Analysis Overview
SHA256
e920922b09518fb34a15c2dcb673c66a1034de0463f5400270da6dfeab381202
Threat Level: Shows suspicious behavior
The file b24f3629767e95aa88e064dbe3480f9a was found to be: Shows suspicious behavior.
Malicious Activity Summary
UPX packed file
Executes dropped EXE
Loads dropped DLL
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
2024-03-04 14:02
Signatures
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 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-04 14:02
Reported
2024-03-04 14:05
Platform
win7-20240221-en
Max time kernel
141s
Max time network
121s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\53bTumaGm3J5GNT.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\b24f3629767e95aa88e064dbe3480f9a.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | N/A |
| N/A | N/A | N/A | 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:\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\b24f3629767e95aa88e064dbe3480f9a.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\CTS.exe | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.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\b24f3629767e95aa88e064dbe3480f9a.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe
"C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe"
C:\Users\Admin\AppData\Local\Temp\53bTumaGm3J5GNT.exe
C:\Users\Admin\AppData\Local\Temp\53bTumaGm3J5GNT.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
Network
Files
memory/2120-0-0x0000000000B60000-0x0000000000B77000-memory.dmp
\Users\Admin\AppData\Local\Temp\53bTumaGm3J5GNT.exe
| MD5 | 95c9a037d3b01a21275aa6cc73b122a2 |
| SHA1 | c19ed8afc95b91d0cc6bc075047de30eae015386 |
| SHA256 | 1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523 |
| SHA512 | 761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160 |
memory/2120-13-0x0000000000B60000-0x0000000000B77000-memory.dmp
C:\Windows\CTS.exe
| MD5 | 93e5f18caebd8d4a2c893e40e5f38232 |
| SHA1 | fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6 |
| SHA256 | a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8 |
| SHA512 | 986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54 |
memory/2120-14-0x00000000000E0000-0x00000000000F7000-memory.dmp
memory/2124-17-0x0000000001220000-0x0000000001237000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\53bTumaGm3J5GNT.exe
| MD5 | 58d54f6ef0962ac67f3bba4fafc2816a |
| SHA1 | 0b7771bcc6d7fa94ec8528906e738f5bc1d35f9c |
| SHA256 | de85059eb7583ccf4b76dcc2bea00219c7c4bc59dc54f5ffba3fa1bc11725237 |
| SHA512 | e2cdbd15b3a80698997c700c87bebd0a4c3be9219344aa92fc3264fbb905bd9010645bd5c43adcc40a3df49dcb41c3e91ce97858002cd02a9693f83cf8eb50d3 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-04 14:02
Reported
2024-03-04 14:05
Platform
win10v2004-20240226-en
Max time kernel
142s
Max time network
144s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.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 |
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\b24f3629767e95aa88e064dbe3480f9a.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\b24f3629767e95aa88e064dbe3480f9a.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\b24f3629767e95aa88e064dbe3480f9a.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\CTS.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3192 wrote to memory of 5060 | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe |
| PID 3192 wrote to memory of 5060 | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe |
| PID 3192 wrote to memory of 1800 | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | C:\Windows\CTS.exe |
| PID 3192 wrote to memory of 1800 | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | C:\Windows\CTS.exe |
| PID 3192 wrote to memory of 1800 | N/A | C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe | C:\Windows\CTS.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe
"C:\Users\Admin\AppData\Local\Temp\b24f3629767e95aa88e064dbe3480f9a.exe"
C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe
C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe
C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4392 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| GB | 142.250.200.10:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.178.17.96.in-addr.arpa | udp |
Files
memory/3192-0-0x00000000002A0000-0x00000000002B7000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\TopkhXiSrLju4Jw.exe
| MD5 | 95c9a037d3b01a21275aa6cc73b122a2 |
| SHA1 | c19ed8afc95b91d0cc6bc075047de30eae015386 |
| SHA256 | 1d5edcbae3258efb07cc57ba8d7cd1ebe2eb5106ef1a894b787ed2857952c523 |
| SHA512 | 761bb76261712a597f610e3162fa1514d2f56d69d03d1b76b51c6b2a7b0c88bbd385b7dc849c6913f7d861fb3aed8551f26f640d90b621e8629abe2e4bfb6160 |
C:\Windows\CTS.exe
| MD5 | 93e5f18caebd8d4a2c893e40e5f38232 |
| SHA1 | fd55c4e6bcd108bce60ea719c06dc9c4d0adafa6 |
| SHA256 | a66c4b98becac2f69cb107cd087d7a2ca9ef511bc3b83367b1f440f11dd159a8 |
| SHA512 | 986583610d27caae2080834301d072557c5d2c85e33f0d19ab1245d7eae8db146397461572ddb3d491be16f3af210720d54267dac838fdad8fe34afa3d6b7f54 |
memory/3192-8-0x00000000002A0000-0x00000000002B7000-memory.dmp
memory/1800-9-0x00000000001C0000-0x00000000001D7000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
| MD5 | c6bb5f16e2c24d0f96a2956f58f80148 |
| SHA1 | 65d07c3ab62a91bb6be36f7fd7b9ecff8bac596d |
| SHA256 | bb3f5b1d532db732912109070d8208ecaeff1a0dce59a16cf2015df20bb25071 |
| SHA512 | f8b5a3eac7570a842d67d2ea01e12c2ab5dd12bda0f68816df1e4c805efdd212b83beec071febce6493dec22a29e7262a50ec86243bea411bcc23bb2e8b522b0 |