Analysis Overview
SHA256
f79146d5e2876038b5f45b119a28499b99a58ea26d45b3da22aaf1ee478e1d4f
Threat Level: Shows suspicious behavior
The file 2024-06-12_6d7bc49156d75d35e900af55c2327bf0_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
2024-06-12 15:04
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-12 15:04
Reported
2024-06-12 15:07
Platform
win7-20240220-en
Max time kernel
120s
Max time network
121s
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:\Windows\CTS.exe | N/A |
| 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_6d7bc49156d75d35e900af55c2327bf0_bkransomware.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_6d7bc49156d75d35e900af55c2327bf0_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_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2364 wrote to memory of 1300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2364 wrote to memory of 1300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2364 wrote to memory of 1300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
| PID 2364 wrote to memory of 1300 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_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\OBiW1AL8U3fvcrh.exe
| MD5 | c403016603297083f92f853a2606b663 |
| SHA1 | f1f3c1e84f860ab88243c5a835ab2f517f343787 |
| SHA256 | 8aed4ec6cc18db0b8c32199c9f0ab1ae9cb9801acf287da3cb6a77bd54c5c78e |
| SHA512 | 6848925e410b80b24c9111c0564a8d09752bd3f26a81095b474add1afc7b82b4586f90c73b34da3e34830ef8569093b9baaa9b3b3f9d15459f2514ff047b4858 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-12 15:04
Reported
2024-06-12 15:07
Platform
win10v2004-20240508-en
Max time kernel
51s
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:\Windows\CTS.exe | N/A |
| 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_6d7bc49156d75d35e900af55c2327bf0_bkransomware.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_6d7bc49156d75d35e900af55c2327bf0_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_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3000 wrote to memory of 3040 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3000 wrote to memory of 3040 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
| PID 3000 wrote to memory of 3040 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_6d7bc49156d75d35e900af55c2327bf0_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\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | c1f64945288c13d5100748b72d31b351 |
| SHA1 | e57ed2526e02160fc4e557f12b7cde2e21dc578b |
| SHA256 | 1c2b6c239b4fe6291d20579c0d6878c792783b2390fe1718e4183cae26e2bbcd |
| SHA512 | 74eb69a27b373c6a55a22e70a332bc84fb6936621142dbfdeeafe5d5c96f455385ddc36dd51ddc49772faba6b6aeccd3d91dc66c90aa6be1736c6a1f9e00b6cf |
C:\Users\Admin\AppData\Local\Temp\TFnV2JBDk3F8OUA.exe
| MD5 | 6a8d3fe46f19295aeed44cd64b9565aa |
| SHA1 | 6e0fc6de2d7f026375022f36e8064ca869931d7e |
| SHA256 | 8ac0d2fa03bcecdd976c9d8cacd171eba2952d4f2ffd70b28425d6f6a97a335d |
| SHA512 | dd2aaed4af14ec72c895e807d892a14a6258241400b50994021a127b0ca28b05ebeaedf226b4e44eb476969ad89682426c077a41e085c216546ae44eff87da7b |