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| File name: | dllhost.exe |
| Full analysis: | https://app.any.run/tasks/fe6963d2-f3ed-46d6-a3af-afe4438d40ff |
| Verdict: | Malicious activity |
| Threats: | NanoCore is a Remote Access Trojan or RAT. This malware is highly customizable with plugins which allow attackers to tailor its functionality to their needs. Nanocore is created with the .NET framework and it’s available for purchase for just $25 from its “official” website. |
| Analysis date: | March 31, 2020, 08:55:42 |
| 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: | 2580D289E20E37C5704546917CA34118 |
| SHA1: | 4FED446D1D14635901A6FA9DC2542AF3711A2CEE |
| SHA256: | 463382C4855A92DEDA6EA87D6FBD3B8DAC0C5BD8E61218CEC5AB76DF4433384D |
| SSDEEP: | 6144:GMif8bwSfghFb6Ds9Tc2NyXtH5a+F/UoizIcoTGZX2On062sTdZulj1ha+Imq:piJBP2D7kydZa+FqsvEG+Wlj1jN |
MALICIOUS
Changes the autorun value in the registry
- dllhost.exe (PID: 2412)
- dllhost.exe (PID: 3356)
- powershell.exe (PID: 2972)
NANOCORE was detected
- dllhost.exe (PID: 2412)
- dllhost.exe (PID: 3356)
Loads the Task Scheduler COM API
- schtasks.exe (PID: 2852)
- schtasks.exe (PID: 1392)
Uses Task Scheduler to run other applications
- dllhost.exe (PID: 3356)
Connects to CnC server
- dllhost.exe (PID: 3356)
SUSPICIOUS
Application launched itself
- dllhost.exe (PID: 2412)
- dllhost.exe (PID: 3580)
- dllhost.exe (PID: 272)
Creates files in the Windows directory
- dllhost.exe (PID: 272)
Executable content was dropped or overwritten
- dllhost.exe (PID: 2412)
- dllhost.exe (PID: 272)
- dllhost.exe (PID: 3356)
Creates files in the user directory
- dllhost.exe (PID: 2412)
- powershell.exe (PID: 2972)
- dllhost.exe (PID: 3356)
Executes PowerShell scripts
- dllhost.exe (PID: 272)
Creates files in the program directory
- dllhost.exe (PID: 3356)
Connects to unusual port
- dllhost.exe (PID: 3356)
INFO
Reads Microsoft Office registry keys
- WINWORD.EXE (PID: 2316)
Manual execution by user
- WINWORD.EXE (PID: 2316)
Creates files in the user directory
- WINWORD.EXE (PID: 2316)
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.) (82.9) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (7.4) |
| .exe | | | Win32 Executable (generic) (5.1) |
| .exe | | | Generic Win/DOS Executable (2.2) |
| .exe | | | DOS Executable Generic (2.2) |
EXIF
EXE
| AssemblyVersion: | 6.2.100.1 |
|---|---|
| ProductVersion: | 6.2.100.1 |
| ProductName: | dllhost |
| OriginalFileName: | ads.exe |
| LegalTrademarks: | Microsoft Corporation |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| InternalName: | ads.exe |
| FileVersion: | 6.2.100.1 |
| FileDescription: | dllhost |
| CompanyName: | dllhost |
| Comments: | COM Surrogate |
| CharacterSet: | Unicode |
| LanguageCode: | Neutral |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x003f |
| ProductVersionNumber: | 6.2.100.1 |
| FileVersionNumber: | 6.2.100.1 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x4b84e |
| UninitializedDataSize: | - |
| InitializedDataSize: | 61440 |
| CodeSize: | 301568 |
| LinkerVersion: | 11 |
| PEType: | PE32 |
| TimeStamp: | 2020:03:30 10:57:08+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 30-Mar-2020 08:57:08 |
| Comments: | COM Surrogate |
| CompanyName: | dllhost |
| FileDescription: | dllhost |
| FileVersion: | 6.2.100.1 |
| InternalName: | ads.exe |
| LegalCopyright: | © Microsoft Corporation. All rights reserved. |
| LegalTrademarks: | Microsoft Corporation |
| OriginalFilename: | ads.exe |
| ProductName: | dllhost |
| ProductVersion: | 6.2.100.1 |
| Assembly Version: | 6.2.100.1 |
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: | 30-Mar-2020 08:57:08 |
| 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 | 0x00049854 | 0x00049A00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 7.98689 |
.rsrc | 0x0004C000 | 0x0000EC90 | 0x0000EE00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 5.42394 |
.reloc | 0x0005C000 | 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 |
2 | 7.95253 | 15510 | UNKNOWN | UNKNOWN | RT_ICON |
3 | 3.6007 | 16936 | UNKNOWN | UNKNOWN | RT_ICON |
4 | 3.63599 | 9640 | UNKNOWN | UNKNOWN | RT_ICON |
5 | 3.94066 | 6760 | UNKNOWN | UNKNOWN | RT_ICON |
6 | 3.78841 | 4264 | UNKNOWN | UNKNOWN | RT_ICON |
7 | 4.17521 | 2440 | UNKNOWN | UNKNOWN | RT_ICON |
8 | 4.41825 | 1720 | UNKNOWN | UNKNOWN | RT_ICON |
9 | 4.60198 | 1128 | UNKNOWN | UNKNOWN | RT_ICON |
32512 | 2.98079 | 118 | UNKNOWN | UNKNOWN | RT_GROUP_ICON |
Imports
mscoree.dll |
Total processes
50
Monitored processes
8
Malicious processes
4
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 3580 | "C:\Users\admin\AppData\Local\Temp\dllhost.exe" | C:\Users\admin\AppData\Local\Temp\dllhost.exe | — | explorer.exe |
User: admin Company: dllhost Integrity Level: MEDIUM Description: dllhost Exit code: 0 Version: 6.2.100.1 | ||||
| 2316 | "C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\Desktop\sonycontact.rtf" | C:\Program Files\Microsoft Office\Office14\WINWORD.EXE | — | explorer.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Word Exit code: 0 Version: 14.0.6024.1000 | ||||
| 2412 | "C:\Users\admin\AppData\Local\Temp\dllhost.exe" | C:\Users\admin\AppData\Local\Temp\dllhost.exe | dllhost.exe | |
User: admin Company: dllhost Integrity Level: MEDIUM Description: dllhost Exit code: 0 Version: 6.2.100.1 | ||||
| 272 | "C:\Users\admin\AppData\Local\Temp\dllhost.exe" | C:\Users\admin\AppData\Local\Temp\dllhost.exe | dllhost.exe | |
User: admin Company: dllhost Integrity Level: HIGH Description: dllhost Exit code: 0 Version: 6.2.100.1 | ||||
| 2972 | "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'dllhost';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'dllhost' -Value '"C:\Windows\system32\COM Surrogate\dllhost.exe"' -PropertyType 'String' | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | dllhost.exe | |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows PowerShell Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 3356 | "C:\Users\admin\AppData\Local\Temp\dllhost.exe" | C:\Users\admin\AppData\Local\Temp\dllhost.exe | dllhost.exe | |
User: admin Company: dllhost Integrity Level: HIGH Description: dllhost Version: 6.2.100.1 | ||||
| 1392 | "schtasks.exe" /create /f /tn "TCP Monitor" /xml "C:\Users\admin\AppData\Local\Temp\tmp37CC.tmp" | C:\Windows\system32\schtasks.exe | — | dllhost.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
| 2852 | "schtasks.exe" /create /f /tn "TCP Monitor Task" /xml "C:\Users\admin\AppData\Local\Temp\tmp385A.tmp" | C:\Windows\system32\schtasks.exe | — | dllhost.exe |
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Manages scheduled tasks Exit code: 0 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
1 715
Read events
1 331
Write events
0
Delete events
0
Modification events
Executable files
3
Suspicious files
2
Text files
4
Unknown types
4
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2316 | WINWORD.EXE | C:\Users\admin\AppData\Local\Temp\CVRA0BD.tmp.cvr | — | |
MD5:— | SHA256:— | |||
| 2316 | WINWORD.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{4A4EF4CC-71E8-4D72-B72F-4DCD60FE73B3}.tmp | — | |
MD5:— | SHA256:— | |||
| 2316 | WINWORD.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRS{792122E6-4427-4406-9341-559C20DFF0D6}.tmp | — | |
MD5:— | SHA256:— | |||
| 2316 | WINWORD.EXE | C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Word\~WRF{88F3C42B-00F0-4743-8A52-D16FBA8E711C}.tmp | — | |
MD5:— | SHA256:— | |||
| 3356 | dllhost.exe | C:\Users\admin\AppData\Local\Temp\tmp37CC.tmp | — | |
MD5:— | SHA256:— | |||
| 2972 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\NTWID19PU87VJII1KZWG.temp | — | |
MD5:— | SHA256:— | |||
| 3356 | dllhost.exe | C:\Users\admin\AppData\Local\Temp\tmp385A.tmp | — | |
MD5:— | SHA256:— | |||
| 2972 | powershell.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms~RFa737ec.TMP | binary | |
MD5:19449318A34E82C24ECE9FB0CF7B689E | SHA256:2F3F1187F34B02F0C96612F12EF66259DC02F82258B76B4910AAE0F582D2838B | |||
| 3356 | dllhost.exe | C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\task.dat | text | |
MD5:223BF0899031DF4947F9352AEEE9F4CC | SHA256:04F67189EEBAC41598CCA90E034AFCEEEB317734612E4F1D8D9C0B019DC60331 | |||
| 2316 | WINWORD.EXE | C:\Users\admin\AppData\Roaming\Microsoft\Templates\~$Normal.dotm | pgc | |
MD5:B11437ADCE2FEB387B759FFB6A9F5112 | SHA256:D405E27A33788DAFB4D51A46554BDE2AE3576E6E3528DF203EB3A492AA746563 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
8
DNS requests
4
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 |
|---|---|---|---|---|---|---|
3356 | dllhost.exe | 8.8.8.8:53 | — | Google Inc. | US | whitelisted |
3356 | dllhost.exe | 3.125.209.94:12984 | 0.tcp.eu.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
0.tcp.eu.ngrok.io |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
3356 | dllhost.exe | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
3356 | dllhost.exe | A Network Trojan was detected | ET TROJAN Possible NanoCore C2 60B |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
3356 | dllhost.exe | A Network Trojan was detected | REMOTE [PTsecurity] NanoCore.RAT |
50 ETPRO signatures available at the full report