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File name:

6be4c966edc63f37f52fc3a935344f634a8bb064d97200a31c0a3d2459ceda26.doc

Full analysis: https://app.any.run/tasks/8eaa07ec-c96b-4c9d-9f14-21065d568ecd
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: April 25, 2019, 13:47:20
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
ole-embedded
trojan
nanocore
rat
Indicators:
MIME: text/rtf
File info: Rich Text Format data, version 1, unknown character set
MD5:

FC377DE40FEFA629A91F812EBEBE1D9E

SHA1:

00E21829673F1E3F7C00D9017EF0521F8A605134

SHA256:

6BE4C966EDC63F37F52FC3A935344F634A8BB064D97200A31C0A3D2459CEDA26

SSDEEP:

1536:qs0xsETtuPNi9jxQV7eMMET5vQi9jxQVzSubEtK:q7acmTVizc9qV+f0

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.
  • MALICIOUS

    • Application was dropped or rewritten from another process

      • d8yrxmsh.exe (PID: 2744)
      • d8yrxmsh.exe (PID: 2340)
      • d8yrxmsh.exe (PID: 3024)
      • d8yrxmsh.exe (PID: 3032)
    • Unusual execution from Microsoft Office

      • EXCEL.EXE (PID: 3532)
      • EXCEL.EXE (PID: 3280)
    • Executable content was dropped or overwritten

      • EXCEL.EXE (PID: 3280)
    • Changes the autorun value in the registry

      • d8yrxmsh.exe (PID: 3024)
    • Connects to CnC server

      • d8yrxmsh.exe (PID: 3024)
    • NanoCore was detected

      • d8yrxmsh.exe (PID: 3024)
  • SUSPICIOUS

    • Application launched itself

      • d8yrxmsh.exe (PID: 2340)
      • d8yrxmsh.exe (PID: 2744)
    • Creates files in the user directory

      • d8yrxmsh.exe (PID: 3024)
    • Executable content was dropped or overwritten

      • d8yrxmsh.exe (PID: 3024)
  • INFO

    • Creates files in the user directory

      • WINWORD.EXE (PID: 2932)
      • EXCEL.EXE (PID: 3280)
    • Reads Microsoft Office registry keys

      • excelcnv.exe (PID: 3864)
      • EXCEL.EXE (PID: 3532)
      • EXCEL.EXE (PID: 3280)
      • WINWORD.EXE (PID: 2932)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.rtf | Rich Text Format (100)

EXIF

RTF

InternalVersionNumber: 101
CharactersWithSpaces: 52
Characters: 46
Words: 7
Pages: 1
TotalEditTime: 1 minute
RevisionNumber: 1
ModifyDate: 2019:04:24 22:47:00
CreateDate: 2019:04:24 22:46:00
LastModifiedBy: Administrator
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
38
Monitored processes
8
Malicious processes
4
Suspicious processes
1

Behavior graph

Click at the process to see the details
start drop and start winword.exe no specs excel.exe d8yrxmsh.exe no specs excel.exe d8yrxmsh.exe no specs excelcnv.exe no specs #NANOCORE d8yrxmsh.exe d8yrxmsh.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
2932"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\AppData\Local\Temp\6be4c966edc63f37f52fc3a935344f634a8bb064d97200a31c0a3d2459ceda26.doc"C:\Program Files\Microsoft Office\Office14\WINWORD.EXEexplorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Word
Version:
14.0.6024.1000
3280"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" -EmbeddingC:\Program Files\Microsoft Office\Office14\EXCEL.EXE
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Excel
Exit code:
0
Version:
14.0.6024.1000
2340"C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exe" C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exeEXCEL.EXE
User:
admin
Company:
omnipotentiality
Integrity Level:
MEDIUM
Description:
witneyer
Exit code:
0
Version:
1.07.0001
3532"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" -EmbeddingC:\Program Files\Microsoft Office\Office14\EXCEL.EXE
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Excel
Exit code:
0
Version:
14.0.6024.1000
2744"C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exe" C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exeEXCEL.EXE
User:
admin
Company:
omnipotentiality
Integrity Level:
MEDIUM
Description:
witneyer
Exit code:
0
Version:
1.07.0001
3864"C:\Program Files\Microsoft Office\Office14\excelcnv.exe" -EmbeddingC:\Program Files\Microsoft Office\Office14\excelcnv.exesvchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Excel
Exit code:
0
Version:
14.0.6024.1000
3024C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exe" C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exe
d8yrxmsh.exe
User:
admin
Company:
omnipotentiality
Integrity Level:
MEDIUM
Description:
witneyer
Version:
1.07.0001
3032C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exe" C:\Users\admin\AppData\Local\Temp\d8yrxmsh.exed8yrxmsh.exe
User:
admin
Company:
omnipotentiality
Integrity Level:
MEDIUM
Description:
witneyer
Exit code:
0
Version:
1.07.0001
Total events
2 757
Read events
2 072
Write events
668
Delete events
17

Modification events

(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Resiliency\StartupItems
Operation:writeName:ps>
Value:
70733E00740B0000010000000000000000000000
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1033
Value:
Off
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1033
Value:
On
(PID) Process:(2932) WINWORD.EXEKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\00004109D30000000000000000F01FEC\Usage
Operation:writeName:WORDFiles
Value:
1318649886
(PID) Process:(2932) WINWORD.EXEKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\00004109D30000000000000000F01FEC\Usage
Operation:writeName:ProductFiles
Value:
1318650008
(PID) Process:(2932) WINWORD.EXEKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\00004109D30000000000000000F01FEC\Usage
Operation:writeName:ProductFiles
Value:
1318650009
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word
Operation:writeName:MTTT
Value:
740B00007E4DE3706DFBD40100000000
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Resiliency\StartupItems
Operation:writeName:yt>
Value:
79743E00740B000004000000000000008C00000001000000840000003E0043003A005C00550073006500720073005C00610064006D0069006E005C0041007000700044006100740061005C0052006F0061006D0069006E0067005C004D006900630072006F0073006F00660074005C00540065006D0070006C0061007400650073005C004E006F0072006D0061006C002E0064006F0074006D00000000000000
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Resiliency\StartupItems
Operation:delete valueName:yt>
Value:
79743E00740B000004000000000000008C00000001000000840000003E0043003A005C00550073006500720073005C00610064006D0069006E005C0041007000700044006100740061005C0052006F0061006D0069006E0067005C004D006900630072006F0073006F00660074005C00540065006D0070006C0061007400650073005C004E006F0072006D0061006C002E0064006F0074006D00000000000000
(PID) Process:(2932) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
Executable files
3
Suspicious files
6
Text files
1
Unknown types
5

Dropped files

PID
Process
Filename
Type
2932WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVRFB50.tmp.cvr
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CVR255.tmp.cvr
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CabA84.tmp
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\TarA85.tmp
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CabA95.tmp
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\TarA96.tmp
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CabBA1.tmp
MD5:
SHA256:
3280EXCEL.EXEC:\Users\admin\AppData\Local\Temp\TarBA2.tmp
MD5:
SHA256:
3532EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CVR13BA.tmp.cvr
MD5:
SHA256:
3532EXCEL.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\I0488CJO\stub[1].exe
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
4
DNS requests
2
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3280
EXCEL.EXE
GET
200
67.27.159.254:80
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab
US
compressed
55.6 Kb
whitelisted
3280
EXCEL.EXE
GET
200
67.27.159.254:80
http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/47BEABC922EAE80E78783462A79F45C254FDE68B.crt
US
der
969 b
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
3532
EXCEL.EXE
104.238.117.30:443
depedpasay.ph
GoDaddy.com, LLC
US
suspicious
3024
d8yrxmsh.exe
91.192.100.11:7077
SOFTplus Entwicklungen GmbH
CH
malicious
3280
EXCEL.EXE
104.238.117.30:443
depedpasay.ph
GoDaddy.com, LLC
US
suspicious
3280
EXCEL.EXE
67.27.159.254:80
www.download.windowsupdate.com
Level 3 Communications, Inc.
US
malicious

DNS requests

Domain
IP
Reputation
depedpasay.ph
  • 104.238.117.30
suspicious
www.download.windowsupdate.com
  • 67.27.159.254
  • 67.27.157.126
  • 67.27.157.254
  • 67.26.75.254
  • 8.248.115.254
whitelisted

Threats

PID
Process
Class
Message
3280
EXCEL.EXE
Generic Protocol Command Decode
SURICATA STREAM excessive retransmissions
3024
d8yrxmsh.exe
A Network Trojan was detected
ET TROJAN Possible NanoCore C2 60B
3024
d8yrxmsh.exe
A Network Trojan was detected
MALWARE [PTsecurity] NanoCore.RAT
3024
d8yrxmsh.exe
A Network Trojan was detected
MALWARE [PTsecurity] NanoCore.RAT
3024
d8yrxmsh.exe
A Network Trojan was detected
MALWARE [PTsecurity] NanoCore.RAT
3024
d8yrxmsh.exe
A Network Trojan was detected
MALWARE [PTsecurity] NanoCore.RAT
3024
d8yrxmsh.exe
A Network Trojan was detected
MALWARE [PTsecurity] NanoCore.RAT
15 ETPRO signatures available at the full report
No debug info