| File name: | Teroser.exe |
| Full analysis: | https://app.any.run/tasks/ca86fdb4-924e-45d8-b1a9-98c517c92ad7 |
| Verdict: | Malicious activity |
| Threats: | Orcus is a modular Remote Access Trojan with some unusual functions. This RAT enables attackers to create plugins using a custom development library and offers a robust core feature set that makes it one of the most dangerous malicious programs in its class. |
| Analysis date: | July 13, 2021, 21:02:22 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | CFE70FBF838F68A7C601B50CA96B2E74 |
| SHA1: | 8FFBCE176E7D7C79F5556B27DBA36221DCB35FA8 |
| SHA256: | ACC5C0E01F5365667602B854245178EF332DAB323EDCE4610C30CDBB72E49D13 |
| SSDEEP: | 12288:6+1gSBMAbajsWR027dG1lFlWcYT70pxnnaaoawqRVcTqSA+9rZNrI0AilFEvxHv9:oQW4MROxnFDLqrZlI0AilFEvxHiDW |
MALICIOUS
ORCUS was detected
- Teroser.exe (PID: 1072)
- Teroser.exe (PID: 3244)
- Orcus.exe (PID: 2236)
Starts Visual C# compiler
- Teroser.exe (PID: 1072)
- Teroser.exe (PID: 3244)
Drops executable file immediately after starts
- csc.exe (PID: 2264)
- csc.exe (PID: 3800)
Changes the autorun value in the registry
- Orcus.exe (PID: 2236)
SUSPICIOUS
Executable content was dropped or overwritten
- csc.exe (PID: 2264)
- csc.exe (PID: 3800)
- Teroser.exe (PID: 3244)
Checks supported languages
- cvtres.exe (PID: 2296)
- Teroser.exe (PID: 3244)
- Teroser.exe (PID: 1072)
- csc.exe (PID: 2264)
- csc.exe (PID: 3800)
- cvtres.exe (PID: 2808)
- Orcus.exe (PID: 2236)
Application launched itself
- Teroser.exe (PID: 1072)
Drops a file with a compile date too recent
- csc.exe (PID: 2264)
- csc.exe (PID: 3800)
- Teroser.exe (PID: 3244)
Reads the computer name
- Teroser.exe (PID: 1072)
- Teroser.exe (PID: 3244)
- Orcus.exe (PID: 2236)
Creates files in the program directory
- Teroser.exe (PID: 3244)
Starts itself from another location
- Teroser.exe (PID: 3244)
Creates a directory in Program Files
- Teroser.exe (PID: 3244)
INFO
No info indicators.
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| AssemblyVersion: | 1.0.0.0 |
|---|---|
| ProductVersion: | 1.0.0.0 |
| ProductName: | - |
| OriginalFileName: | Orcus.exe |
| LegalTrademarks: | - |
| LegalCopyright: | - |
| InternalName: | Orcus.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | - |
| CompanyName: | - |
| Comments: | - |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0xe299e |
| UninitializedDataSize: | - |
| InitializedDataSize: | 4608 |
| CodeSize: | 920064 |
| LinkerVersion: | 8 |
| PEType: | PE32 |
| TimeStamp: | 2021:07:13 22:59:51+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 13-Jul-2021 20:59:51 |
| Comments: | - |
| CompanyName: | - |
| FileDescription: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | Orcus.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFilename: | Orcus.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| Assembly Version: | 1.0.0.0 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 13-Jul-2021 20:59:51 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x000E09A4 | 0x000E0A00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.14945 |
.rsrc | 0x000E4000 | 0x00001000 | 0x00001000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.99491 |
.reloc | 0x000E6000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.99793 | 3128 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
45
Monitored processes
7
Malicious processes
3
Suspicious processes
2
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1072 | "C:\Users\admin\Desktop\Teroser.exe" | C:\Users\admin\Desktop\Teroser.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2236 | "C:\Program Files\Orcus\Orcus.exe" | C:\Program Files\Orcus\Orcus.exe | Teroser.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 2264 | "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\lf5gyap9.cmdline" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe | Teroser.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Visual C# Command Line Compiler Exit code: 0 Version: 8.0.50727.5483 (Win7SP1GDR.050727-5400) Modules
| |||||||||||||||
| 2296 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RES2E29.tmp" "c:\Users\admin\AppData\Local\Temp\CSC2E28.tmp" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | — | csc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft� Resource File To COFF Object Conversion Utility Exit code: 0 Version: 8.00.50727.5003 (Win7SP1GDR.050727-5400) Modules
| |||||||||||||||
| 2808 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RES3647.tmp" "c:\Users\admin\AppData\Local\Temp\CSC3646.tmp" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe | — | csc.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Microsoft� Resource File To COFF Object Conversion Utility Exit code: 0 Version: 8.00.50727.5003 (Win7SP1GDR.050727-5400) Modules
| |||||||||||||||
| 3244 | "C:\Users\admin\Desktop\Teroser.exe" /wait | C:\Users\admin\Desktop\Teroser.exe | Teroser.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3800 | "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\mdra5hum.cmdline" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe | Teroser.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Visual C# Command Line Compiler Exit code: 0 Version: 8.0.50727.5483 (Win7SP1GDR.050727-5400) Modules
| |||||||||||||||
Total events
900
Read events
883
Write events
17
Delete events
0
Modification events
| (PID) Process: | (1072) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (1072) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (1072) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (1072) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (3244) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (3244) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (3244) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (3244) Teroser.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (2236) Orcus.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Windows Update |
Value: "C:\Program Files\Orcus\Orcus.exe" | |||
Executable files
3
Suspicious files
0
Text files
7
Unknown types
4
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2296 | cvtres.exe | C:\Users\admin\AppData\Local\Temp\RES2E29.tmp | o | |
MD5:— | SHA256:— | |||
| 2264 | csc.exe | C:\Users\admin\AppData\Local\Temp\lf5gyap9.out | text | |
MD5:— | SHA256:— | |||
| 2264 | csc.exe | C:\Users\admin\AppData\Local\Temp\CSC2E28.tmp | res | |
MD5:— | SHA256:— | |||
| 2264 | csc.exe | C:\Users\admin\AppData\Local\Temp\lf5gyap9.dll | executable | |
MD5:— | SHA256:— | |||
| 1072 | Teroser.exe | C:\Users\admin\AppData\Local\Temp\lf5gyap9.cmdline | text | |
MD5:— | SHA256:— | |||
| 3244 | Teroser.exe | C:\Users\admin\AppData\Local\Temp\mdra5hum.cmdline | text | |
MD5:— | SHA256:— | |||
| 1072 | Teroser.exe | C:\Users\admin\AppData\Local\Temp\lf5gyap9.0.cs | text | |
MD5:— | SHA256:— | |||
| 3800 | csc.exe | C:\Users\admin\AppData\Local\Temp\CSC3646.tmp | res | |
MD5:— | SHA256:— | |||
| 3800 | csc.exe | C:\Users\admin\AppData\Local\Temp\mdra5hum.dll | executable | |
MD5:— | SHA256:— | |||
| 2808 | cvtres.exe | C:\Users\admin\AppData\Local\Temp\RES3647.tmp | o | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
3
DNS requests
0
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
— | — | 192.168.100.209:50271 | — | — | — | malicious |
— | — | 192.168.100.209:50639 | — | — | — | malicious |
— | — | 192.168.100.209:49909 | — | — | — | malicious |