Analysis Overview
SHA256
1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215
Threat Level: Known bad
The file 1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215 was found to be: Known bad.
Malicious Activity Summary
UAC bypass
XpertRAT Core Payload
Windows security bypass
XpertRAT
Adds policy Run key to start application
Deletes itself
Windows security modification
Checks whether UAC is enabled
Adds Run key to start application
Suspicious use of SetThreadContext
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
System policy modification
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-10-06 08:13
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-10-06 08:13
Reported
2021-10-06 08:16
Platform
win10-en-20210920
Max time kernel
148s
Max time network
133s
Command Line
Signatures
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds policy Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\notepad.exe | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0 = "C:\\Users\\Admin\\AppData\\Roaming\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0\\L3Q7J4T2-J8A6-L6O4-W4G3-U5J7D0W2W5F0.exe" | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2352 set thread context of 3020 | N/A | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe |
| PID 3020 set thread context of 4084 | N/A | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
Suspicious use of WriteProcessMemory
System policy modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
"C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe"
C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\1a55b87ef779fe996b8aef3e98ea9252a5ce3a02d3a0a87000554bd41033a215.exe
C:\Windows\SysWOW64\notepad.exe
notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | store2.gofile.io | udp |
| FR | 31.14.69.10:443 | store2.gofile.io | tcp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 52.182.143.208:443 | tcp | |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 91.121.250.249:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
Files
memory/2352-115-0x0000000000080000-0x0000000000081000-memory.dmp
memory/2352-117-0x0000000004A50000-0x0000000004A51000-memory.dmp
memory/2352-118-0x00000000058D0000-0x00000000059AF000-memory.dmp
memory/2352-119-0x0000000005B30000-0x0000000005B60000-memory.dmp
memory/3020-120-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3020-121-0x00000000004010B8-mapping.dmp
memory/4084-124-0x0000000000400000-0x0000000000443000-memory.dmp
memory/4084-125-0x0000000000401364-mapping.dmp
memory/4084-128-0x0000000003670000-0x00000000037C3000-memory.dmp
memory/4084-129-0x0000000003671000-0x000000000376D000-memory.dmp
memory/3020-132-0x0000000000400000-0x000000000042C000-memory.dmp
memory/968-133-0x0000000000000000-mapping.dmp