Malware analysis 5b9eaa9399da3bbccc66ca64f823f5846b2f487feb86ec62873f0d4c3f2e681e.xls Malicious activity

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File name:	5b9eaa9399da3bbccc66ca64f823f5846b2f487feb86ec62873f0d4c3f2e681e.xls
Full analysis:	https://app.any.run/tasks/beb010f9-12f8-4573-9840-4d9b341196b0
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. Remote access trojans (RATs) are a type of malware that enables attackers to establish complete to partial control over infected computers. Such malicious programs often have a modular design, offering a wide range of functionalities for conducting illicit activities on compromised systems. Some of the most common features of RATs include access to the users’ data, webcam, and keystrokes. This malware is often distributed through phishing emails and links. Malware Trends Tracker >>>
Analysis date:	April 24, 2019, 01:35:21
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	macros macros-on-open rat nanocore
Indicators:
MIME:	application/vnd.ms-excel
File info:	Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.1, Code page: 1252, Title: faeb5, Subject: h71a777, Last Saved By: USER, Name of Creating Application: Microsoft Excel, Create Time/Date: Tue Apr 23 09:11:33 2019, Last Saved Time/Date: Tue Apr 23 10:06:47 2019, Security: 0
MD5:	EE938E3423DEE0951871A0A97E4C28C5
SHA1:	4E990C8FE1FADB3CB867A1CF8DBA3086C1521173
SHA256:	5B9EAA9399DA3BBCCC66CA64F823F5846B2F487FEB86EC62873F0D4C3F2E681E
SSDEEP:	24576:oZYpG+bCdOB+1cFrCql8NI4GS1vYo8wC1WcJ:o2p7CdOpFrCqoI47+o7C1WcJ

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.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 8.0.7601.17514 undefined
Adobe Acrobat Reader DC MUI (15.023.20070)
Adobe Flash Player 26 ActiveX (26.0.0.131)
Adobe Flash Player 26 NPAPI (26.0.0.131)
Adobe Flash Player 26 PPAPI (26.0.0.131)
Adobe Refresh Manager (1.8.0)
CCleaner (5.35)
FileZilla Client 3.36.0 (3.36.0)
Google Chrome (73.0.3683.75)
Google Update Helper (1.3.33.23)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.6.1 (4.6.01055)
Microsoft Office Access MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Access Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Excel MUI (English) 2010 (14.0.6029.1000)
Microsoft Office OneNote MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Outlook MUI (English) 2010 (14.0.6029.1000)
Microsoft Office PowerPoint MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Professional 2010 (14.0.6029.1000)
Microsoft Office Proof (English) 2010 (14.0.6029.1000)
Microsoft Office Proof (French) 2010 (14.0.6029.1000)
Microsoft Office Proof (Spanish) 2010 (14.0.6029.1000)
Microsoft Office Proofing (English) 2010 (14.0.6029.1000)
Microsoft Office Publisher MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Single Image 2010 (14.0.6029.1000)
Microsoft Office Word MUI (English) 2010 (14.0.6029.1000)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (9.0.30729.6161)
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219 (10.0.40219)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2017 Redistributable (x86) - 14.15.26706 (14.15.26706.0)
Microsoft Visual C++ 2017 x86 Additional Runtime - 14.15.26706 (14.15.26706)
Microsoft Visual C++ 2017 x86 Minimum Runtime - 14.15.26706 (14.15.26706)
Mozilla Firefox 65.0.2 (x86 en-US) (65.0.2)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
VLC media player (2.2.6)
WinRAR 5.60 (32-bit) (5.60.0)

Hotfixes

Client LanguagePack Package
Client Refresh LanguagePack Package
CodecPack Basic Package
Foundation Package
IE Troubleshooters Package
InternetExplorer Optional Package
KB2534111
KB2999226
KB976902
LocalPack AU Package
LocalPack CA Package
LocalPack GB Package
LocalPack US Package
LocalPack ZA Package
ProfessionalEdition
UltimateEdition

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MALICIOUS
- Application was dropped or rewritten from another process
  - wb416c9.exe (PID: 4044)
  - microsoft.exe (PID: 3056)
  - microsoft.exe (PID: 1748)
- Starts CMD.EXE for commands execution
  - EXCEL.EXE (PID: 2840)
- Unusual execution from Microsoft Office
  - EXCEL.EXE (PID: 2840)
- Writes to a start menu file
  - microsoft.exe (PID: 3056)
- NanoCore was detected
  - microsoft.exe (PID: 1748)
- Changes the autorun value in the registry
  - microsoft.exe (PID: 1748)
SUSPICIOUS
- Executable content was dropped or overwritten
  - cmd.exe (PID: 3556)
  - wb416c9.exe (PID: 4044)
  - microsoft.exe (PID: 1748)
- Starts itself from another location
  - wb416c9.exe (PID: 4044)
- Creates files in the user directory
  - wb416c9.exe (PID: 4044)
  - microsoft.exe (PID: 3056)
  - microsoft.exe (PID: 1748)
- Application launched itself
  - microsoft.exe (PID: 3056)
INFO
- Reads Microsoft Office registry keys
  - EXCEL.EXE (PID: 2840)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.xls	\|	Microsoft Excel sheet (48)
.xls	\|	Microsoft Excel sheet (alternate) (39.2)

EXIF

FlashPix

Title:	faeb5
Subject:	h71a777
Author:	-
Keywords:	-
Comments:	-
LastModifiedBy:	USER
Software:	Microsoft Excel
CreateDate:	2019:04:23 08:11:33
ModifyDate:	2019:04:23 09:06:47
Security:	None
CodePage:	Windows Latin 1 (Western European)
Company:	-
AppVersion:	12
ScaleCrop:	No
LinksUpToDate:	No
SharedDoc:	No
HyperlinksChanged:	No
TitleOfParts:	XGODI
HeadingPairs:	Excel 4.0 Macros 1
CompObjUserTypeLen:	38
CompObjUserType:	Microsoft Office Excel 2003 Worksheet

No data.

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All screenshots are available in the full report

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Total processes

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID	CMD	Path	Parent process
2840	"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde	C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	explorer.exe
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Microsoft Excel Version: 14.0.6024.1000
3556	"C:\Windows\System32\cmd.exe" /c ren "C:\Users\admin\AppData\Local\Temp\wb416c9.txt" "wb416c9.exe" &start "" "C:\Users\admin\AppData\Local\Temp\wb416c9.exe"	C:\Windows\System32\cmd.exe	EXCEL.EXE
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850)
4044	"C:\Users\admin\AppData\Local\Temp\wb416c9.exe"	C:\Users\admin\AppData\Local\Temp\wb416c9.exe	cmd.exe
User: admin Integrity Level: MEDIUM Exit code: 0
3056	"C:\Users\admin\AppData\Roaming\chrome\microsoft.exe"	C:\Users\admin\AppData\Roaming\chrome\microsoft.exe	wb416c9.exe
User: admin Integrity Level: MEDIUM Exit code: 0
1748	"C:\Users\admin\AppData\Roaming\chrome\microsoft.exe"	C:\Users\admin\AppData\Roaming\chrome\microsoft.exe	microsoft.exe
User: admin Integrity Level: MEDIUM

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Total events

629

Read events

590

Write events

Delete events

Modification events


(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	write	Name:	f8>
Value: 66383E00180B0000010000000000000000000000
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: Off
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: On
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel
Operation:	write	Name:	MTTT
Value: 180B00009CC944053EFAD40100000000
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete value	Name:	f8>
Value: 66383E00180B0000010000000000000000000000
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete key	Name:
Value:
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency
Operation:	delete key	Name:
Value:
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	UNCAsIntranet
Value: 0
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	AutoDetect
Value: 1
(PID) Process:	(2840) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\DocumentRecovery\130091
Operation:	write	Name:	130091
Value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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2840	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\CVRFCE6.tmp.cvr		—
		MD5:—	SHA256:—
2840	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\wb416c9.txt		—
		MD5:—	SHA256:—
4044	wb416c9.exe	C:\Users\admin\AppData\Roaming\chrome\microsoft.exe:ZoneIdentifier		—
		MD5:—	SHA256:—
1748	microsoft.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.dat		text
		MD5:7236AD5E1FC306088343345A339942EB	SHA256:A58D00067803306CB57325D9EEFAA15E4434A93429CCF718C32A71F8B9908E20
3056	microsoft.exe	C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chrome.vbs		text
		MD5:358B4870118890990F8D59CBA4AB17A6	SHA256:19DAACA72A9B75F0CA80DE55AC25BBB7FC481C400BAD432818232687E7420061
4044	wb416c9.exe	C:\Users\admin\AppData\Roaming\chrome\microsoft.exe		executable
		MD5:6E83CD84B6079EDEB99B33EB273EBAC5	SHA256:02876A33D68395AFE804CD84B1C4B12552B6632C2E8E618889D56BDA9E1D631F
1748	microsoft.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe		executable
		MD5:6E83CD84B6079EDEB99B33EB273EBAC5	SHA256:02876A33D68395AFE804CD84B1C4B12552B6632C2E8E618889D56BDA9E1D631F
3556	cmd.exe	C:\Users\admin\AppData\Local\Temp\wb416c9.exe		executable
		MD5:6E83CD84B6079EDEB99B33EB273EBAC5	SHA256:02876A33D68395AFE804CD84B1C4B12552B6632C2E8E618889D56BDA9E1D631F

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

No HTTP requests

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
2840	EXCEL.EXE	173.254.28.133:443	limefish.design	Unified Layer	US	suspicious
1748	microsoft.exe	213.184.126.141:64657	—	Net-style Atarim Ltd	IL	unknown

DNS requests

Domain	IP	Reputation
limefish.design	173.254.28.133	unknown

Threats

No threats detected

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No debug info

General Info

5b9eaa9399da3bbccc66ca64f823f5846b2f487feb86ec62873f0d4c3f2e681e.xls

EE938E3423DEE0951871A0A97E4C28C5

4E990C8FE1FADB3CB867A1CF8DBA3086C1521173

5B9EAA9399DA3BBCCC66CA64F823F5846B2F487FEB86EC62873F0D4C3F2E681E

24576:oZYpG+bCdOB+1cFrCql8NI4GS1vYo8wC1WcJ:o2p7CdOpFrCqoI47+o7C1WcJ

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Application was dropped or rewritten from another process

Starts CMD.EXE for commands execution

Unusual execution from Microsoft Office

Writes to a start menu file

NanoCore was detected

Changes the autorun value in the registry

SUSPICIOUS

Executable content was dropped or overwritten

Starts itself from another location

Creates files in the user directory

Application launched itself

INFO

Reads Microsoft Office registry keys

Malware configuration

Static information

TRiD

EXIF

FlashPix

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Information

Information

Information

Information

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings