Analysis Overview
SHA256
509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0
Threat Level: Known bad
The file 509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0 was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus main payload
Orcus family
Orcus
Orcurs Rat Executable
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Drops file in System32 directory
Drops file in Program Files directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Uses Task Scheduler COM API
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-06 01:06
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
2024-01-06 01:06
Reported
2024-01-06 01:09
Platform
win7-20231129-en
Max time kernel
149s
Max time network
147s
Command Line
Signatures
Orcus
Orcurs Rat Executable
| Description | Indicator | Process | Target |
| 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\Orcus\Orcus.exe | N/A |
| N/A | N/A | C:\Program Files\Orcus\Orcus.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\java.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\java.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\java.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "\"C:\\Program Files\\Orcus\\Orcus.exe\"" | C:\Program Files\Orcus\Orcus.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\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.exe | N/A |
| File created | C:\Windows\SysWOW64\WindowsInput.exe.config | C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.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\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.exe | N/A |
| File opened for modification | C:\Program Files\Orcus\Orcus.exe | C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.exe | N/A |
| File created | C:\Program Files\Orcus\Orcus.exe.config | C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.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\Orcus\Orcus.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\java.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\java.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Orcus\Orcus.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.exe
"C:\Users\Admin\AppData\Local\Temp\509cfaac45f23bf4bba6fd9f0a631d483d44c04930eeb5a3e68f3badcbd9bba0.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\76shxxts.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\RES81D.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC81C.tmp"
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe" --install
C:\Windows\SysWOW64\WindowsInput.exe
"C:\Windows\SysWOW64\WindowsInput.exe"
C:\Program Files\Orcus\Orcus.exe
"C:\Program Files\Orcus\Orcus.exe"
C:\Program Files\Orcus\Orcus.exe
"C:\Program Files\Orcus\Orcus.exe"
C:\Users\Admin\AppData\Roaming\java.exe
"C:\Users\Admin\AppData\Roaming\java.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 3040 /protectFile
C:\Users\Admin\AppData\Roaming\java.exe
"C:\Users\Admin\AppData\Roaming\java.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 3040 "/protectFile"
C:\Windows\system32\taskeng.exe
taskeng.exe {EAFDFA8A-6FD6-4A2E-A43F-26FCDEC229F2} S-1-5-21-3470981204-343661084-3367201002-1000:GLTGRJAG\Admin:Interactive:[1]
Network
| Country | Destination | Domain | Proto |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp | |
| N/A | 10.0.2.15:4444 | tcp |
Files
memory/2908-0-0x0000000000A40000-0x0000000000A9C000-memory.dmp
memory/2908-1-0x0000000000410000-0x000000000041E000-memory.dmp
memory/2908-2-0x000007FEF5CD0000-0x000007FEF666D000-memory.dmp
memory/2908-3-0x0000000000AF0000-0x0000000000B70000-memory.dmp
memory/2416-10-0x0000000002260000-0x00000000022E0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\RES81D.tmp
| MD5 | e51a2a1102175a33176bcde6a933eea2 |
| SHA1 | 3f691078c1f03e01c48e096002d8ccc000967503 |
| SHA256 | 6a1cd6214f81d0bc822bae52829e777715244493bfd516cabd5695747d07500f |
| SHA512 | 11389b4cd234ec061d816cc6f1f3969919a2a27dd2421da25f4ad8e44640147904068e18a524f2f2c243b29f5bb0962e39eae8f5324a2e461db8ba03109665ef |
memory/2908-18-0x0000000000AA0000-0x0000000000AB6000-memory.dmp
memory/2908-21-0x00000000009F0000-0x00000000009F8000-memory.dmp
memory/2908-22-0x0000000000A20000-0x0000000000A28000-memory.dmp
memory/2908-20-0x0000000000440000-0x0000000000452000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\76shxxts.dll
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
\??\c:\Users\Admin\AppData\Local\Temp\CSC81C.tmp
| MD5 | e347f080350d2dad32fa1d0b4ba54534 |
| SHA1 | 76ca812a4b85a41401ceb3efc2ce372424132bf2 |
| SHA256 | 759f726f469ad978ceff29e9952a50004db4efc983d7a92b2eab77e48fc6381a |
| SHA512 | a7a8d65872d955a20dff0da2c2c46c9366d647339608afe912756c193c9a7abdd10ccb81609d5f9b178df5aece29109b04c6f0629d52dc87a227b1f3aa3549bf |
\??\c:\Users\Admin\AppData\Local\Temp\76shxxts.0.cs
| MD5 | 6011503497b1b9250a05debf9690e52c |
| SHA1 | 897aea61e9bffc82d7031f1b3da12fb83efc6d82 |
| SHA256 | 08f42b8d57bb61bc8f9628c8a80953b06ca4149d50108083fca6dc26bdd49434 |
| SHA512 | 604c33e82e8b5bb5c54389c2899c81e5482a06e69db08268173a5b4574327ee5de656d312011d07e50a2e398a4c9b0cd79029013f76e05e18cf67ce5a916ffd9 |
memory/2908-26-0x0000000000AF0000-0x0000000000B70000-memory.dmp
memory/2864-32-0x00000000009C0000-0x00000000009CC000-memory.dmp
memory/2864-33-0x000007FEED900000-0x000007FEEE2EC000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\76shxxts.cmdline
| MD5 | d17b3bf59f9795cb220fdf3ebd53a0a0 |
| SHA1 | a9ed88cdb10e2e4053a8944dd5a189928623e56a |
| SHA256 | c86f7d1966802f70356b8bb87ddcf7d7dece2efb3e4b20409e8a854ef05c8229 |
| SHA512 | b135ad2e2f16997673fa146ea9dd72ea0cb808f690b713084eac3e394c1b67096da91f2d6d4261f871c05fbd6d5b18f3a4f35ca3c6ce373222f9efef4371c5bb |
memory/2908-4-0x000007FEF5CD0000-0x000007FEF666D000-memory.dmp
memory/2580-38-0x00000000000A0000-0x00000000000AC000-memory.dmp
memory/2580-39-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/2864-36-0x000007FEED900000-0x000007FEEE2EC000-memory.dmp
memory/3040-50-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/3040-51-0x00000000023D0000-0x0000000002450000-memory.dmp
memory/2908-49-0x000007FEF5CD0000-0x000007FEF666D000-memory.dmp
memory/3040-48-0x0000000000960000-0x0000000000A4E000-memory.dmp
memory/3040-54-0x00000000020F0000-0x000000000213E000-memory.dmp
memory/3040-55-0x0000000002350000-0x0000000002368000-memory.dmp
memory/3040-56-0x0000000002380000-0x0000000002390000-memory.dmp
memory/3040-58-0x00000000023D0000-0x0000000002450000-memory.dmp
memory/1528-69-0x0000000001200000-0x0000000001208000-memory.dmp
memory/1528-70-0x0000000074B60000-0x000000007524E000-memory.dmp
memory/2984-74-0x0000000074B60000-0x000000007524E000-memory.dmp
memory/1528-73-0x0000000074B60000-0x000000007524E000-memory.dmp
memory/2776-65-0x000000001AE10000-0x000000001AE90000-memory.dmp
memory/2776-62-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/2776-75-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/2580-76-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/3040-77-0x000007FEECF10000-0x000007FEED8FC000-memory.dmp
memory/3040-78-0x00000000023D0000-0x0000000002450000-memory.dmp
memory/3040-79-0x00000000023D0000-0x0000000002450000-memory.dmp
memory/2984-80-0x0000000074B60000-0x000000007524E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-06 01:06
Reported
2024-01-06 01:09
Platform
win10v2004-20231222-en