Analysis Overview
SHA256
ace7357cb47c8f0c23ee7e1f6fe9ca94c7c1d25bd39ad7965174d3e7dedec70f
Threat Level: Known bad
The file ef2d0d45bafd7c1f5cf4564c1307ea7d was found to be: Known bad.
Malicious Activity Summary
UAC bypass
XpertRAT
XpertRAT Core payload
Windows security bypass
Adds policy Run key to start application
Windows security modification
Deletes itself
Adds Run key to start application
Checks whether UAC is enabled
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of SetWindowsHookEx
System policy modification
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2023-12-20 16:56
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-20 16:56
Reported
2023-12-22 15:04
Platform
win10v2004-20231215-en
Max time kernel
146s
Max time network
150s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\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 |
| 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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3420 set thread context of 2300 | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe |
| PID 2300 set thread context of 3692 | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.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\ef2d0d45bafd7c1f5cf4564c1307ea7d.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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
"C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe"
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Windows\SysWOW64\notepad.exe
notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 4.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
Files
memory/3420-0-0x0000000000A10000-0x0000000000A82000-memory.dmp
memory/3420-1-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3420-2-0x0000000005560000-0x0000000005570000-memory.dmp
memory/3420-3-0x0000000005400000-0x0000000005450000-memory.dmp
memory/3420-4-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3420-5-0x0000000005560000-0x0000000005570000-memory.dmp
memory/3420-6-0x00000000054D0000-0x0000000005504000-memory.dmp
memory/2300-7-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2300-10-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3420-12-0x0000000074B40000-0x00000000752F0000-memory.dmp
memory/3692-14-0x0000000000400000-0x0000000000443000-memory.dmp
memory/2300-21-0x0000000000400000-0x000000000042C000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-20 16:56
Reported
2023-12-22 15:04
Platform
win7-20231215-en
Max time kernel
146s
Max time network
147s
Command Line
Signatures
UAC bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Windows security bypass
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0" | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\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 |
| 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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2052 set thread context of 2624 | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe |
| PID 2624 set thread context of 2416 | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | C:\Program Files (x86)\Internet Explorer\iexplore.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.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\ef2d0d45bafd7c1f5cf4564c1307ea7d.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\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
"C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe"
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Program Files (x86)\Internet Explorer\iexplore.exe
C:\Users\Admin\AppData\Local\Temp\ef2d0d45bafd7c1f5cf4564c1307ea7d.exe
C:\Windows\SysWOW64\notepad.exe
notepad.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| US | 8.8.8.8:53 | kapasky-antivirus.firewall-gateway.net | udp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
| NL | 2.56.57.193:4000 | kapasky-antivirus.firewall-gateway.net | tcp |
Files
memory/2052-0-0x00000000002F0000-0x0000000000362000-memory.dmp
memory/2052-1-0x00000000749E0000-0x00000000750CE000-memory.dmp
memory/2052-2-0x00000000020D0000-0x0000000002110000-memory.dmp
memory/2052-3-0x00000000749E0000-0x00000000750CE000-memory.dmp
memory/2052-4-0x0000000000640000-0x0000000000690000-memory.dmp
memory/2052-5-0x00000000020D0000-0x0000000002110000-memory.dmp
memory/2052-6-0x0000000000470000-0x00000000004A4000-memory.dmp
memory/2624-7-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2624-8-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2624-9-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2624-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2624-12-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2052-14-0x00000000749E0000-0x00000000750CE000-memory.dmp
memory/2624-18-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2416-19-0x0000000000400000-0x0000000000443000-memory.dmp
memory/1780-26-0x0000000000A00000-0x0000000000A30000-memory.dmp
memory/2624-27-0x0000000000400000-0x000000000042C000-memory.dmp