Analysis Overview
SHA256
760e559a3535b27d012b29e4c44767e7261e7a29f45b78189196d85b25876b5e
Threat Level: Known bad
The file Cotizaciones.jar was found to be: Known bad.
Malicious Activity Summary
STRRAT
Drops startup file
Adds Run key to start application
Drops file in System32 directory
Checks processor information in registry
Enumerates system info in registry
Uses Task Scheduler COM API
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-07-06 05:45
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2023-07-06 05:45
Reported
2023-07-06 05:47
Platform
win10v2004-20230703-en
Max time kernel
145s
Max time network
152s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Cotizaciones.jar | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cotizaciones = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Cotizaciones.jar\"" | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cotizaciones = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Cotizaciones.jar\"" | C:\ProgramData\Oracle\Java\javapath\java.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{3A4E4E29-20CA-4616-8E52-90359A7C4073}.catalogItem | C:\Windows\System32\svchost.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\System32\svchost.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\System32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\System32\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4816 wrote to memory of 2688 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 4816 wrote to memory of 2688 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Windows\SYSTEM32\cmd.exe |
| PID 4816 wrote to memory of 5016 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 4816 wrote to memory of 5016 | N/A | C:\ProgramData\Oracle\Java\javapath\java.exe | C:\Program Files\Java\jre1.8.0_66\bin\java.exe |
| PID 2688 wrote to memory of 2372 | N/A | C:\Windows\SYSTEM32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2688 wrote to memory of 2372 | N/A | C:\Windows\SYSTEM32\cmd.exe | C:\Windows\system32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Cotizaciones.jar
C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | elastsolek1.duckdns.org | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | zekeriyasolek45.duckdns.org | udp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 126.129.241.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 254.111.26.67.in-addr.arpa | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| US | 8.8.8.8:53 | zekeriyasolek45.duckdns.org | udp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| US | 8.8.8.8:53 | elastsolek1.duckdns.org | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| US | 8.8.8.8:53 | 3.173.189.20.in-addr.arpa | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
Files
memory/4816-143-0x0000000000DB0000-0x0000000000DB1000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Cotizaciones.jar
| MD5 | 70a0aefb832e99006ed06844554ff498 |
| SHA1 | eefeee9919557f65474c7c01d11f900aba1c0f31 |
| SHA256 | 760e559a3535b27d012b29e4c44767e7261e7a29f45b78189196d85b25876b5e |
| SHA512 | 8adfa7e91e312cfcaef15e7da66fee7a3a19a8054ff813432702fc5cf29c60c634e8127e41c6a5ad0d8530f58ba9fc01cf6d403bf1456b7e9d498f766aa2c3c8 |
C:\Users\Admin\AppData\Roaming\Cotizaciones.jar
| MD5 | 70a0aefb832e99006ed06844554ff498 |
| SHA1 | eefeee9919557f65474c7c01d11f900aba1c0f31 |
| SHA256 | 760e559a3535b27d012b29e4c44767e7261e7a29f45b78189196d85b25876b5e |
| SHA512 | 8adfa7e91e312cfcaef15e7da66fee7a3a19a8054ff813432702fc5cf29c60c634e8127e41c6a5ad0d8530f58ba9fc01cf6d403bf1456b7e9d498f766aa2c3c8 |
C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
| MD5 | 9a6aba2b144c3cfc7d820da5c8cfc8a9 |
| SHA1 | 8c8fb35d439af1cd843c1a3581256d5c9bcc0299 |
| SHA256 | e7b5056b395946d6dc8e74155d9fb2ba6d0f2133554a1448e96d47b94e3e5a9c |
| SHA512 | 783d84f2149cdbde79eb40cad25be9491430e73a69caa1c33bf02fe094b5dd823b175cc868c1f627df0bc788f933ed1f3c55a982072894e06b540dfcb392ff7f |
memory/5016-164-0x0000000001360000-0x0000000001361000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-07-06 05:45
Reported
2023-07-06 05:47
Platform
win7-20230703-en
Max time kernel
149s
Max time network
154s
Command Line
Signatures
STRRAT
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Cotizaciones.jar | C:\Windows\system32\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-719110999-4061093145-1944564496-1000\Software\Microsoft\Windows\CurrentVersion\Run\Cotizaciones = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Cotizaciones.jar\"" | C:\Windows\system32\java.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cotizaciones = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Cotizaciones.jar\"" | C:\Windows\system32\java.exe | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1352 wrote to memory of 2312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1352 wrote to memory of 2312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1352 wrote to memory of 2312 | N/A | C:\Windows\system32\java.exe | C:\Windows\system32\cmd.exe |
| PID 1352 wrote to memory of 2120 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1352 wrote to memory of 2120 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 1352 wrote to memory of 2120 | N/A | C:\Windows\system32\java.exe | C:\Program Files\Java\jre7\bin\java.exe |
| PID 2312 wrote to memory of 3048 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2312 wrote to memory of 3048 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
| PID 2312 wrote to memory of 3048 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Cotizaciones.jar
C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Cotizaciones.jar"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | elastsolek1.duckdns.org | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| US | 8.8.8.8:53 | zekeriyasolek45.duckdns.org | udp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| US | 8.8.8.8:53 | elastsolek1.duckdns.org | udp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| US | 8.8.8.8:53 | zekeriyasolek45.duckdns.org | udp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
| RU | 194.147.140.212:4787 | zekeriyasolek45.duckdns.org | tcp |
| NL | 103.212.81.157:4787 | elastsolek1.duckdns.org | tcp |
Files
memory/1352-63-0x0000000000130000-0x0000000000131000-memory.dmp
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Cotizaciones.jar
| MD5 | 70a0aefb832e99006ed06844554ff498 |
| SHA1 | eefeee9919557f65474c7c01d11f900aba1c0f31 |
| SHA256 | 760e559a3535b27d012b29e4c44767e7261e7a29f45b78189196d85b25876b5e |
| SHA512 | 8adfa7e91e312cfcaef15e7da66fee7a3a19a8054ff813432702fc5cf29c60c634e8127e41c6a5ad0d8530f58ba9fc01cf6d403bf1456b7e9d498f766aa2c3c8 |
C:\Users\Admin\AppData\Roaming\Cotizaciones.jar
| MD5 | 70a0aefb832e99006ed06844554ff498 |
| SHA1 | eefeee9919557f65474c7c01d11f900aba1c0f31 |
| SHA256 | 760e559a3535b27d012b29e4c44767e7261e7a29f45b78189196d85b25876b5e |
| SHA512 | 8adfa7e91e312cfcaef15e7da66fee7a3a19a8054ff813432702fc5cf29c60c634e8127e41c6a5ad0d8530f58ba9fc01cf6d403bf1456b7e9d498f766aa2c3c8 |
memory/2120-80-0x0000000000130000-0x0000000000131000-memory.dmp