Analysis Overview
SHA256
a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f
Threat Level: Known bad
The file a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f was found to be: Known bad.
Malicious Activity Summary
UPX dump on OEP (original entry point)
UPX dump on OEP (original entry point)
UPX packed file
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 WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-04 01:01
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-04 01:01
Reported
2024-06-04 01:03
Platform
win7-20240508-en
Max time kernel
140s
Max time network
123s
Command Line
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\FsmWysgMwmTWXAZ.exe | N/A |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe | N/A |
Reads user/profile data of web browsers
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe
"C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe"
C:\Users\Admin\AppData\Local\Temp\FsmWysgMwmTWXAZ.exe
C:\Users\Admin\AppData\Local\Temp\FsmWysgMwmTWXAZ.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
memory/1728-0-0x0000000000B20000-0x0000000000B38000-memory.dmp
\Users\Admin\AppData\Local\Temp\FsmWysgMwmTWXAZ.exe
| MD5 | ae6ce17005c63b7e9bf15a2a21abb315 |
| SHA1 | 9b6bdfb9d648fa422f54ec07b8c8ea70389c09eb |
| SHA256 | 4a3387a54eeca83f3a8ff1f5f282f7966c9e7bfe159c8eb45444cab01b3e167e |
| SHA512 | c883a5f599540d636efc8c0abc05aab7bad0aa1b10ab507f43f18e0fba905a10b94ff2f1ba10ae0fee15cc1b90a165a768dc078fda0ac27474f0eef66f6a11af |
memory/1728-15-0x0000000000B20000-0x0000000000B38000-memory.dmp
C:\Windows\CTS.exe
| MD5 | a6749b968461644db5cc0ecceffb224a |
| SHA1 | 2795aa37b8586986a34437081351cdd791749a90 |
| SHA256 | 720023737d7ff700818f55612ba069a609a5ddea646bb3509b615ee3523a4ca2 |
| SHA512 | 2a276816290746ed914af9cf6427aef31ce9395b8e9937090e329a8f74fb84c62d15b196e13346caa086842b3f5f549b9eb20cbf422d18c9c1b63e6342ea90b4 |
memory/2052-17-0x0000000000FD0000-0x0000000000FE8000-memory.dmp
memory/2052-22-0x0000000000FD0000-0x0000000000FE8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-04 01:01
Reported
2024-06-04 01:03
Platform
win10v2004-20240508-en
Max time kernel
140s
Max time network
95s
Command Line
Signatures
UPX dump on OEP (original entry point)
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\QKAxMdItX1CKd47.exe | N/A |
| N/A | N/A | C:\Windows\CTS.exe | N/A |
Reads user/profile data of web browsers
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.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\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe
"C:\Users\Admin\AppData\Local\Temp\a27f261c595fb0040e689a76ccddd1407f7dae0badacedbc8647f1728990b77f.exe"
C:\Users\Admin\AppData\Local\Temp\QKAxMdItX1CKd47.exe
C:\Users\Admin\AppData\Local\Temp\QKAxMdItX1CKd47.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
Files
memory/212-0-0x0000000000250000-0x0000000000268000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\QKAxMdItX1CKd47.exe
| MD5 | ae6ce17005c63b7e9bf15a2a21abb315 |
| SHA1 | 9b6bdfb9d648fa422f54ec07b8c8ea70389c09eb |
| SHA256 | 4a3387a54eeca83f3a8ff1f5f282f7966c9e7bfe159c8eb45444cab01b3e167e |
| SHA512 | c883a5f599540d636efc8c0abc05aab7bad0aa1b10ab507f43f18e0fba905a10b94ff2f1ba10ae0fee15cc1b90a165a768dc078fda0ac27474f0eef66f6a11af |
memory/1580-9-0x0000000000B60000-0x0000000000B78000-memory.dmp
C:\Windows\CTS.exe
| MD5 | a6749b968461644db5cc0ecceffb224a |
| SHA1 | 2795aa37b8586986a34437081351cdd791749a90 |
| SHA256 | 720023737d7ff700818f55612ba069a609a5ddea646bb3509b615ee3523a4ca2 |
| SHA512 | 2a276816290746ed914af9cf6427aef31ce9395b8e9937090e329a8f74fb84c62d15b196e13346caa086842b3f5f549b9eb20cbf422d18c9c1b63e6342ea90b4 |
memory/212-11-0x0000000000250000-0x0000000000268000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | 7eb334cec13e457bd56dbbb4239ffb7d |
| SHA1 | 6ac44ae62b01b536e82b29904096c00853af7557 |
| SHA256 | 81d15ac4adfafc0079903e5cd6bfe540ece4a6a2ea51d40e937bbe7c5af3ab48 |
| SHA512 | ed65a4451cd2b02b3d227bfe14c657151f4c696fa854fa58b50f1b2ae6b197831f967053ab429a8f75900ecdb394b4a739f3d829e092dc9bebac36cea48a5bcf |
memory/1580-34-0x0000000000B60000-0x0000000000B78000-memory.dmp