Analysis Overview
SHA256
32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801
Threat Level: Known bad
The file 32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801 was found to be: Known bad.
Malicious Activity Summary
Orcus family
Orcus main payload
Orcurs Rat Executable
Orcus
Orcurs Rat Executable
Executes dropped EXE
Loads dropped DLL
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: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-08 01:12
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
2024-01-08 01:12
Reported
2024-01-08 01:15
Platform
win7-20231215-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
Orcus
Orcus main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| 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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | 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:\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 |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\WSupdate.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\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\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.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 created | C:\Program Files\WSupdate\WSupdate.exe | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
| File opened for modification | C:\Program Files\WSupdate\WSupdate.exe | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
| File created | C:\Program Files\WSupdate\WSupdate.exe.config | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| 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\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe
"C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.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:\Windows\system32\taskeng.exe
taskeng.exe {2184B0A0-817C-40D8-A71C-571B5775B00E} S-1-5-21-928733405-3780110381-2966456290-1000:VTILVGXH\Admin:Interactive:[1]
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" 2228 /protectFile
C:\Users\Admin\AppData\Local\Temp\WSupdate.exe
"C:\Users\Admin\AppData\Local\Temp\WSupdate.exe" /watchProcess "C:\Program Files\WSupdate\WSupdate.exe" 2228 "/protectFile"
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.219.110:10134 | tcp | |
| 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 |
| N/A | 192.168.219.110:10134 | tcp | |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
| N/A | 192.168.219.174:8080 | nonamedc.mcv.kr | tcp |
| N/A | 192.168.219.110:10134 | tcp | |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
| N/A | 192.168.219.174:8080 | nonamedc.mcv.kr | tcp |
| N/A | 192.168.219.110:10134 | tcp | |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
Files
memory/1744-0-0x0000000001340000-0x000000000142E000-memory.dmp
memory/1744-1-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/1744-2-0x000000001AF10000-0x000000001AF90000-memory.dmp
memory/1744-3-0x000000001AB00000-0x000000001AB5C000-memory.dmp
memory/1744-4-0x00000000001D0000-0x00000000001DE000-memory.dmp
memory/1744-5-0x0000000000410000-0x0000000000422000-memory.dmp
memory/1744-6-0x0000000000400000-0x0000000000408000-memory.dmp
memory/1744-7-0x0000000000420000-0x0000000000428000-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/2716-16-0x0000000000F30000-0x0000000000F3C000-memory.dmp
memory/2716-17-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2716-18-0x000000001B160000-0x000000001B1E0000-memory.dmp
memory/2716-21-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2648-23-0x00000000003F0000-0x00000000003FC000-memory.dmp
memory/2648-25-0x0000000019C10000-0x0000000019C90000-memory.dmp
memory/2648-24-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2228-34-0x0000000000820000-0x000000000090E000-memory.dmp
memory/2228-36-0x000000001AF90000-0x000000001B010000-memory.dmp
memory/2228-37-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/1744-35-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
C:\Program Files\WSupdate\WSupdate.exe
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Program Files\WSupdate\WSupdate.exe
| MD5 | b62c7876b51fddcb6802831a8c05999e |
| SHA1 | eca7e0b22bc9f1bb17fb3572fb63962578b45679 |
| SHA256 | 219a1b487f314edd218ba31acc826e9d4c90ea1a23322bf5e2143e4ffe13f83a |
| SHA512 | 703108c8d3fc1e85cee312bc7dc0f4d7c3c5ec7ed1ebcb0a5cb1f12daf8f301017527e6f22836d7f0580ac25e1a3c663f548ebad556c59eb521df75eeec45873 |
memory/2228-40-0x00000000007B0000-0x00000000007FE000-memory.dmp
memory/2228-41-0x0000000002040000-0x0000000002058000-memory.dmp
memory/2228-42-0x00000000020F0000-0x0000000002100000-memory.dmp
memory/2228-48-0x000000001AF90000-0x000000001B010000-memory.dmp
memory/472-47-0x000000001B260000-0x000000001B2E0000-memory.dmp
memory/472-44-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2028-55-0x00000000011D0000-0x00000000011D8000-memory.dmp
memory/2028-56-0x0000000074000000-0x00000000746EE000-memory.dmp
memory/2028-59-0x0000000074000000-0x00000000746EE000-memory.dmp
memory/1936-60-0x0000000074000000-0x00000000746EE000-memory.dmp
memory/472-61-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2648-62-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2648-63-0x0000000019C10000-0x0000000019C90000-memory.dmp
memory/2228-64-0x000000001AF90000-0x000000001B010000-memory.dmp
memory/2228-65-0x000007FEF54D0000-0x000007FEF5EBC000-memory.dmp
memory/2228-66-0x000000001AF90000-0x000000001B010000-memory.dmp
memory/1936-67-0x0000000074000000-0x00000000746EE000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-08 01:12
Reported
2024-01-08 01:14
Platform
win10v2004-20231222-en
Max time kernel
0s
Max time network
148s
Command Line
Signatures
Orcus
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\WindowsInput.exe | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe | N/A |
Enumerates physical storage devices
Processes
C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe
"C:\Users\Admin\AppData\Local\Temp\32fb6efc9f3f4901cec09eba19168797147e91bff1cae8deadb84cf60c020801.exe"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
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" 4108 /protectFile
C:\Users\Admin\AppData\Local\Temp\WSupdate.exe
"C:\Users\Admin\AppData\Local\Temp\WSupdate.exe" /watchProcess "C:\Program Files\WSupdate\WSupdate.exe" 4108 "/protectFile"
C:\Program Files\WSupdate\WSupdate.exe
"C:\Program Files\WSupdate\WSupdate.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.219.110:10134 | tcp | |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.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 |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| N/A | 192.168.219.174:8080 | nonamedc.mcv.kr | tcp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| N/A | 192.168.219.110:10134 | tcp | |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
| 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 | 19.229.111.52.in-addr.arpa | 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 | 57.169.31.20.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 |
| N/A | 192.168.219.174:80 | nonamedc.mcv.kr | tcp |
| US | 8.8.8.8:53 | 14.173.189.20.in-addr.arpa | udp |
Files
memory/1552-0-0x0000000000BB0000-0x0000000000C9E000-memory.dmp
memory/1552-1-0x000000001B7D0000-0x000000001B82C000-memory.dmp
memory/1552-4-0x000000001BA70000-0x000000001BA80000-memory.dmp
memory/1552-3-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/1552-5-0x0000000002E40000-0x0000000002E52000-memory.dmp
memory/1552-10-0x000000001BE90000-0x000000001BF9A000-memory.dmp
memory/1552-9-0x000000001B9A0000-0x000000001B9DC000-memory.dmp
memory/1552-8-0x000000001B830000-0x000000001B842000-memory.dmp
memory/1552-7-0x0000000002E50000-0x0000000002E58000-memory.dmp
memory/1552-6-0x0000000002D20000-0x0000000002D28000-memory.dmp
memory/1552-2-0x0000000002CF0000-0x0000000002CFE000-memory.dmp
C:\Windows\SysWOW64\WindowsInput.exe
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
memory/1228-25-0x0000000000FA0000-0x0000000000FAC000-memory.dmp
memory/1228-26-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/1640-32-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/1640-33-0x000000001A8B0000-0x000000001A8C0000-memory.dmp
memory/1228-30-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/4108-50-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/4108-51-0x0000000001800000-0x0000000001810000-memory.dmp
memory/1552-49-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/4108-54-0x000000001BC00000-0x000000001BC4E000-memory.dmp
memory/4108-56-0x000000001C720000-0x000000001C738000-memory.dmp
memory/4108-60-0x0000000001800000-0x0000000001810000-memory.dmp
memory/3116-63-0x000000001AED0000-0x000000001AEE0000-memory.dmp
memory/3264-75-0x00000000003D0000-0x00000000003D8000-memory.dmp
memory/3264-76-0x0000000074BC0000-0x0000000075370000-memory.dmp
memory/4108-59-0x000000001C850000-0x000000001C860000-memory.dmp
memory/4108-58-0x000000001CA80000-0x000000001CC42000-memory.dmp
memory/3116-57-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/3528-81-0x0000000074BC0000-0x0000000075370000-memory.dmp
memory/3264-80-0x0000000074BC0000-0x0000000075370000-memory.dmp
C:\Windows\SysWOW64\WindowsInput.exe
| MD5 | e6fcf516d8ed8d0d4427f86e08d0d435 |
| SHA1 | c7691731583ab7890086635cb7f3e4c22ca5e409 |
| SHA256 | 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337 |
| SHA512 | c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e |
memory/1640-82-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/3116-84-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/1640-85-0x000000001A8B0000-0x000000001A8C0000-memory.dmp
memory/4108-86-0x00007FFFDF190000-0x00007FFFDFC51000-memory.dmp
memory/4108-87-0x0000000001800000-0x0000000001810000-memory.dmp
memory/4108-88-0x0000000001800000-0x0000000001810000-memory.dmp
memory/3528-89-0x0000000074BC0000-0x0000000075370000-memory.dmp