
| SHA256 | 9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2 |
| SHA512 | be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5 |
memory/4500-8-0x0000000000710000-0x0000000000727000-memory.dmp
memory/4908-9-0x00000000003A0000-0x00000000003B7000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | 90eec7434f905289ae71e424907398d0 |
| SHA1 | f55a4c4f4de702c4859de4146eae1b20eba3a7dc |
| SHA256 | 37fea280ac04caa4edd0eaa45412c6b471950186248f02e858b2be822db49857 |
| SHA512 | 0ddfe9f8a039ec3ff7ff83c29b2764f8d9c35335b13e20559817a544e28cedc7def6929a9003e7d44b79697d96a970bcd8a01e31bf35c5201a4297f771816073 |
memory/400-27-0x00007FF8ECE90000-0x00007FF8ED831000-memory.dmp
memory/400-28-0x00007FF8ECE90000-0x00007FF8ED831000-memory.dmp
memory/400-30-0x0000000000E60000-0x0000000000E70000-memory.dmp
memory/400-40-0x00007FF8ECE90000-0x00007FF8ED831000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-04 14:08
Reported
2024-03-04 14:11
Platform
win7-20240221-en
Max time kernel
142s
Max time network
123s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\SLlvfLdMc6FBvZA.exe | N/A |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
Reads user/profile data of web browsers
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe" | C:\Windows\CTS.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\CTS.exe | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| File created | C:\Windows\CTS.exe | C:\Windows\CTS.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe
"C:\Users\Admin\AppData\Local\Temp\b252f36350548b10cd4a73ed9f681ec5.exe"
C:\Users\Admin\AppData\Local\Temp\SLlvfLdMc6FBvZA.exe
C:\Users\Admin\AppData\Local\Temp\SLlvfLdMc6FBvZA.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
dw20.exe -x -s 380
Network
Files
memory/2272-0-0x0000000000D50000-0x0000000000D67000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\SLlvfLdMc6FBvZA.exe
| MD5 | e115521ba14b75f53dcdff087ec6898f |
| SHA1 | 87103a892bb514a93d485fba221bacb9da3aae25 |
| SHA256 | 59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29 |
| SHA512 | ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a |
memory/2272-10-0x0000000000D50000-0x0000000000D67000-memory.dmp
C:\Windows\CTS.exe
| MD5 | 70aa23c9229741a9b52e5ce388a883ac |
| SHA1 | b42683e21e13de3f71db26635954d992ebe7119e |
| SHA256 | 9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2 |
| SHA512 | be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5 |
memory/2272-11-0x0000000000B50000-0x0000000000B67000-memory.dmp
memory/2920-14-0x0000000000B50000-0x0000000000B67000-memory.dmp
memory/2708-17-0x000007FEF4AB0000-0x000007FEF544D000-memory.dmp
memory/2708-18-0x0000000000C10000-0x0000000000C90000-memory.dmp
memory/2540-19-0x0000000000640000-0x0000000000641000-memory.dmp
memory/2708-22-0x000007FEF4AB0000-0x000007FEF544D000-memory.dmp
memory/2708-23-0x0000000000C10000-0x0000000000C90000-memory.dmp