| File name: | blackr41n.exe |
| Full analysis: | https://app.any.run/tasks/b650c656-ef93-4b9d-beda-fca459e73676 |
| 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: | December 14, 2018, 21:19:41 |
| 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: | 001D3097B6A586302C8CB79F11661316 |
| SHA1: | C2CEB5DCB75153A389BCCB48A8C44EBAC4825843 |
| SHA256: | 533F2267EF7B0ABE53EBE40FC0103BF093468672BCF0A7453A05E71CCD7751F7 |
| SSDEEP: | 24576:taAx2xqgI+XUzl1nE7JgPAhJ2sr7F75DZ0YraI0zBCYx1YBwZBCU8zoPstOos13N:rjnREzhJp52zB3uUW0PsnVMsjdV |
MALICIOUS
Uses Task Scheduler to run other applications
- blackr41n.exe (PID: 3104)
Loads the Task Scheduler COM API
- schtasks.exe (PID: 2276)
Orcus was detected
- Regasm.exe (PID: 3184)
- Regasm.exe (PID: 3324)
SUSPICIOUS
Executable content was dropped or overwritten
- blackr41n.exe (PID: 3104)
Creates files in the user directory
- blackr41n.exe (PID: 3104)
Connects to unusual port
- Regasm.exe (PID: 3184)
Starts itself from another location
- blackr41n.exe (PID: 3104)
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.) (45.1) |
|---|---|---|
| .exe | | | Win32 Executable MS Visual C++ (generic) (19.2) |
| .exe | | | Win64 Executable (generic) (17) |
| .scr | | | Windows screen saver (8) |
| .dll | | | Win32 Dynamic Link Library (generic) (4) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2018:12:14 18:43:58+01:00 |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 1856512 |
| InitializedDataSize: | 2560 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x1c73ee |
| OSVersion: | 4 |
| ImageVersion: | - |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 0.0.0.0 |
| ProductVersionNumber: | 0.0.0.0 |
| FileFlagsMask: | 0x003f |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | Neutral |
| CharacterSet: | Unicode |
| FileDescription: | |
| FileVersion: | 0.0.0.0 |
| InternalName: | blackr41n.exe |
| LegalCopyright: | |
| OriginalFileName: | blackr41n.exe |
| ProductVersion: | 0.0.0.0 |
| AssemblyVersion: | 0.0.0.0 |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 14-Dec-2018 17:43:58 |
| FileDescription: | - |
| FileVersion: | 0.0.0.0 |
| InternalName: | blackr41n.exe |
| LegalCopyright: | - |
| OriginalFilename: | blackr41n.exe |
| ProductVersion: | 0.0.0.0 |
| Assembly Version: | 0.0.0.0 |
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: | 4 |
| Time date stamp: | 14-Dec-2018 17:43:58 |
| 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 | 0x001C53F4 | 0x001C5400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.13947 |
.sdata | 0x001C8000 | 0x000000B1 | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE | 2.17582 |
.rsrc | 0x001CA000 | 0x000004D8 | 0x00000600 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.74001 |
.reloc | 0x001CC000 | 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 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
38
Monitored processes
6
Malicious processes
3
Suspicious processes
2
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 360 | C:\Users\admin\AppData\Roaming\SoundService.exe | C:\Users\admin\AppData\Roaming\SoundService.exe | — | taskeng.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: Exit code: 0 Version: 0.0.0.0 Modules
| |||||||||||||||
| 2276 | schtasks /create /f /sc minute /mo 1 /tn "'blackr41n'" /tr "'C:\Users\admin\AppData\Roaming\SoundService.exe'" | C:\Windows\system32\schtasks.exe | — | blackr41n.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) Modules
| |||||||||||||||
| 3104 | "C:\Users\admin\AppData\Local\Temp\blackr41n.exe" | C:\Users\admin\AppData\Local\Temp\blackr41n.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: Exit code: 0 Version: 0.0.0.0 Modules
| |||||||||||||||
| 3184 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe | SoundService.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 4.6.1055.0 built by: NETFXREL2 Modules
| |||||||||||||||
| 3324 | "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe | SoundService.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft .NET Assembly Registration Utility Exit code: 0 Version: 4.6.1055.0 built by: NETFXREL2 Modules
| |||||||||||||||
| 3716 | "C:\Users\admin\AppData\Roaming\SoundService.exe" | C:\Users\admin\AppData\Roaming\SoundService.exe | — | blackr41n.exe | |||||||||||
User: admin Integrity Level: MEDIUM Description: Exit code: 0 Version: 0.0.0.0 Modules
| |||||||||||||||
Total events
414
Read events
400
Write events
14
Delete events
0
Modification events
| (PID) Process: | (3104) blackr41n.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | UNCAsIntranet |
Value: 0 | |||
| (PID) Process: | (3104) blackr41n.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap |
| Operation: | write | Name: | AutoDetect |
Value: 1 | |||
| (PID) Process: | (3184) Regasm.exe | Key: | HKEY_CLASSES_ROOT\Local Settings\MuiCache\5F\52C64B7E |
| Operation: | write | Name: | LanguageList |
Value: en-US | |||
Executable files
1
Suspicious files
4
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Cab76B7.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Tar76B8.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Cab76D8.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Tar76D9.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Cab7738.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\Local\Temp\Tar7739.tmp | — | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 | binary | |
MD5:— | SHA256:— | |||
| 3104 | blackr41n.exe | C:\Users\admin\AppData\Roaming\SoundService.exe | executable | |
MD5:— | SHA256:— | |||
| 3184 | Regasm.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 | compressed | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
2
DNS requests
1
Threats
6
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
3184 | Regasm.exe | GET | 200 | 205.185.216.42:80 | http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab | US | compressed | 55.2 Kb | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
3184 | Regasm.exe | 103.1.184.108:54984 | — | TPG Telecom Limited | AU | malicious |
3184 | Regasm.exe | 205.185.216.42:80 | www.download.windowsupdate.com | Highwinds Network Group, Inc. | US | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
www.download.windowsupdate.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3184 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Observed Malicious SSL Certificate (Orcus RAT) |
3184 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Observed Malicious SSL Certificate (Orcus RAT) |
3184 | Regasm.exe | A Network Trojan was detected | MALWARE [PTsecurity] Malicious SSL connection (Orcus RAT) pkt checker #1 |
3184 | Regasm.exe | Generic Protocol Command Decode | SURICATA TLS invalid record/traffic |
3184 | Regasm.exe | Generic Protocol Command Decode | SURICATA TLS invalid record/traffic |
1 ETPRO signatures available at the full report