Analysis Overview
SHA256
e9d4a0307838e6b5ac8e50a0fa0624befc513c92a7c9330a1171cea6f10f580a
Threat Level: Shows suspicious behavior
The file 2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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
2024-06-12 14:49
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-12 14:49
Reported
2024-06-12 14:51
Platform
win7-20240508-en
Max time kernel
121s
Max time network
122s
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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2060 wrote to memory of 2216 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2060 wrote to memory of 2216 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2060 wrote to memory of 2216 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2060 wrote to memory of 2216 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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\DtLJWzcMyadjgna.exe
| MD5 | 4fe9a3bb39a01f0af77ebe99f71fa966 |
| SHA1 | bd5c36f54cadbf115cc626b94dc5330e41380ef1 |
| SHA256 | e68d9d604b3ebbb5892fbaf8368f77faef069fce0e51dd345853c3fbbd2edac6 |
| SHA512 | 862282ed723abcca367628a90861ac9fb49122cfbc3bcaf1f322dbb8b4a6cd0faf75d045ee9b46127b2ca164f944b30e774ffa6f3aee8ebb6780068b88116110 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-12 14:49
Reported
2024-06-12 14:51
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
51s
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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_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\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4588 wrote to memory of 468 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
| PID 4588 wrote to memory of 468 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
| PID 4588 wrote to memory of 468 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_ae7c77471de7d46862e8c38e1fcbe924_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.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 | 026d3a83210eef774fb58c5102fd0ebc |
| SHA1 | 9698113ed1c313c2fad3c6739cb7a9c0bea52ef7 |
| SHA256 | db492123fb59ea45e15aeb88fc410be9ed38af06c9e955272ff0c76cf09bd48e |
| SHA512 | cc24ca082d851ccd097462994a3fffd3c3cf439884401c97dbf5654e1e3eb5e0b37356428713b07d9e6471b4a4e503e67522aa85f709a538168ed1ab39bbbb55 |
C:\Users\Admin\AppData\Local\Temp\9RWcVUWq2Ds33td.exe
| MD5 | c3699b71eaedc0fb16155f2227ff5764 |
| SHA1 | 694b9a44f764438413519b6694c1ac50b0715a90 |
| SHA256 | a4356a87279462e2645d27ffd4c328ff01b977eeb7a0536217b611a887a06c85 |
| SHA512 | 0b1fe71509664b949400a4e76f2004eccaa3d37d7cf5de3bfa6f238f89793c3ea7e60196120a46518976918d84700b3717bb1f493c825da90530439810cca2e8 |