Analysis Overview
SHA256
85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a
Threat Level: Known bad
The file 85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a was found to be: Known bad.
Malicious Activity Summary
UAC bypass
Windows security bypass
XpertRAT Core Payload
XpertRAT
Adds policy Run key to start application
Deletes itself
Windows security modification
Checks whether UAC is enabled
Adds Run key to start application
Program crash
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
System policy modification
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-09-20 15:48
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-09-20 15:48
Reported
2021-09-20 15:51
Platform
win10-en-20210920
Max time kernel
140s
Max time network
149s
Command Line
Signatures
UAC bypass
Windows security bypass
XpertRAT
XpertRAT Core Payload
| Description | Indicator | Process | Target |
| 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\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| 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 |
| 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 |
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\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2348 set thread context of 1008 | N/A | C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe |
| PID 1008 set thread context of 1336 | N/A | C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
| PID 1008 set thread context of 3800 | N/A | C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.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\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe
"C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.bing.com
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.google.com
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.facebook.com
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Test-Connection www.twitter.com
C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe
C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1336 -s 100
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\85f0af15d708b6a2ea67a30f2a858efc9f32af678a5633289c297f588443cd7a.exe
C:\Windows\SysWOW64\notepad.exe
notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.bing.com | udp |
| US | 8.8.8.8:53 | www.facebook.com | udp |
| US | 8.8.8.8:53 | www.twitter.com | udp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| FR | 146.59.132.186:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
Files
memory/2348-115-0x0000000000470000-0x0000000000471000-memory.dmp
memory/2348-117-0x00000000052D0000-0x00000000052D1000-memory.dmp
memory/2348-118-0x0000000004DD0000-0x0000000004DD1000-memory.dmp
memory/2348-119-0x0000000004CC0000-0x0000000004D52000-memory.dmp
memory/2348-120-0x0000000004CE0000-0x0000000004CE1000-memory.dmp
memory/3128-121-0x0000000000000000-mapping.dmp
memory/3460-122-0x0000000000000000-mapping.dmp
memory/2724-123-0x0000000000000000-mapping.dmp
memory/2724-130-0x0000000000DD0000-0x0000000000DD1000-memory.dmp
memory/3460-133-0x0000000007940000-0x0000000007941000-memory.dmp
memory/2724-137-0x0000000000EE0000-0x0000000000EE1000-memory.dmp
memory/3128-136-0x00000000067C0000-0x00000000067C1000-memory.dmp
memory/3128-139-0x00000000067C2000-0x00000000067C3000-memory.dmp
memory/3460-138-0x0000000004E30000-0x0000000004E31000-memory.dmp
memory/3460-140-0x0000000004E32000-0x0000000004E33000-memory.dmp
memory/2724-141-0x0000000000EE2000-0x0000000000EE3000-memory.dmp
memory/3128-142-0x0000000006C60000-0x0000000006C61000-memory.dmp
memory/3128-146-0x0000000006D70000-0x0000000006D71000-memory.dmp
memory/2724-148-0x0000000007640000-0x0000000007641000-memory.dmp
memory/3128-151-0x0000000007610000-0x0000000007611000-memory.dmp
memory/3128-154-0x0000000007550000-0x0000000007551000-memory.dmp
memory/3460-157-0x0000000008780000-0x0000000008781000-memory.dmp
memory/3460-160-0x00000000089C0000-0x00000000089C1000-memory.dmp
memory/2724-173-0x0000000008B70000-0x0000000008B71000-memory.dmp
memory/3460-178-0x0000000009730000-0x0000000009731000-memory.dmp
memory/3460-180-0x0000000009780000-0x0000000009781000-memory.dmp
memory/2724-203-0x0000000009C90000-0x0000000009C91000-memory.dmp
memory/2724-207-0x0000000000EE3000-0x0000000000EE4000-memory.dmp
memory/3460-209-0x0000000004E33000-0x0000000004E34000-memory.dmp
memory/3128-208-0x00000000067C3000-0x00000000067C4000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | ad6bde808bdc16964ad7a372e7b73cfd |
| SHA1 | 2194901b8e870a408b4aa4d0534d9df9c6060b9d |
| SHA256 | 4025d9a34e53b11408497c52a42f477697c240c351e6ba44404fee866730a45b |
| SHA512 | 57aad0c89654751afc3e8f71924a5a9de569e88c55f05b5cab18491960bc9d09ee7f7d106cea3c3ac09b8099efaff52fd47645f7e6869d0f06cee3d60d66a66f |
memory/1896-407-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 517212a16fbab4b6cf90069cfeadc27f |
| SHA1 | 755aafbaa6e73cdf728cb198e7d0af1623ed6459 |
| SHA256 | dd3143f6dea807befafc7bac40a2aee4a52e8f09af9665e26569a2b7883eec88 |
| SHA512 | dc20545e5b22185a060b918691406b8b070ec727298b76c7064c29047aa90054df95ad8433eebfddde8893bf501ee808bc3f0b7ecf00c8d30b161f83bce8de8e |
memory/1896-421-0x0000000001182000-0x0000000001183000-memory.dmp
memory/1896-420-0x0000000001180000-0x0000000001181000-memory.dmp
memory/1896-434-0x0000000001183000-0x0000000001184000-memory.dmp
memory/2348-503-0x0000000007130000-0x0000000007176000-memory.dmp
memory/2348-504-0x0000000004F50000-0x0000000004F80000-memory.dmp
memory/1008-505-0x0000000000400000-0x000000000042C000-memory.dmp
memory/1008-506-0x00000000004010B8-mapping.dmp
memory/1336-510-0x0000000000401364-mapping.dmp
memory/1008-511-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3800-513-0x0000000000401364-mapping.dmp
memory/2472-521-0x0000000000000000-mapping.dmp