Analysis Overview
SHA256
86d3188cd7bd8b2be012a0eafbd82f29ec0499ba4fc720d474cbd3ad6ff987df
Threat Level: Shows suspicious behavior
The file 2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_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
2024-06-13 00:36
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-13 00:36
Reported
2024-06-13 00:38
Platform
win7-20240611-en
Max time kernel
120s
Max time network
124s
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_5a1c3d686b9a58de464bc4fe8ce4c2df_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_5a1c3d686b9a58de464bc4fe8ce4c2df_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_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2152 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2152 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2152 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2152 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_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\SfeLVmqxnqmAFx7.exe
| MD5 | 6e0e7264eb4cc18a4914c26d83d5d1d1 |
| SHA1 | e6b67a56700f0845b2d4c4a5fdcdf4cf6340a731 |
| SHA256 | def57904a9a4fc4033ba036c31af179481c1aada4f3fa6866203b3b11f11f9fd |
| SHA512 | e320e2a8de5fa42eb7a117da8d03f6e3527110179cbe9ca6713e4052be0228642e29890a1a330eed5cbdaaded56248f07c5fc453da5adf77a5744b083fbd1e92 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-13 00:36
Reported
2024-06-13 00:38
Platform
win10v2004-20240508-en
Max time kernel
52s
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\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_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_5a1c3d686b9a58de464bc4fe8ce4c2df_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_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2976 wrote to memory of 5008 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2976 wrote to memory of 5008 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2976 wrote to memory of 5008 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_5a1c3d686b9a58de464bc4fe8ce4c2df_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 | 435f008aa43f15ce9d42749f0b5ddbd6 |
| SHA1 | 1396af9fc9a252fd16d1579d4f546432e6a4f243 |
| SHA256 | 7ec2e987e77e95bcaaf60ad9a0c99590f3f3a213cbcc5888153742b151806d31 |
| SHA512 | f69fecd0ca34cd5baba4a0b9a69270e2448837d377cd8c975f9c0b84c441bdd44959e7aba694a92534347391ce9fb3604e0254ce8dc4e6804ac9833e6339bdf8 |
C:\Users\Admin\AppData\Local\Temp\Pwhp1xlp6p38Klm.exe
| MD5 | 18147281b9055821fb845d96bd1ef8b3 |
| SHA1 | 9d79f2232b7f7009680594d1a9909ebbf1f072cc |
| SHA256 | bb697c41d18de01a5cb38354e7db2ad1b9b3ca86419d12399b7970836d07901e |
| SHA512 | cafb05b65779ac0f38a43d03fde27feb47b0c9e68b50dfb670d3fbfc723a9f5ebbef94d87f065c350ae992cb1f9bc98375b6473ff7a5ecdafc5692a7c1991a49 |