Analysis Overview
SHA256
fd95c740f62347eac8babe5fc33e457a183016d029f80283e468cf7a07b3b210
Threat Level: Shows suspicious behavior
The file 2024-06-13_9585d68fcfb844900962273117de36c6_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 00:46
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 00:46
Reported
2024-06-13 00:49
Platform
win7-20240220-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\2024-06-13_9585d68fcfb844900962273117de36c6_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_9585d68fcfb844900962273117de36c6_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_9585d68fcfb844900962273117de36c6_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3028 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3028 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3028 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3028 wrote to memory of 2584 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_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\6ZRhtfZx7W0q8mf.exe
| MD5 | 28cfb149af9abf155740c96991c11a57 |
| SHA1 | f14e6450a12695768865f61a283128e993d6a9b8 |
| SHA256 | 7028b845c336704d335cef93f0055167c28a0b7e5dd253908ca6adbee57f3ca6 |
| SHA512 | b0bdd9534a19a87c265737ccc788a8ebf8cb875d0f386672ba00a967bfcad1f1b44ed9bbfb349448cfc572dd95c2c74ab9d3264bb955f6b2e8c1fac3f1d30a25 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 00:46
Reported
2024-06-13 00:49
Platform
win10v2004-20240508-en
Max time kernel
147s
Max time network
159s
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_9585d68fcfb844900962273117de36c6_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_9585d68fcfb844900962273117de36c6_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_9585d68fcfb844900962273117de36c6_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 556 wrote to memory of 1392 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
| PID 556 wrote to memory of 1392 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
| PID 556 wrote to memory of 1392 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_9585d68fcfb844900962273117de36c6_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 | 8d35c70890cedae260aa13de7df3d6fb |
| SHA1 | 5abd81744e4acef3ae1fcdfa97850f2336fff03e |
| SHA256 | 00f6fb98fa997a91d9950862cd62e8aacce6cef925d79acf469a58a41a4652a9 |
| SHA512 | e6c525d3f7c0234c0199b9a2023ecb57c779d95d4450f11ddfcc5dd3dde33eb85218f5b88edd53b4be40d8c71d8b8595097c6a8cbc641b4a5b9bc9521ceed5d5 |
C:\Users\Admin\AppData\Local\Temp\xXo2i5VuvKiqTyF.exe
| MD5 | 5462cc73e681a0bf44c824d23ee3cb1f |
| SHA1 | 0a86707ea941e137445eb2844733483c978c10ea |
| SHA256 | f52502aa8290e28d7fe2a535cf775d407648ef7845b7a50c02ed62682c9a0b1e |
| SHA512 | 247014bb35caefe927fe0a6fb135ee86aa67b947495729c3099d24c050f3cd5563d1c2c35507e8f914a4c9e8fd2c361b7a2373ae7cf434ec6331a9d086b43377 |