Analysis Overview
SHA256
e81a2a29df897a30fafc879a18fb42f8a2019d7d5daf41925ee1920002d812a9
Threat Level: Shows suspicious behavior
The file 2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware was found to be: Shows suspicious behavior.
Malicious Activity Summary
Loads dropped DLL
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
2024-06-12 14:39
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-12 14:39
Reported
2024-06-12 14:42
Platform
win7-20240221-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\13X2Bql5vwqldKF.exe | N/A |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
| N/A | N/A | N/A | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | N/A |
| N/A | N/A | N/A | 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_5567ea406c6fd92642f2ad36d755e768_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_5567ea406c6fd92642f2ad36d755e768_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_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe"
C:\Users\Admin\AppData\Local\Temp\13X2Bql5vwqldKF.exe
C:\Users\Admin\AppData\Local\Temp\13X2Bql5vwqldKF.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
C:\Users\Admin\AppData\Local\Temp\13X2Bql5vwqldKF.exe
| MD5 | abbd49c180a2f8703f6306d6fa731fdc |
| SHA1 | d63f4bfe7f74936b2fbace803e3da6103fbf6586 |
| SHA256 | 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1 |
| SHA512 | 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9 |
C:\Windows\CTS.exe
| MD5 | 66df4ffab62e674af2e75b163563fc0b |
| SHA1 | dec8a197312e41eeb3cfef01cb2a443f0205cd6e |
| SHA256 | 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163 |
| SHA512 | 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25 |
memory/2356-15-0x0000000000400000-0x000000000040D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\13X2Bql5vwqldKF.exe
| MD5 | ce6070b92cc1191c05b8b44422efa440 |
| SHA1 | 7e5e5e52e15117eb4c90481a7e6479f81cf36f1b |
| SHA256 | b88dc9ff79441829d3aa746aee09af779255d17c7e52f3d265dc5ebcf5285a21 |
| SHA512 | 6ed364784b103d301be23a0937d0bfc82dab25b55e9f5f6bd16bb9810d40698cb0acdaa0ff7c1217ed1aa2bfb014ee823ccf0be2691e7e05796648643b8cbf41 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-12 14:39
Reported
2024-06-12 14:42
Platform
win10v2004-20240508-en
Max time kernel
51s
Max time network
56s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.exe | N/A |
| 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_5567ea406c6fd92642f2ad36d755e768_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_5567ea406c6fd92642f2ad36d755e768_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_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3156 wrote to memory of 1448 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | C:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.exe |
| PID 3156 wrote to memory of 1448 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | C:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.exe |
| PID 3156 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3156 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3156 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_5567ea406c6fd92642f2ad36d755e768_bkransomware.exe"
C:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.exe
C:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.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:\Users\Admin\AppData\Local\Temp\nljdmVGmhrffbgE.exe
| MD5 | abbd49c180a2f8703f6306d6fa731fdc |
| SHA1 | d63f4bfe7f74936b2fbace803e3da6103fbf6586 |
| SHA256 | 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1 |
| SHA512 | 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9 |
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 | dad8c33104e1cd4cbd9a9ff3ef3b952c |
| SHA1 | c123e894041879a98fe936b7386227b32f3a320b |
| SHA256 | a787af28290c94e0682c3767431f6671afda8811dd2a7b28a83812992e427089 |
| SHA512 | a26c38393cd4bc18b359f9247d9d310f89453bc17dca06ca50d490ce02463e8c90c7c1ddb11d9237b41bf9f5be9e70e6a22b91766edd14599b98019a93070784 |
memory/1448-12-0x0000000000400000-0x000000000040D000-memory.dmp