Analysis Overview
SHA256
cd6f3e3f4236416da3ab4d081e566e0be35eba76ea23dff0e1bc48e7ea306c82
Threat Level: Known bad
The file ahk.exe was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus
Orcus main payload
Orcus family
Orcurs Rat Executable
Checks computer location settings
Executes dropped EXE
Drops desktop.ini file(s)
Drops file in System32 directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Uses Task Scheduler COM API
Suspicious use of SetWindowsHookEx
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-20 08:29
Signatures
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcus family
Orcus main payload
| 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
2024-02-20 08:29
Reported
2024-02-20 08:47
Platform
win10v2004-20231215-en
Max time kernel
12s
Max time network
18s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
| N/A | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
| N/A | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WindowsInput.exe | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.InstallState | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
| File created | C:\Windows\System32\Data\CheckUpdate.exe | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File opened for modification | C:\Windows\System32\Data\CheckUpdate.exe | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File created | C:\Windows\System32\Data\CheckUpdate.exe.config | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\ahk.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\Data\CheckUpdate.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ahk.exe
"C:\Users\Admin\AppData\Local\Temp\ahk.exe"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jygdflun.cmdline"
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES789C.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC789B.tmp"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
C:\Windows\System32\Data\CheckUpdate.exe
"C:\Windows\System32\Data\CheckUpdate.exe"
C:\Windows\System32\Data\CheckUpdate.exe
C:\Windows\System32\Data\CheckUpdate.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe" /launchSelfAndExit "C:\Windows\System32\Data\CheckUpdate.exe" 5048 /protectFile
Network
| Country | Destination | Domain | Proto |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | 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 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | centre-shaped.gl.at.ply.gg | udp |
| US | 147.185.221.18:30014 | centre-shaped.gl.at.ply.gg | tcp |
Files
memory/1648-0-0x00007FFF89900000-0x00007FFF8A2A1000-memory.dmp
memory/1648-1-0x0000000001670000-0x0000000001680000-memory.dmp
memory/1648-2-0x000000001BC20000-0x000000001BC7C000-memory.dmp
memory/1648-3-0x00007FFF89900000-0x00007FFF8A2A1000-memory.dmp
memory/1648-6-0x000000001BE10000-0x000000001BE1E000-memory.dmp
memory/1648-7-0x000000001C2F0000-0x000000001C7BE000-memory.dmp
memory/1648-8-0x000000001C860000-0x000000001C8FC000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\jygdflun.cmdline
| MD5 | db9900421e3a84b9e5f70db927b61736 |
| SHA1 | 6025ef74132c64c811e77aac57c1a6fce9cf52ab |
| SHA256 | e8281892b196cc2f82c8591c38a7f0a5585bca231086f80d1413dc4a2cdc7d89 |
| SHA512 | daca8e235ed9a88e2585d27df3e36b24a4a085612a75632b20bd788ebf17f04dccde6d71e75ea2e1831a4fe27b520feee4919d40251b4a076a68e7ba4030bf58 |
\??\c:\Users\Admin\AppData\Local\Temp\jygdflun.0.cs
| MD5 | 69530d0428734cf80a6bb99911f175fc |
| SHA1 | 3fe568fa91cac6f290e9e025bdce5770edbd9528 |
| SHA256 | 5234e7bde08e85184db1335e987ee46513f00d847023e197ce11fe88d6450038 |
| SHA512 | b11870c97d7255988e7b54be47ae11c869dfc5a3a4c79421ce1828c5198ac17d99f2e9a20eadbcd760c590f16954336829d3a24afe1eca29d78626ebfac1efbd |
memory/3004-14-0x0000000002200000-0x0000000002210000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\CSC789B.tmp
| MD5 | 9028bb7a60d8fc9ed8fdc162a58ed639 |
| SHA1 | f9d1aaafaa1217b81018558cd99e87c11e4ec97d |
| SHA256 | d1ccedf23dd66a800b8f2606967ed128ded2aec77b673c13a03aa20f32d05d3d |
| SHA512 | 347c0a3ee869fd1218e160d780feeee4251d65dedddd4edaed7fa7a4654a1f5995966ffba412b347a31dfa46b94388ba5ad504beff011d9ac794aca007512d5f |
C:\Users\Admin\AppData\Local\Temp\RES789C.tmp
| MD5 | 59e624ff60634c0041b6f49f07ce162b |
| SHA1 | 48da83a72c6a06bb166f9fc9f4fbecb8973a7b63 |
| SHA256 | 7bc99c910074d5a8d98fff88593eef6f4e094a25e77f5516fb86f9a7639f95f2 |
| SHA512 | d5c78aeef5b088b9c1cd3e6f472049d18bc552819a24ba4ded3ef2ed96444eba9dd4005fb9f7e45a55d1032a2bfcba922898edfc87e013c749940f1195c307f9 |
C:\Users\Admin\AppData\Local\Temp\jygdflun.dll
| MD5 | 56b14a323b99efdd3570baf1f8cd35c9 |
| SHA1 | ae7ff00120aac7a1d5e1fb5ef2d1a29a6e8c2543 |
| SHA256 | 07390b4cffb38172b8cea85ae1bc8eb3732951e1c4a70ad35c4cecd5043a8ee3 |
| SHA512 | 1b8e74b801445a2c433b1cd87b92148b81fe0474aa0af0a4a1a350a44707d2d6892ef9cb0fa2faf40c207811d144c5030df0712bba1b9848725ed0fc578fa7d1 |
memory/1648-22-0x000000001CF20000-0x000000001CF36000-memory.dmp
memory/1648-24-0x0000000001640000-0x0000000001652000-memory.dmp
memory/1648-25-0x0000000001620000-0x0000000001628000-memory.dmp
memory/1648-26-0x000000001CF60000-0x000000001CF80000-memory.dmp
C:\Windows\SysWOW64\WindowsInput.exe
| MD5 | e6fcf516d8ed8d0d4427f86e08d0d435 |
| SHA1 | c7691731583ab7890086635cb7f3e4c22ca5e409 |
| SHA256 | 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337 |
| SHA512 | c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e |
C:\Windows\SysWOW64\WindowsInput.exe.config
| MD5 | a2b76cea3a59fa9af5ea21ff68139c98 |
| SHA1 | 35d76475e6a54c168f536e30206578babff58274 |
| SHA256 | f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839 |
| SHA512 | b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad |
memory/4160-40-0x0000000000B00000-0x0000000000B0C000-memory.dmp
memory/4160-41-0x00007FFF86E20000-0x00007FFF878E1000-memory.dmp
memory/4160-42-0x000000001B790000-0x000000001B7A0000-memory.dmp
memory/4160-43-0x0000000002DB0000-0x0000000002DC2000-memory.dmp
memory/4160-44-0x000000001B6E0000-0x000000001B71C000-memory.dmp
memory/4160-48-0x00007FFF86E20000-0x00007FFF878E1000-memory.dmp
memory/4952-50-0x00007FFF86E20000-0x00007FFF878E1000-memory.dmp
memory/4952-51-0x000000001A2A0000-0x000000001A2B0000-memory.dmp
memory/4952-52-0x000000001A6C0000-0x000000001A7CA000-memory.dmp
C:\Windows\System32\Data\CheckUpdate.exe
| MD5 | fd8c295d75ffb1367e7f8248336fbdb7 |
| SHA1 | 52c3aed0df6a5f9751db4436f6a23e718ad164d7 |
| SHA256 | cd6f3e3f4236416da3ab4d081e566e0be35eba76ea23dff0e1bc48e7ea306c82 |
| SHA512 | c27eddce59609f602a8b0d2fff0fadbc3a9837093351048b7bf3d3a9a3a668eb02e9ec63513866b4d76db088472efe03947f4f71c72539daf1488de38dbc26e0 |
memory/1648-70-0x00007FFF89900000-0x00007FFF8A2A1000-memory.dmp
memory/5048-71-0x00000000002D0000-0x00000000003BC000-memory.dmp
memory/5048-69-0x00007FFF86E20000-0x00007FFF878E1000-memory.dmp
memory/5048-72-0x00000000024F0000-0x0000000002500000-memory.dmp
memory/5048-73-0x0000000000BA0000-0x0000000000BB2000-memory.dmp
memory/5048-74-0x00000000024A0000-0x00000000024EE000-memory.dmp
memory/5048-76-0x000000001AF70000-0x000000001AF88000-memory.dmp
memory/5048-77-0x000000001AF90000-0x000000001AFA0000-memory.dmp
memory/5048-79-0x000000001C2B0000-0x000000001C472000-memory.dmp
memory/1652-78-0x00007FFF86E20000-0x00007FFF878E1000-memory.dmp
memory/1652-82-0x000000001B570000-0x000000001B580000-memory.dmp
C:\Users\Admin\AppData\Roaming\svchost.exe
| MD5 | 913967b216326e36a08010fb70f9dba3 |
| SHA1 | 7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf |
| SHA256 | 8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a |
| SHA512 | c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33 |