Analysis Overview
SHA256
ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae
Threat Level: Known bad
The file ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae was found to be: Known bad.
Malicious Activity Summary
Orcus main payload
Orcus
Orcurs Rat Executable
Checks computer location settings
Executes dropped EXE
Windows security modification
Adds Run key to start application
Drops file in System32 directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Suspicious use of SendNotifyMessage
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-08 01:13
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-08 01:13
Reported
2024-01-08 01:16
Platform
win7-20231129-en
Command Line
Signatures
Processes
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-08 01:13
Reported
2024-01-08 01:16
Platform
win10v2004-20231215-en
Max time kernel
158s
Max time network
165s
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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation | C:\Program Files\WSupdate\WSupdate.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe | N/A |
| 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:\Program Files\WSupdate\WSupdate.exe | N/A |
| N/A | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
Windows security modification
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features\TamperProtection = "4" | C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WSupdate = "\"C:\\Program Files\\WSupdate\\WSupdate.exe\"" | C:\Program Files\WSupdate\WSupdate.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\Zyxuqgxigcthmi.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.InstallState | C:\Windows\SysWOW64\WindowsInput.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files\WSupdate\WSupdate.exe | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
| File created | C:\Program Files\WSupdate\WSupdate.exe.config | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
| File created | C:\Program Files\WSupdate\WSupdate.exe | C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\WSupdate\WSupdate.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae.exe
"C:\Users\Admin\AppData\Local\Temp\ec236e3bbd25562bf229cd5fabad93716feaf2a151803fd901b2374d6cdcfbae.exe"
C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe
"C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe"
C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe
"C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
C:\Program Files\WSupdate\WSupdate.exe
"C:\Program Files\WSupdate\WSupdate.exe"
C:\Program Files\WSupdate\WSupdate.exe
"C:\Program Files\WSupdate\WSupdate.exe"
C:\Users\Admin\AppData\Local\Temp\WSupdate.exe
"C:\Users\Admin\AppData\Local\Temp\WSupdate.exe" /launchSelfAndExit "C:\Program Files\WSupdate\WSupdate.exe" 1148 /protectFile
C:\Users\Admin\AppData\Local\Temp\WSupdate.exe
"C:\Users\Admin\AppData\Local\Temp\WSupdate.exe" /watchProcess "C:\Program Files\WSupdate\WSupdate.exe" 1148 "/protectFile"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| N/A | 192.168.219.110:10134 | tcp | |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | nonamedc.mcv.kr | udp |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
| N/A | 192.168.219.174:8080 | nonamedc.mcv.kr | tcp |
| US | 8.8.8.8:53 | 213.143.182.52.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 | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| N/A | 192.168.219.110:10134 | tcp | |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
Files
memory/488-0-0x0000000000170000-0x0000000000210000-memory.dmp
memory/488-1-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/488-2-0x0000000000A40000-0x0000000000A50000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Zyxuqgxigcthmi.exe
| MD5 | 20deef4284ad2edfd11ff24f41eba5fc |
| SHA1 | 4a4712770f4a70937b5ca36e09b4daca6aa4e084 |
| SHA256 | 32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801 |
| SHA512 | 47c87cee5372c5b75f8d8938e7f94548d969e8014d22780d921ac43d4789b256e4c4be340aee59682d29788b16641fde57bc7335a6d53db419d32c6a96368109 |
memory/5076-17-0x0000000000AF0000-0x0000000000BDE000-memory.dmp
memory/5076-18-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Demherdegkajmx.exe
| MD5 | f9ce71a060c9c94d7d888298ab8d85dd |
| SHA1 | c2eead0bbf01b911776bcc8dd02e30f8dc30769d |
| SHA256 | 3fcb6c9ffd331216c9e1f8f78286ec991107d8f3834d2ff5c795db6d327239d0 |
| SHA512 | 68daafeacd13a73e905ec28271a5f120995842ff708307f12de833717077c94d10071581a07441637f75896470bd884d9c11d924d4646e4cea2d4504978a18b7 |
memory/5076-28-0x0000000001380000-0x00000000013DC000-memory.dmp
memory/5076-27-0x000000001B900000-0x000000001B910000-memory.dmp
memory/5076-29-0x0000000002E20000-0x0000000002E2E000-memory.dmp
memory/488-31-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/5076-32-0x000000001B830000-0x000000001B842000-memory.dmp
memory/5076-33-0x0000000002E50000-0x0000000002E58000-memory.dmp
memory/5076-34-0x000000001B840000-0x000000001B848000-memory.dmp
memory/1128-35-0x00007FFE29100000-0x00007FFE29AA1000-memory.dmp
memory/1128-36-0x00007FFE29100000-0x00007FFE29AA1000-memory.dmp
memory/5076-37-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/5076-38-0x000000001B870000-0x000000001B882000-memory.dmp
memory/5076-39-0x000000001C6B0000-0x000000001C6EC000-memory.dmp
memory/1128-41-0x00007FFE29100000-0x00007FFE29AA1000-memory.dmp
memory/5076-42-0x000000001B900000-0x000000001B910000-memory.dmp
memory/5076-43-0x000000001C800000-0x000000001C90A000-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/3080-58-0x00000000002A0000-0x00000000002AC000-memory.dmp
memory/3080-59-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/3080-60-0x000000001AEC0000-0x000000001AED0000-memory.dmp
memory/3080-64-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/404-66-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/404-67-0x0000000019930000-0x0000000019940000-memory.dmp
memory/1148-83-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/1148-84-0x000000001B550000-0x000000001B560000-memory.dmp
memory/5076-85-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
C:\Users\Admin\AppData\Roaming\WSupdate\err_2d5f462f00ed43cba223b57c0a9d157a.dat
| MD5 | cb0b52a7bb029236799363935e58f8a6 |
| SHA1 | 18ed3d808aecb3c8f6a5b4105f99c3942ad1f712 |
| SHA256 | 5dd9354a89372fb0bbeef1d47988f78e41c4ffe8d6bea6216307ada47e19c209 |
| SHA512 | a2e11aa193a0683fc86231e55383398afd065158e50596342ca6f99ff20e2bfacf05c54cddfd3227c65af1d1b47a85b2119cc103ed041fca9e92ae276d388574 |
memory/1148-88-0x000000001C740000-0x000000001C78E000-memory.dmp
memory/5036-90-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/404-91-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/5036-92-0x000000001BBE0000-0x000000001BBF0000-memory.dmp
memory/1148-93-0x000000001CAF0000-0x000000001CB08000-memory.dmp
memory/5036-95-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/404-96-0x0000000019930000-0x0000000019940000-memory.dmp
memory/1148-97-0x000000001CDF0000-0x000000001CFB2000-memory.dmp
memory/1148-98-0x000000001CC10000-0x000000001CC20000-memory.dmp
memory/1148-99-0x00007FFE31E30000-0x00007FFE328F1000-memory.dmp
memory/1148-100-0x000000001B550000-0x000000001B560000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\WSupdate.exe
| MD5 | 913967b216326e36a08010fb70f9dba3 |
| SHA1 | 7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf |
| SHA256 | 8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a |
| SHA512 | c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33 |
memory/1148-112-0x000000001B550000-0x000000001B560000-memory.dmp
memory/1696-115-0x00000000744C0000-0x0000000074C70000-memory.dmp
memory/1696-116-0x0000000000B90000-0x0000000000B98000-memory.dmp
memory/1148-117-0x000000001B550000-0x000000001B560000-memory.dmp
memory/4272-119-0x00000000744C0000-0x0000000074C70000-memory.dmp
memory/1696-121-0x00000000744C0000-0x0000000074C70000-memory.dmp
memory/4272-122-0x00000000744C0000-0x0000000074C70000-memory.dmp