Analysis Overview
SHA256
03db67dd35edc3e7b1f8576b329dc16c573b2bab31e232cdea24d501e02f67f8
Threat Level: Shows suspicious behavior
The file 2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware was found to be: Shows suspicious behavior.
Malicious Activity Summary
Reads user/profile data of web browsers
Executes dropped EXE
Loads dropped DLL
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
2024-06-08 20:38
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-08 20:38
Reported
2024-06-08 20:41
Platform
win7-20240419-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\i8j2RHv6Iq7qI7Z.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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:\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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe"
C:\Users\Admin\AppData\Local\Temp\i8j2RHv6Iq7qI7Z.exe
C:\Users\Admin\AppData\Local\Temp\i8j2RHv6Iq7qI7Z.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
\Users\Admin\AppData\Local\Temp\i8j2RHv6Iq7qI7Z.exe
| MD5 | abbd49c180a2f8703f6306d6fa731fdc |
| SHA1 | d63f4bfe7f74936b2fbace803e3da6103fbf6586 |
| SHA256 | 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1 |
| SHA512 | 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9 |
C:\Windows\CTS.exe
| MD5 | 66df4ffab62e674af2e75b163563fc0b |
| SHA1 | dec8a197312e41eeb3cfef01cb2a443f0205cd6e |
| SHA256 | 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163 |
| SHA512 | 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25 |
memory/2180-15-0x0000000000400000-0x000000000040D000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\i8j2RHv6Iq7qI7Z.exe
| MD5 | 336aa899be3363ae4ed87f2a2f1826b5 |
| SHA1 | 918af21564152610ea6fd4d09bb823d1b1ab0fec |
| SHA256 | 93f23b8b65366ef6a7a841083f17363f5e5545d5b2a5e06cf603330655181662 |
| SHA512 | ee6582b9c808c1022299328386cf48611acacfbd1a774a2bf96c3b9727d6beb1db396416629145e4ed9e34abd63c91372312e2b948d809dcfac3471374930ce6 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-08 20:38
Reported
2024-06-08 20:41
Platform
win10v2004-20240426-en
Max time kernel
93s
Max time network
139s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_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\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 5116 wrote to memory of 64 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe |
| PID 5116 wrote to memory of 64 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe |
| PID 5116 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | C:\Windows\CTS.exe |
| PID 5116 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | C:\Windows\CTS.exe |
| PID 5116 wrote to memory of 1600 | N/A | C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_7ea7d9e934a8ddeb8dfd377f3d0c9131_bkransomware.exe"
C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe
C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 145.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 129.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 168.83.221.88.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Local\Temp\DqQBwMbdaE8d2HW.exe
| MD5 | abbd49c180a2f8703f6306d6fa731fdc |
| SHA1 | d63f4bfe7f74936b2fbace803e3da6103fbf6586 |
| SHA256 | 5f411c0bd9ed9a42b0f07ed568c7d0cf358a83063b225a1f8f7da3296dde90f1 |
| SHA512 | 290dd984acc451b778f3db8c510bae7aec1d9547c3ad0a1829df731c136e4ecc9a37dc6a786cf8f1ecc4d14339aed1288af25055f450f6f953138c8d4d5c36e9 |
C:\Windows\CTS.exe
| MD5 | 66df4ffab62e674af2e75b163563fc0b |
| SHA1 | dec8a197312e41eeb3cfef01cb2a443f0205cd6e |
| SHA256 | 075a6eecd8da1795532318f9cf880efe42461f9464d63f74deb271d33110f163 |
| SHA512 | 1588dd78e6e8972013c40cdb6acfb84c8df7b081197233ce621904b645356c805d0424bb93dd46c55834dc47d9ff39ee1323cf8e670841b3fff24ab98ba87f25 |
memory/64-9-0x0000000000400000-0x000000000040D000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | a13b15cf718cdea621f2a2e31256f706 |
| SHA1 | 6062afba07d0f07d7d09ce149a181d178d8d4f2e |
| SHA256 | 6ecfcbc0b996503404cd0099fd29d44f7cab858b84e58fd5d2648febf1b9a889 |
| SHA512 | 360b8582d76637826dc1665cae2982ff31ccbcd50e3fa447a8e8b074f5523b09f231a3365305acc2b5a925bf128c6788fb724c13321d6b556c79c4d5110720c4 |