Analysis Overview
SHA256
a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84
Threat Level: Known bad
The file a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84 was found to be: Known bad.
Malicious Activity Summary
Detects Windows executables referencing non-Windows User-Agents
Detects Windows executables referencing non-Windows User-Agents
Sets file to hidden
Deletes itself
Executes dropped EXE
Checks computer location settings
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Views/modifies file attributes
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-14 02:20
Signatures
Detects Windows executables referencing non-Windows User-Agents
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-14 02:20
Reported
2024-06-14 02:23
Platform
win7-20240419-en
Max time kernel
141s
Max time network
136s
Command Line
Signatures
Detects Windows executables referencing non-Windows User-Agents
| 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 |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Debug\ayahost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Debug\ayahost.exe | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
| File opened for modification | C:\Windows\Debug\ayahost.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
| File created | C:\Windows\Debug\ayahost.exe | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe
"C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe"
C:\Windows\SysWOW64\attrib.exe
attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A7ECA8~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0uCooo02gM.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | HhzNkbauQV.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | UeKp4wyLJ.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | h7JHPXJ3lc.nnnn.eu.org | udp |
Files
memory/3020-0-0x0000000000400000-0x0000000000411000-memory.dmp
C:\Windows\Debug\ayahost.exe
| MD5 | f09f2ea3fc61ead9ed0995877b1cf347 |
| SHA1 | 8e316310cf8465f84d2fbc529af054bdece7514d |
| SHA256 | 674a2c571da242f804bd51e46ce62b6b6dbff20c132d71cdb9a5ba570fe40b00 |
| SHA512 | 3012dd52c21688dab8bfebc7d478d354394e8bc5cf9df5324eea7d3ab64906d065a96ab19f9def66b8c0e6cb9a833ba6c5672e1294697821b094eed8169d399f |
memory/2984-5-0x0000000000400000-0x0000000000411000-memory.dmp
memory/2984-6-0x0000000000400000-0x0000000000411000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-14 02:20
Reported
2024-06-14 02:23
Platform
win10v2004-20240508-en
Max time kernel
140s
Max time network
125s
Command Line
Signatures
Detects Windows executables referencing non-Windows User-Agents
| 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 |
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
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\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Debug\rgkhost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Debug\rgkhost.exe | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
| File opened for modification | C:\Windows\Debug\rgkhost.exe | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
| File opened for modification | C:\Windows\Debug\rgkhost.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe
"C:\Users\Admin\AppData\Local\Temp\a7eca882afec97c968523e7b41f17292b942cf716c33b5c8e1b4eed92fb88c84.exe"
C:\Windows\SysWOW64\attrib.exe
attrib +a +s +h +r C:\Windows\Debug\rgkhost.exe
C:\Windows\Debug\rgkhost.exe
C:\Windows\Debug\rgkhost.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A7ECA8~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 3kKQ9DpzC.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | rtYWZ31eD.nnnn.eu.org | udp |
| US | 52.111.227.14:443 | tcp | |
| US | 8.8.8.8:53 | 7DydSNctOM.nnnn.eu.org | udp |
Files
memory/3456-0-0x0000000000400000-0x0000000000411000-memory.dmp
C:\Windows\debug\rgkhost.exe
| MD5 | f1167e3ac008c6264e8e9485df343051 |
| SHA1 | 79daf063544bec73011b1d0f69fd922b56828a24 |
| SHA256 | 41b53c9d0de248bc19cd0ce32c13b30c59e4c0c7600ef86cbee3b7fdbe97dd17 |
| SHA512 | 9d40bd7a0517b971ed97e93fc16dbfc9984ea38ea6c5ae2e32eb733951eaee90666ac8d20cc244639b1de909c0cf3c945306ce0120c0e48285ce496652895083 |
memory/3792-5-0x0000000000400000-0x0000000000411000-memory.dmp
memory/3792-6-0x0000000000400000-0x0000000000411000-memory.dmp