Analysis Overview
SHA256
3571f7682d415ec6783bc3da38b16d6dab4caef92827793faff4c0ebf3f83d8a
Threat Level: Known bad
The file 92ca235c3f86059cc7d1063221473543 was found to be: Known bad.
Malicious Activity Summary
Detect XtremeRAT payload
Xtremerat family
XtremeRAT
Modifies Installed Components in the registry
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Program crash
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-05 19:21
Signatures
Detect XtremeRAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xtremerat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-05 19:21
Reported
2024-02-05 19:24
Platform
win7-20231215-en
Max time kernel
150s
Max time network
153s
Command Line
Signatures
Detect XtremeRAT payload
| Description | Indicator | Process | Target |
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XtremeRAT
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} | C:\Windows\SysWOW64\svchost.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "explorer.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\svchost.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\csrss.exe | C:\Windows\SysWOW64\explorer.exe | N/A |
| File created | C:\Windows\SysWOW64\InstallDir\csrss.exe | C:\Windows\SysWOW64\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\ | C:\Windows\SysWOW64\explorer.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe
"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\explorer.exe
explorer.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
Files
memory/1864-0-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1864-2-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1944-5-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1708-6-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1944-10-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1944-9-0x0000000010000000-0x000000001004A000-memory.dmp
C:\Windows\SysWOW64\InstallDir\csrss.exe
| MD5 | 92ca235c3f86059cc7d1063221473543 |
| SHA1 | 7ae5d9a5f0f5209d5e13e4980aecbdc2d716d87a |
| SHA256 | 3571f7682d415ec6783bc3da38b16d6dab4caef92827793faff4c0ebf3f83d8a |
| SHA512 | c7b8a037e9f289c7d1ed13846a5ee9e7a0018baf363d90eddfdced7e9ded263ebcaee16be88e150de4b88787414081fb31e0abf3c4651baee78e4ca760dcb6d8 |
memory/1864-12-0x0000000010000000-0x000000001004A000-memory.dmp
memory/1944-13-0x0000000010000000-0x000000001004A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-05 19:21
Reported
2024-02-05 19:24
Platform
win10v2004-20231215-en
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Detect XtremeRAT payload
| 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
XtremeRAT
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A} | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{KE4B0H28-06KN-13JH-6P67-W0OLIFD4312A}\StubPath = "C:\\Windows\\system32\\InstallDir\\csrss.exe restart" | C:\Windows\SysWOW64\explorer.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\csrss.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "explorer.exe" | C:\Windows\SysWOW64\explorer.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\InstallDir\csrss.exe | C:\Windows\SysWOW64\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\ | C:\Windows\SysWOW64\explorer.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\csrss.exe | C:\Windows\SysWOW64\explorer.exe | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\svchost.exe |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Windows\SysWOW64\svchost.exe |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe
"C:\Users\Admin\AppData\Local\Temp\92ca235c3f86059cc7d1063221473543.exe"
C:\Windows\SysWOW64\svchost.exe
svchost.exe
C:\Windows\SysWOW64\explorer.exe
explorer.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4228 -ip 4228
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 480
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4228 -ip 4228
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4228 -s 476
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 177.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 67.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
| US | 8.8.8.8:53 | 10.179.89.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ananzaa.no-ip.org | udp |
Files
memory/4228-0-0x0000000010000000-0x000000001004A000-memory.dmp
memory/2484-1-0x0000000010000000-0x000000001004A000-memory.dmp
memory/2648-2-0x0000000010000000-0x000000001004A000-memory.dmp
memory/2484-5-0x0000000010000000-0x000000001004A000-memory.dmp
memory/2484-6-0x0000000010000000-0x000000001004A000-memory.dmp
memory/4228-7-0x0000000010000000-0x000000001004A000-memory.dmp
memory/2484-8-0x0000000010000000-0x000000001004A000-memory.dmp