Analysis Overview
SHA256
7b911eda3edcb5cfc53b82f5aba8e50f87dc772728836424332c6c02ad3af6e7
Threat Level: Shows suspicious behavior
The file 2024-06-02_578186df7b810fe5809213537aaea468_bkransomware was found to be: Shows suspicious behavior.
Malicious Activity Summary
Reads user/profile data of web browsers
Executes dropped EXE
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
2024-06-02 01:04
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-02 01:04
Reported
2024-06-02 01:07
Platform
win7-20240508-en
Max time kernel
121s
Max time network
125s
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\2024-06-02_578186df7b810fe5809213537aaea468_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\2024-06-02_578186df7b810fe5809213537aaea468_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\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1732 wrote to memory of 2192 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1732 wrote to memory of 2192 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1732 wrote to memory of 2192 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1732 wrote to memory of 2192 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
C:\Windows\CTS.exe
| MD5 | f9d4ab0a726adc9b5e4b7d7b724912f1 |
| SHA1 | 3d42ca2098475924f70ee4a831c4f003b4682328 |
| SHA256 | b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc |
| SHA512 | 22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432 |
C:\Users\Admin\AppData\Local\Temp\62GaDFdiaTOpnBr.exe
| MD5 | 87ce87d6839d7329e641695f41ef2b1e |
| SHA1 | 198bab1842a2ed0f8152126ee9fd1d44d3b73fbc |
| SHA256 | 95ea9da33250d65c3adeb7b11346ce14354a6481a76f5971cb284c5653c73c81 |
| SHA512 | 2044eeae6add96663d6a1afa4130d8feca901c6a2267c33bcbb929a8db949e897817693ef9ca2cae0a009640bbfc087e68b3a39750cd5c5d8946a6aeb78a9338 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-02 01:04
Reported
2024-06-02 01:07
Platform
win10v2004-20240426-en
Max time kernel
150s
Max time network
153s
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\2024-06-02_578186df7b810fe5809213537aaea468_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:\Windows\CTS.exe | N/A |
| File created | C:\Windows\CTS.exe | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3588 wrote to memory of 4572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3588 wrote to memory of 4572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3588 wrote to memory of 4572 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_578186df7b810fe5809213537aaea468_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
Files
C:\Windows\CTS.exe
| MD5 | f9d4ab0a726adc9b5e4b7d7b724912f1 |
| SHA1 | 3d42ca2098475924f70ee4a831c4f003b4682328 |
| SHA256 | b43be87e8586ca5e995979883468f3b3d9dc5212fbfd0b5f3341a5b7c56e0fbc |
| SHA512 | 22a5f0e4b2716244e978ee50771823926f86baf0382ece48fd049f039cf77b5eb0691d83c61148903cff081fdbea969f47b8ed521647717f42bbed5c64552432 |
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | ee907f5a0476be7887d985bf0cef8f05 |
| SHA1 | e2fbae42d9c8494715e9d07a6624d6b105762ad4 |
| SHA256 | 6b6305b19882c457ac24735746b6fbe7c6699cd96016fc5dc58249d35d22b097 |
| SHA512 | 39f26f2ef7d017ce46ee2484f68d76334cdf2e2365026a4944d900134f113093c0bebc8e35a8412311a458034863c735124f04ab8894ddffcd550413ba051832 |
C:\Users\Admin\AppData\Local\Temp\V44oPYzHtw10PIy.exe
| MD5 | 9600074862b1d726778322e81220bcf5 |
| SHA1 | 12886b9a7038d51ba76248dc16740aa87f00a512 |
| SHA256 | 76b1a378d4fbfcd013dc6e900e099ee9222aae0cd159dec44121a02f361c8877 |
| SHA512 | 26c38037fa609c74772039319bec237798f067d4b0ddf7b9e125ab254f2f1d6c5a530ca8b3abe85826361aff3b3a68a227f4d3dae2ce6d9790cff09d71dd91ae |