Analysis Overview
SHA256
877b7a3b09c2ac8be387e08e18e761a5ef77dfcf570ad8a742bb9f6b9cc5031e
Threat Level: Shows suspicious behavior
The file 2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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
2024-06-11 18:00
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-11 18:00
Reported
2024-06-11 18:02
Platform
win7-20231129-en
Max time kernel
122s
Max time network
123s
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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3048 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3048 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3048 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3048 wrote to memory of 1708 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\xrz1in8MJJLxcpo.exe
| MD5 | b17237106e3e61287a8b931c53ad0b36 |
| SHA1 | bf69f602c2d9fe7517d60338beccfdeb9cd82cf3 |
| SHA256 | ad170810dc362014ac822986695143432b99a5a001711bc4466426f9b8288d6b |
| SHA512 | 50fb40e96b1ad8ae349cf550d3bf5693c595081d6f22a27528845dcd3ff6051fe20ffaad04781edaf65a0b1b2c6a43af8b09c2e142e01325f088fa708126fe54 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-11 18:00
Reported
2024-06-11 18:02
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
52s
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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1920 wrote to memory of 4444 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1920 wrote to memory of 4444 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1920 wrote to memory of 4444 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_88af66a07ddc2cdf772ce0806f196e0c_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\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | 8160a200297e7a390d8af933af0b9e33 |
| SHA1 | e729a70544d3eaa2e4f91961fd60cd4267be21c0 |
| SHA256 | 9a9cd82e73cafc13b0101a6f043198fb0b809d92b0d34e54e3e29f89c621777a |
| SHA512 | 443f0d876abf3d0b0159732934323fbfbc7a1c87042033c793b68a192580c2d716234ef87610843c5e76adca60058861234c3ec95259e959be6cc4b5174006fc |
C:\Users\Admin\AppData\Local\Temp\XqXc1i1RwaffjiH.exe
| MD5 | c6982a4f5884324356f7d4260c5f3e8f |
| SHA1 | 9a1d0656f0ebe40caaeb2829ef9c3cae1e9415dd |
| SHA256 | 728be988ee90bfc1ac3a03afa7807d1bbefa7a74dc4dc12be42bf60297c9e8b7 |
| SHA512 | 852d6845c45c76303a27d5f855bb7f8d3227a61c2d5cddd11ffc4ce029909c3e78baec0f0e2cb974f7789fb5ce43b69be082925958f672726417cff5716e9384 |