Analysis Overview
SHA256
ebce197b826e30c0206f28e62edfef1d624cd290345d229812b4377396020b6a
Threat Level: Shows suspicious behavior
The file 2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware was found to be: Shows suspicious behavior.
Malicious Activity Summary
Executes dropped EXE
Reads user/profile data of web browsers
Adds Run key to start application
Drops file in Windows directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-13 03:52
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 03:52
Reported
2024-06-13 03:55
Platform
win7-20240221-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Reads user/profile data of web browsers
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\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.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\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | N/A |
| File created | C:\Windows\CTS.exe | C:\Windows\CTS.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1632 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1632 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1632 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1632 wrote to memory of 2744 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
C:\Windows\CTS.exe
| MD5 | 66df4ffab62e674af2e75b163563fc0b |
| SHA1 | dec8a197312e41eeb3cfef01cb2a443f0205cd6e |
| SHA256 | 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163 |
| SHA512 | 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25 |
C:\Users\Admin\AppData\Local\Temp\DX6NVYHW6VcX9vY.exe
| MD5 | cc004b9079f965679a078e477f3e6627 |
| SHA1 | ee2c04a1cb8b2081920420fd816f7a50e6b9d160 |
| SHA256 | fdd347a2626a159e61255be450bd8f7e35d323b3e88f8042b5277c25c5c568fd |
| SHA512 | b5b37e6578d60d0813dcc1c725fa773f5571efbefe75b0e4111d7e7d4addaa18fa43b5377b2f4f7d07e978a97685733a884a88d01fab51bff3116c37a7bf0f11 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 03:52
Reported
2024-06-13 03:55
Platform
win10v2004-20240611-en
Max time kernel
148s
Max time network
152s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Reads user/profile data of web browsers
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\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.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\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | N/A |
| File created | C:\Windows\CTS.exe | C:\Windows\CTS.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3912 wrote to memory of 3780 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3912 wrote to memory of 3780 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3912 wrote to memory of 3780 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_e3e22c3ade7b7fba3affee9afd606415_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.73.42.20.in-addr.arpa | udp |
Files
C:\Windows\CTS.exe
| MD5 | 66df4ffab62e674af2e75b163563fc0b |
| SHA1 | dec8a197312e41eeb3cfef01cb2a443f0205cd6e |
| SHA256 | 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163 |
| SHA512 | 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25 |
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | 1b0fdfeea83ad199b45aea68c657656c |
| SHA1 | 346461d6bcb6887c14c4a7648e403fe365b25a6e |
| SHA256 | 4bf9fc6dc903d8b3c0d7d3a742a9e3f0171c201b6b8bab62072becbf0a7df597 |
| SHA512 | 1f2577ae9e559eefcbe8cb05a6904ae00cc74ec86bfb8b8ba6ad3befa7f2d34771b1d79e397067d4c2391acff82501427b8b4c32672215c1f3156e219b7c9fc8 |
C:\Users\Admin\AppData\Local\Temp\Hur0bPoAAGhsCU5.exe
| MD5 | 436b9ecaa9855d2ffe3d40ed46b9e35c |
| SHA1 | 5067bd2a34093b6f268f902c1e62b7a7cb70870e |
| SHA256 | 7880c230030dd4df4df98bee91ef44cfac8a3176fb9d8ede08b53f60634f49ac |
| SHA512 | 16ef627cd3191f700cd03fc89ee4bc4216c8c18a017e8008b3b0ac77de15f85dce92f958edb249706eef6f62d6ef9f6f509366fd219fedc489cc946a16dc9967 |