Analysis Overview
SHA256
e101f7550db0f220224e846a6a14da87450d2e401af676dc98c45aaf1cb22404
Threat Level: Shows suspicious behavior
The file 2024-06-13_9a9168e5de25fc2ff66702805cb63db4_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 03:45
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 03:45
Reported
2024-06-13 03:48
Platform
win7-20240508-en
Max time kernel
119s
Max time network
120s
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_9a9168e5de25fc2ff66702805cb63db4_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_9a9168e5de25fc2ff66702805cb63db4_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_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1868 wrote to memory of 2160 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1868 wrote to memory of 2160 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1868 wrote to memory of 2160 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1868 wrote to memory of 2160 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_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\mObfcWnqn7Aixh5.exe
| MD5 | fecc3dfb533d92e662f8f45fa8257b7a |
| SHA1 | f1deeebbc0d4b3a0a904f20bb0bee2492e0ea4d9 |
| SHA256 | a1896e93895f2c7857136bdb2d3ca384095bdda82be4ac81d52463ac6986beaa |
| SHA512 | 405bb7e2de5a36a6c7838ea8733ceac39007e6b3f1d9f57c71824002981e81a05c4fc78fb6e7b6f70a97b88a52ae062a2faa469211d0650e3b8e322eeae7b81a |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 03:45
Reported
2024-06-13 03:48
Platform
win10v2004-20240611-en
Max time kernel
93s
Max time network
99s
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_9a9168e5de25fc2ff66702805cb63db4_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_9a9168e5de25fc2ff66702805cb63db4_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_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3000 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3000 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3000 wrote to memory of 220 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_9a9168e5de25fc2ff66702805cb63db4_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 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 144.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.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 | 588378ecff439c4526c7e4c52c08ef9a |
| SHA1 | 7c07db303e1b9a752f89b4d5d66ee199ddc27b41 |
| SHA256 | 1433f659bae2a21a46f4c15c72d38c5158668ef90e838eabe01545d36edbfc11 |
| SHA512 | 95d58898236bb3803766762c246f160a7a81703f7a30c661a29a10a7a2f5127c6da8393f0eda964ba82527dc19d6413535f515091ee5717b200b9f06247cfd59 |
C:\Users\Admin\AppData\Local\Temp\o59F1Hlo5AJliII.exe
| MD5 | b675ec69f7f2680f089b5322df4af297 |
| SHA1 | 14966fce605fb22d9e335066be00791f8ac7fb3c |
| SHA256 | 492897401b2144711f7f6539e3165acde52912029c51520bb243c21274a4617d |
| SHA512 | 16284705a8d6d33232c804a3290fbde565b89044d5e56d00ed165ae22352d304d3228871e263d6b91e5a0aac226f57cf3da794ebf7dfcf218a6a9e21326ea3ed |