Analysis Overview
SHA256
5bdc764598795f4afcb70f6ff95f29114f61ea24a1d836838125c08268e13de9
Threat Level: Known bad
The file 2cb032be3ffbf1a86e75669f6ff3e088.exe was found to be: Known bad.
Malicious Activity Summary
XpertRAT
XpertRAT Core Payload
UAC bypass
Windows security bypass
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
Program crash
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
System policy modification
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-10-04 10:21
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-10-04 10:21
Reported
2021-10-04 10:23
Platform
win7-en-20210920
Max time kernel
127s
Max time network
59s
Command Line
Signatures
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 612 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 612 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 612 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 612 wrote to memory of 1776 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 612 -s 1604
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 | apps.identrust.com | udp |
| US | 192.147.157.177:80 | apps.identrust.com | tcp |
Files
memory/612-53-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/612-55-0x0000000004970000-0x0000000004971000-memory.dmp
memory/612-56-0x0000000075651000-0x0000000075653000-memory.dmp
memory/1776-57-0x0000000000000000-mapping.dmp
memory/1776-58-0x00000000004C0000-0x00000000004C1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-10-04 10:21
Reported
2021-10-04 10:23
Platform
win10v20210408
Max time kernel
148s
Max time network
153s
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\2cb032be3ffbf1a86e75669f6ff3e088.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run | C:\Program Files (x86)\Internet Explorer\iexplore.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\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\2cb032be3ffbf1a86e75669f6ff3e088.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4016 set thread context of 60 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe |
| PID 60 set thread context of 520 | N/A | C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.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\2cb032be3ffbf1a86e75669f6ff3e088.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\2cb032be3ffbf1a86e75669f6ff3e088.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\2cb032be3ffbf1a86e75669f6ff3e088.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
"C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe"
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\2cb032be3ffbf1a86e75669f6ff3e088.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 |
| 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 |
| 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 | 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 |
| 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 |
| 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 |
| 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/4016-114-0x00000000005E0000-0x00000000005E1000-memory.dmp
memory/4016-116-0x0000000005160000-0x0000000005161000-memory.dmp
memory/4016-117-0x0000000005AB0000-0x0000000005B66000-memory.dmp
memory/4016-118-0x0000000005F20000-0x0000000005F50000-memory.dmp
memory/60-119-0x0000000000400000-0x000000000042C000-memory.dmp
memory/60-120-0x00000000004010B8-mapping.dmp
memory/520-123-0x0000000000400000-0x0000000000443000-memory.dmp
memory/520-124-0x0000000000401364-mapping.dmp
memory/520-127-0x0000000003540000-0x0000000003693000-memory.dmp
memory/520-128-0x0000000003541000-0x000000000363D000-memory.dmp
memory/60-129-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3184-132-0x0000000000000000-mapping.dmp