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| File name: | build.exe |
| Full analysis: | https://app.any.run/tasks/0747ec5e-3eb8-4180-940d-3c7092469802 |
| 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: | May 20, 2022, 19:50:59 |
| 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: | 40251A6DA252D87FB6F44390A0D54583 |
| SHA1: | C122A4689D364306B2213B5DAD2ABA4FC5422178 |
| SHA256: | 4773E1E37F746E3B3B5CB1BD27E8ED20E2AD7440AC0220645EC7473ABF8DA26B |
| SSDEEP: | 24576:e6A4MROxnFt3V9MQErZlI0AilFEvxHi5Qc3:e6jMijIzrZlI0AilFEvxHi |
MALICIOUS
Starts Visual C# compiler
- build.exe (PID: 2532)
Drops executable file immediately after starts
- csc.exe (PID: 3220)
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
ORCUS was detected
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
- javaUpdate.exe (PID: 1544)
- Watchdog.exe (PID: 3268)
Changes the autorun value in the registry
- javaUpdate.exe (PID: 668)
Loads the Task Scheduler COM API
- javaUpdate.exe (PID: 668)
Application was dropped or rewritten from another process
- Watchdog.exe (PID: 3268)
- Watchdog.exe (PID: 2552)
SUSPICIOUS
Checks supported languages
- build.exe (PID: 2532)
- cvtres.exe (PID: 3488)
- csc.exe (PID: 3220)
- javaUpdate.exe (PID: 668)
- javaUpdate.exe (PID: 1544)
- Watchdog.exe (PID: 3268)
- Watchdog.exe (PID: 2552)
Executable content was dropped or overwritten
- csc.exe (PID: 3220)
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
Reads the computer name
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
- javaUpdate.exe (PID: 1544)
- Watchdog.exe (PID: 2552)
- Watchdog.exe (PID: 3268)
Creates files in the user directory
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
Drops a file with a compile date too recent
- csc.exe (PID: 3220)
- build.exe (PID: 2532)
- javaUpdate.exe (PID: 668)
Starts itself from another location
- build.exe (PID: 2532)
Executed via Task Scheduler
- javaUpdate.exe (PID: 1544)
Application launched itself
- Watchdog.exe (PID: 3268)
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: | 0xe767e |
| UninitializedDataSize: | - |
| InitializedDataSize: | 4608 |
| CodeSize: | 940032 |
| LinkerVersion: | 8 |
| PEType: | PE32 |
| TimeStamp: | 2022:05:20 21:50:44+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 20-May-2022 19:50:44 |
| 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: | 20-May-2022 19:50:44 |
| 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 | 0x000E5684 | 0x000E5800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.17157 |
.rsrc | 0x000E8000 | 0x00001000 | 0x00001000 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.99502 |
.reloc | 0x000EA000 | 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
40
Monitored processes
7
Malicious processes
5
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 2532 | "C:\Users\admin\AppData\Local\Temp\build.exe" | C:\Users\admin\AppData\Local\Temp\build.exe | Explorer.EXE | |
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 | ||||
| 3220 | "C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\admin\AppData\Local\Temp\7bexnjq8.cmdline" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\csc.exe | build.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) | ||||
| 3488 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\admin\AppData\Local\Temp\RES4FD8.tmp" "c:\Users\admin\AppData\Local\Temp\CSC4FD7.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) | ||||
| 668 | "C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe" | C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe | build.exe | |
User: admin Integrity Level: MEDIUM Version: 1.0.0.0 | ||||
| 1544 | C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe | C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe | taskeng.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 | ||||
| 3268 | "C:\Users\admin\AppData\Roaming\Watchdog.exe" /launchSelfAndExit "C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe" 668 /protectFile | C:\Users\admin\AppData\Roaming\Watchdog.exe | javaUpdate.exe | |
User: admin Integrity Level: MEDIUM Exit code: 2552 Version: 1.0.0.0 | ||||
| 2552 | "C:\Users\admin\AppData\Roaming\Watchdog.exe" /watchProcess "C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe" 668 "/protectFile" | C:\Users\admin\AppData\Roaming\Watchdog.exe | — | Watchdog.exe |
User: admin Integrity Level: MEDIUM Version: 1.0.0.0 | ||||
Total events
2 746
Read events
2 721
Write events
25
Delete events
0
Modification events
| (PID) Process: | (2532) build.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (2532) build.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (2532) build.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (2532) build.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (668) javaUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows |
| Operation: | write | Name: | Load |
Value: C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe | |||
| (PID) Process: | (668) javaUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
| (PID) Process: | (668) javaUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | IntranetName |
Value: 1 | |||
| (PID) Process: | (668) javaUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 1 | |||
| (PID) Process: | (668) javaUpdate.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 0 | |||
| (PID) Process: | (3268) Watchdog.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | ProxyBypass |
Value: 1 | |||
Executable files
3
Suspicious files
0
Text files
5
Unknown types
2
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3220 | csc.exe | C:\Users\admin\AppData\Local\Temp\CSC4FD7.tmp | res | |
MD5:493FEF787CF2824177C9F876AD4C2224 | SHA256:7BF518C97FAB3CCB6283B8D2759B5C0220F4DA73409F13F266F289EED0BD3A4F | |||
| 2532 | build.exe | C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe | executable | |
MD5:40251A6DA252D87FB6F44390A0D54583 | SHA256:4773E1E37F746E3B3B5CB1BD27E8ED20E2AD7440AC0220645EC7473ABF8DA26B | |||
| 2532 | build.exe | C:\Users\admin\AppData\Local\Temp\7bexnjq8.cmdline | text | |
MD5:4F55FAFDE166B4D7384246ED8389621E | SHA256:E5B846E39C8E1D54C5F5BAC3E29D489E4BFE795B030545446FCDCDD52CDDDC01 | |||
| 3488 | cvtres.exe | C:\Users\admin\AppData\Local\Temp\RES4FD8.tmp | o | |
MD5:22A5DE8D486025489B746092C81E43F0 | SHA256:D110ECD5D13C1EA47FA685DA0EBAEBB1D4BD9A9C20A871C596CD5D4CBC4FFFA5 | |||
| 3220 | csc.exe | C:\Users\admin\AppData\Local\Temp\7bexnjq8.out | text | |
MD5:7CEB399BC1435AA7179AC95A696EAE9D | SHA256:104FB0F512880B4871F2B14C5DB81B7EA2D134189AADD62ADAB5E67513A26574 | |||
| 2532 | build.exe | C:\Users\admin\AppData\Local\Temp\7bexnjq8.0.cs | text | |
MD5:A05E1FA6A9CD4F1185B77B58ACD74CB7 | SHA256:CD3BD89D54A4DB90D00B07B85BD8BAE7F1D99E830F8AE08F0FEDA276E8D5E436 | |||
| 3220 | csc.exe | C:\Users\admin\AppData\Local\Temp\7bexnjq8.dll | executable | |
MD5:21451A710960C8D626D146BEEF49FE37 | SHA256:C26F548E9B127EF9C88DC7D9FFEBC6D8444E0CB85643486689FA1D2840CF4C16 | |||
| 668 | javaUpdate.exe | C:\Users\admin\AppData\Roaming\Watchdog.exe | executable | |
MD5:913967B216326E36A08010FB70F9DBA3 | SHA256:8D880758549220154D2FF4EE578F2B49527C5FB76A07D55237B61E30BCC09E3A | |||
| 2532 | build.exe | C:\Users\admin\AppData\Roaming\Java\javaUpdate.exe.config | xml | |
MD5:A2B76CEA3A59FA9AF5EA21FF68139C98 | SHA256:F99EF5BF79A7C43701877F0BB0B890591885BB0A3D605762647CC8FFBF10C839 | |||
| 668 | javaUpdate.exe | C:\Users\admin\AppData\Roaming\Watchdog.exe.config | xml | |
MD5:A2B76CEA3A59FA9AF5EA21FF68139C98 | SHA256:F99EF5BF79A7C43701877F0BB0B890591885BB0A3D605762647CC8FFBF10C839 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
5
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 |
|---|---|---|---|---|---|---|
— | — | 192.168.100.191:59630 | — | — | — | malicious |
— | — | 192.168.100.191:59433 | — | — | — | malicious |
— | — | 192.168.100.191:59824 | — | — | — | malicious |
— | — | 192.168.100.191:60219 | — | — | — | malicious |
— | — | 192.168.100.191:60021 | — | — | — | malicious |