Analysis Overview
SHA256
491adfdc3cce051731ea87c3ca9e16ffcdd8d8cc9e10d9649f8b49d5575def92
Threat Level: Shows suspicious behavior
The file 2024-06-03_eed7c72ac005ec2aff1842c04688a730_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
2024-06-03 09:46
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-03 09:46
Reported
2024-06-03 09:48
Platform
win7-20240508-en
Max time kernel
118s
Max time network
118s
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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2980 wrote to memory of 300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2980 wrote to memory of 300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2980 wrote to memory of 300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2980 wrote to memory of 300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_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\SvyHz1zgaXS2vBc.exe
| MD5 | 21e544ff9c1e4bb3185a25f0a71c1a01 |
| SHA1 | 1d44474e33167c196c66a19dae2bbfb1ae37c402 |
| SHA256 | f17987676d34e3a70a2101bf0d48737472fc73b2a9ee16a0d181cff1d095824a |
| SHA512 | bdfa3b0354b862a0db9931f68bed1984da5c2a21462fcbc213a642513130b9410a870cc51d34cf810f22f4b0f997f9e5a41f2852c226025ea27b09cb3eee506c |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-03 09:46
Reported
2024-06-03 09:48
Platform
win10v2004-20240426-en
Max time kernel
92s
Max time network
94s
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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_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\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1336 wrote to memory of 2732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1336 wrote to memory of 2732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
| PID 1336 wrote to memory of 2732 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_eed7c72ac005ec2aff1842c04688a730_bkransomware.exe"
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 30.243.111.52.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 | 8d4a552c02bd977f7f99f7f34adb866f |
| SHA1 | 707944e73a0dbc7cc768edcb625f1d62eabc129f |
| SHA256 | 458e7cba3b5da1407271567433ced020d2ccf4b57bf7db4fada141b68bd43a04 |
| SHA512 | bc38b58e5aca68b955452f3a4a44dae42b2760b5501b9011afc989fb67713efcbb959377444a49563caa104f632e53abc1d63701a34876f56d189f358afdbce0 |
C:\Users\Admin\AppData\Local\Temp\piEkocDQIPq3ujK.exe
| MD5 | 027e94f3e2dd93dfe8b0d69118fed7d5 |
| SHA1 | 6a0187e291539a6c11b64a1d5ca56f097d8e4343 |
| SHA256 | dc68c1c45c77b7130185702ddd2996d3d407178912644b04c08f8eda80fe7a25 |
| SHA512 | 2e535b394625f64a376e53aafebea467d58d259ca274bdf870948b2d2f042754c189de3e6a56e48d799dcf57ae26b94b7e45d379a256dec50defa87f4d9b3519 |