Analysis Overview
SHA256
9864678182d8d06ed1bebd8aad901cab4f77cfced7547f5e365e8c1854ef2cdf
Threat Level: Known bad
The file Cranium.exe was found to be: Known bad.
Malicious Activity Summary
Asyncrat family
Modifies Windows Defender Real-time Protection settings
AsyncRat
Async RAT payload
Checks computer location settings
Windows security modification
Reads user/profile data of web browsers
Legitimate hosting services abused for malware hosting/C2
Enumerates physical storage devices
Unsigned PE
Delays execution with timeout.exe
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious behavior: AddClipboardFormatListener
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-05-30 18:57
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-30 18:57
Reported
2024-05-30 18:59
Platform
win7-20240419-en
Max time kernel
146s
Max time network
146s
Command Line
Signatures
AsyncRat
Modifies Windows Defender Real-time Protection settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1148 wrote to memory of 344 | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 1148 wrote to memory of 344 | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 1148 wrote to memory of 344 | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 1148 wrote to memory of 344 | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Cranium.exe
"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Get-MpPreference -verbose
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 3.67.161.133:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.161.133:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.161.133:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 3.67.161.133:17731 | 5.tcp.eu.ngrok.io | tcp |
Files
memory/1148-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp
memory/1148-1-0x0000000000820000-0x0000000000832000-memory.dmp
memory/1148-2-0x0000000074D40000-0x000000007542E000-memory.dmp
memory/1148-20-0x0000000074D4E000-0x0000000074D4F000-memory.dmp
memory/1148-21-0x0000000074D40000-0x000000007542E000-memory.dmp
memory/1148-23-0x0000000005080000-0x00000000050E4000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
C:\Users\Admin\AppData\Local\Temp\Tar772A.tmp
| MD5 | 4ea6026cf93ec6338144661bf1202cd1 |
| SHA1 | a1dec9044f750ad887935a01430bf49322fbdcb7 |
| SHA256 | 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8 |
| SHA512 | 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b |
memory/344-46-0x000000006F291000-0x000000006F292000-memory.dmp
memory/344-47-0x000000006F290000-0x000000006F83B000-memory.dmp
memory/344-48-0x000000006F290000-0x000000006F83B000-memory.dmp
memory/344-50-0x000000006F290000-0x000000006F83B000-memory.dmp
memory/344-49-0x000000006F290000-0x000000006F83B000-memory.dmp
memory/344-51-0x000000006F290000-0x000000006F83B000-memory.dmp
memory/1148-52-0x00000000050E0000-0x0000000005144000-memory.dmp
memory/1148-73-0x0000000005F90000-0x0000000005FF2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-30 18:57
Reported
2024-05-30 18:59
Platform
win10v2004-20240508-en
Max time kernel
132s
Max time network
101s
Command Line
Signatures
AsyncRat
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Reads user/profile data of web browsers
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | pastebin.com | N/A | N/A |
| N/A | pastebin.com | N/A | N/A |
| N/A | 5.tcp.eu.ngrok.io | N/A | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Cranium.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Cranium.exe
"C:\Users\Admin\AppData\Local\Temp\Cranium.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Cranium"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8095.tmp.bat""
C:\Windows\SysWOW64\schtasks.exe
schtasks /delete /f /tn "Cranium"
C:\Windows\SysWOW64\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | pastebin.com | udp |
| US | 172.67.19.24:443 | pastebin.com | tcp |
| US | 8.8.8.8:53 | 5.tcp.eu.ngrok.io | udp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 24.19.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.58.158.18.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| DE | 18.158.58.205:17731 | 5.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| 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 | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/3344-0-0x000000007528E000-0x000000007528F000-memory.dmp
memory/3344-1-0x0000000000180000-0x0000000000192000-memory.dmp
memory/3344-2-0x0000000075280000-0x0000000075A30000-memory.dmp
memory/3344-3-0x0000000004B80000-0x0000000004BE6000-memory.dmp
memory/3344-4-0x0000000004FD0000-0x000000000506C000-memory.dmp
memory/3344-7-0x0000000006090000-0x0000000006634000-memory.dmp
memory/3344-8-0x00000000067C0000-0x0000000006836000-memory.dmp
memory/3344-9-0x0000000006740000-0x00000000067A8000-memory.dmp
memory/3344-10-0x0000000006890000-0x00000000068AE000-memory.dmp
memory/3344-11-0x0000000006A80000-0x0000000006B12000-memory.dmp
memory/3344-12-0x0000000006B20000-0x0000000006BBC000-memory.dmp
memory/3344-13-0x0000000006A00000-0x0000000006A08000-memory.dmp
memory/3344-14-0x0000000006C30000-0x0000000006C70000-memory.dmp
memory/3344-15-0x0000000006A10000-0x0000000006A1A000-memory.dmp
memory/3344-16-0x000000007528E000-0x000000007528F000-memory.dmp
memory/3344-17-0x0000000075280000-0x0000000075A30000-memory.dmp
memory/3344-18-0x0000000006C80000-0x0000000006CE2000-memory.dmp
memory/3344-19-0x0000000007150000-0x000000000715A000-memory.dmp
memory/3344-20-0x0000000006FC0000-0x0000000007024000-memory.dmp
memory/3344-21-0x0000000007090000-0x00000000070F4000-memory.dmp
memory/3344-22-0x0000000007470000-0x00000000074D4000-memory.dmp
memory/3344-26-0x0000000075280000-0x0000000075A30000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp8095.tmp.bat
| MD5 | 49d1d4e4f39cfd539d4a88c49c22cdef |
| SHA1 | 19fc4eac6ed8282e76bdf86e82473ad6320e742a |
| SHA256 | b8ffcda21b360422bd0fb94f762ab2456b4eee1113105203dc73e1bbbf46fd0e |
| SHA512 | d1aa04695140d93c5574c8cd997b2d58d8ed98b150d8bc620c8b743090582e2d7d1eb36360b3ba3e3b86b4d89e50137d1d7c11892cc8b85b8c265629e48d0f48 |