Analysis Overview
SHA256
3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac
Threat Level: Known bad
The file 3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe was found to be: Known bad.
Malicious Activity Summary
Orcurs Rat Executable
Orcus family
Orcus main payload
Drops desktop.ini file(s)
Drops file in Windows directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2024-01-01 20:04
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
2024-01-01 20:04
Reported
2024-01-01 20:07
Platform
win7-20231215-en
Max time kernel
148s
Max time network
152s
Command Line
Signatures
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe
"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.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\0v9qafiv.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\RES424F.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC424E.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | openport.io | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
Files
memory/2968-1-0x0000000000940000-0x000000000094E000-memory.dmp
memory/2968-0-0x000000001AFB0000-0x000000001B00C000-memory.dmp
memory/2968-3-0x0000000000510000-0x0000000000590000-memory.dmp
memory/2968-2-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp
memory/2968-4-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp
memory/2968-17-0x000000001B020000-0x000000001B036000-memory.dmp
memory/2968-21-0x000000001B010000-0x000000001B018000-memory.dmp
memory/2968-20-0x00000000020B0000-0x00000000020B8000-memory.dmp
memory/2968-19-0x00000000009F0000-0x0000000000A02000-memory.dmp
memory/2968-22-0x0000000000510000-0x0000000000590000-memory.dmp
memory/2968-24-0x0000000000510000-0x0000000000590000-memory.dmp
memory/2968-25-0x000000001B0A0000-0x000000001B0B8000-memory.dmp
memory/2968-27-0x0000000000510000-0x0000000000590000-memory.dmp
memory/2968-26-0x0000000002050000-0x0000000002060000-memory.dmp
memory/2968-29-0x0000000000510000-0x0000000000590000-memory.dmp
memory/2968-28-0x000007FEF57A0000-0x000007FEF613D000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-01 20:04
Reported
2024-01-01 20:07
Platform
win10v2004-20231215-en
Max time kernel
172s
Max time network
186s
Command Line
Signatures
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File created | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.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\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
| File opened for modification | C:\Windows\assembly\Desktop.ini | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
| File opened for modification | C:\Windows\assembly | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3952 wrote to memory of 1232 | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 3952 wrote to memory of 1232 | N/A | C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe |
| PID 1232 wrote to memory of 1140 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
| PID 1232 wrote to memory of 1140 | N/A | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe | C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.exe
"C:\Users\Admin\AppData\Local\Temp\3fa94387a1ff3c76b7b414cfb51457e28ac0493c1de2739d6c39e37e9602deac.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\7yg1tqru.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\RESFC43.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCFC42.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 146.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 49.179.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.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 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.160.77.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | openport.io | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| US | 8.8.8.8:53 | 167.109.18.2.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| 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 |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| US | 8.8.8.8:53 | 183.1.37.23.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.179.17.96.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| US | 8.8.8.8:53 | 150.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.73.42.20.in-addr.arpa | udp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
| NL | 95.85.25.182:20910 | openport.io | tcp |
Files
memory/3952-0-0x00007FF8BCC30000-0x00007FF8BD5D1000-memory.dmp
memory/3952-1-0x00007FF8BCC30000-0x00007FF8BD5D1000-memory.dmp
memory/3952-2-0x0000000000EE0000-0x0000000000EF0000-memory.dmp
memory/3952-3-0x000000001B410000-0x000000001B46C000-memory.dmp
memory/3952-6-0x000000001B500000-0x000000001B50E000-memory.dmp
memory/3952-7-0x000000001BAF0000-0x000000001BFBE000-memory.dmp
memory/3952-8-0x000000001C060000-0x000000001C0FC000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\7yg1tqru.cmdline
| MD5 | bc12ecd53fc0136bd27eeccfd2209480 |
| SHA1 | 54b0dae07ea7e500ac21e093aa69bde802497c1c |
| SHA256 | 827ce107c126e8c10348c01bce7c3d36bfdb27ed8587a977c4d9aca2ebf3f424 |
| SHA512 | ce759e1390b666cfb0a0749ee15da6bddf6a8fc257e8d5e2c19197eed3f22cf52973a092adcc8caa865df68a99ae3be2d20feb4d9f115ad7f8391cf82a084637 |
\??\c:\Users\Admin\AppData\Local\Temp\7yg1tqru.0.cs
| MD5 | dea383b3c8a377d743512736f9f4b9d1 |
| SHA1 | c6df4eb9698e8fa0173f1226459b2efb56928d13 |
| SHA256 | 4f262123b5433f5389f86282c41c5932ef897dffdbb033616954bee77aeae03a |
| SHA512 | 43166c19d2fdf29cc2656289f6835224c085d570d119a5359002bb924edac25a2957e68a236da0fdb09dd3917d4c57dbbb040b2cd07b3dc848fb3fde95c8fbc4 |
memory/1232-14-0x0000000002380000-0x0000000002390000-memory.dmp
memory/3952-22-0x000000001C710000-0x000000001C726000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\7yg1tqru.dll
| MD5 | 1e7af68aa0ab176a0962074eb83259b2 |
| SHA1 | 7bf984ff0856ecd4ce7e905a964580ece2dc700b |
| SHA256 | 1f510f3d02fe467785e8c12c4786b9e62a1079194da2de558bef11e2e070ab03 |
| SHA512 | 7ca8b4f3e0c7c53d488aab5cb42e88fa92c98f07c2c10f9849853cd5322f1fcf402a13283ddd8752486127a6526e10a67b1d531f64ef7f03f7e03e4213970386 |
C:\Users\Admin\AppData\Local\Temp\RESFC43.tmp
| MD5 | b574f85dafe903e030eb76e13360edd5 |
| SHA1 | cccf987b6ed36fd33650f80aff9bcdd1a4c7b0a8 |
| SHA256 | 7ffd8fb6bce005914bf3218c4543706ec6e325935c028f1b39b1f73deebb24c2 |
| SHA512 | a0a69c382acbe95997ffab887a31b82cff4e676ef8cc5b56b7e68d1da034d6c3b3515b64d4f1579626dc3a6e6277f3dec21a66d25ef0678b8435ba5f3847c837 |
\??\c:\Users\Admin\AppData\Local\Temp\CSCFC42.tmp
| MD5 | 6bde3e6306b0fa8c9f81789346d09f67 |
| SHA1 | 7bc81e285b22339d118826931e26b0fce2acedfe |
| SHA256 | 30a3425948788875e33f1cf5297c6810d53a5e471d06e4e51905e15e229e6cbb |
| SHA512 | e003864524182d14724558dd34d49e19190c82ffcfab3e3a711af123bf502634d63875a762047cdedcc0f0b33d9fa5d6a853c14bd9d9700ab13196e9352b6152 |
memory/3952-24-0x0000000000E30000-0x0000000000E42000-memory.dmp
memory/3952-26-0x000000001B400000-0x000000001B408000-memory.dmp
memory/3952-27-0x000000001CB00000-0x000000001CB62000-memory.dmp
memory/3952-25-0x0000000000E10000-0x0000000000E18000-memory.dmp
memory/3952-28-0x000000001D460000-0x000000001DA1A000-memory.dmp
memory/3952-30-0x000000001CC60000-0x000000001CC7E000-memory.dmp
memory/3952-29-0x000000001DA20000-0x000000001DB10000-memory.dmp
memory/3952-31-0x000000001DB20000-0x000000001DB69000-memory.dmp
memory/3952-32-0x0000000000EE0000-0x0000000000EF0000-memory.dmp
memory/3952-33-0x000000001DC00000-0x000000001DC70000-memory.dmp
memory/3952-34-0x0000000000EE0000-0x0000000000EF0000-memory.dmp
memory/3952-36-0x000000001DEB0000-0x000000001DEC8000-memory.dmp
memory/3952-37-0x0000000000DF0000-0x0000000000E00000-memory.dmp
memory/3952-38-0x000000001CC90000-0x000000001CC98000-memory.dmp
memory/3952-39-0x00007FF8BCC30000-0x00007FF8BD5D1000-memory.dmp
memory/3952-40-0x00007FF8BCC30000-0x00007FF8BD5D1000-memory.dmp
memory/3952-41-0x0000000000EE0000-0x0000000000EF0000-memory.dmp
memory/3952-42-0x0000000000EE0000-0x0000000000EF0000-memory.dmp