Malware analysis 453084c59b89d240f4667547de91ad114596fb3b3c02c8c942b7de4de5ba8a6b.xls Malicious activity

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File name:	453084c59b89d240f4667547de91ad114596fb3b3c02c8c942b7de4de5ba8a6b.xls
Full analysis:	https://app.any.run/tasks/71bbbc03-55bb-423a-b995-240aa7aa8d18
Verdict:	Malicious activity
Threats:	A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. 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. Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email. Malware Trends Tracker >>>
Analysis date:	January 11, 2019, 13:14:34
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	ole-embedded exploit CVE-2017-11882 loader trojan nanocore rat
Indicators:
MIME:	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
File info:	Microsoft Excel 2007+
MD5:	458F18AD5BF641C7E4BEF21B7DFB2C23
SHA1:	77289B014B26A57DC17A54DAC9C345DCDCF6D31E
SHA256:	453084C59B89D240F4667547DE91AD114596FB3B3C02C8C942B7DE4DE5BA8A6B
SSDEEP:	384:Fi+mPe8qmaJJXGlr0uz145vx+rXj5vIq5FSIT5JyInh5ERIHz27jKDS9:k+sxqmIGp0uzmpxOzxdyoPyqGRw2H9

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:: 300 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: 240 seconds
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 (68.0.3440.106)
Google Update Helper (1.3.33.17)
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 61.0.2 (x86 en-US) (61.0.2)
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
  - bvcz.exe (PID: 3696)
  - bvcz.exe (PID: 2940)
- Loads the Task Scheduler COM API
  - schtasks.exe (PID: 2752)
- Equation Editor starts application (CVE-2017-11882)
  - EQNEDT32.EXE (PID: 3156)
- Suspicious connection from the Equation Editor
  - EQNEDT32.EXE (PID: 3156)
- Downloads executable files from the Internet
  - EQNEDT32.EXE (PID: 3156)
- Uses Task Scheduler to run other applications
  - bvcz.exe (PID: 2940)
- NanoCore was detected
  - bvcz.exe (PID: 3696)
- Changes the autorun value in the registry
  - bvcz.exe (PID: 3696)
- Connects to CnC server
  - bvcz.exe (PID: 3696)
SUSPICIOUS
- Creates files in the user directory
  - EQNEDT32.EXE (PID: 3156)
  - bvcz.exe (PID: 3696)
- Executable content was dropped or overwritten
  - EQNEDT32.EXE (PID: 3156)
  - bvcz.exe (PID: 3696)
- Application launched itself
  - bvcz.exe (PID: 2940)
- Connects to unusual port
  - bvcz.exe (PID: 3696)
INFO
- Reads Microsoft Office registry keys
  - EXCEL.EXE (PID: 3004)

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

.xlsx	\|	Excel Microsoft Office Open XML Format document (61.2)
.zip	\|	Open Packaging Conventions container (31.5)
.zip	\|	ZIP compressed archive (7.2)

EXIF

XML

AppVersion:	12
HyperlinksChanged:	No
SharedDoc:	No
LinksUpToDate:	No
TitlesOfParts:	Sheet1 Sheet2 Sheet3
HeadingPairs:	Worksheets 3
ScaleCrop:	No
DocSecurity:	None
Application:	Microsoft Excel
ModifyDate:	2019:01:10 03:19:10Z
CreateDate:	2019:01:10 03:18:54Z
LastModifiedBy:	asus

XMP

Creator:	asus

ZIP

ZipFileName:	[Content_Types].xml
ZipUncompressedSize:	1763
ZipCompressedSize:	385
ZipCRC:	0xecf8c1ed
ZipModifyDate:	2019:01:10 13:03:30
ZipCompression:	Deflated
ZipBitFlag:	0x0002
ZipRequiredVersion:	20

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	Indicators	Parent process
3004	"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
3156	"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding	C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE		svchost.exe
User: admin Company: Design Science, Inc. Integrity Level: MEDIUM Description: Microsoft Equation Editor Exit code: 0 Version: 00110900
2940	C:\Users\admin\AppData\Roaming\bvcz.exe	C:\Users\admin\AppData\Roaming\bvcz.exe	—	EQNEDT32.EXE
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0
2752	"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qLhVPwN" /XML "C:\Users\admin\AppData\Local\Temp\tmpAE9E.tmp"	C:\Windows\System32\schtasks.exe	—	bvcz.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)
3696	"C:\Users\admin\AppData\Roaming\bvcz.exe"	C:\Users\admin\AppData\Roaming\bvcz.exe		bvcz.exe
User: admin Integrity Level: MEDIUM Version: 1.0.0.0

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Total events

676

Read events

625

Write events

Delete events

Modification events


(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	write	Name:	s',
Value: 73272C00BC0B0000010000000000000000000000
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: Off
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: On
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel
Operation:	write	Name:	MTTT
Value: BC0B0000D2ADD1A1AFA9D40100000000
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete value	Name:	s',
Value: 73272C00BC0B0000010000000000000000000000
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete key	Name:
Value:
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency
Operation:	delete key	Name:
Value:
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	UNCAsIntranet
Value: 0
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	AutoDetect
Value: 1
(PID) Process:	(3004) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\DocumentRecovery\20EC78
Operation:	write	Name:	20EC88
Value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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
3004	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\CVRE7E3.tmp.cvr		—
		MD5:—	SHA256:—
2940	bvcz.exe	C:\Users\admin\AppData\Local\Temp\tmpAE9E.tmp		—
		MD5:—	SHA256:—
3156	EQNEDT32.EXE	C:\Users\admin\AppData\Roaming\bvcz.exe		executable
		MD5:BDCC98D698552059ED43DA2AECB28446	SHA256:48E97CB513485C89E945CB3A484A3B48067161298A82837BE174A7F570A95522
3156	EQNEDT32.EXE	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\RB73MZ6Y\uwa[1].exe		executable
		MD5:BDCC98D698552059ED43DA2AECB28446	SHA256:48E97CB513485C89E945CB3A484A3B48067161298A82837BE174A7F570A95522
3696	bvcz.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe		executable
		MD5:BDCC98D698552059ED43DA2AECB28446	SHA256:48E97CB513485C89E945CB3A484A3B48067161298A82837BE174A7F570A95522
3696	bvcz.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.dat		binary
		MD5:8A76230C27FAB09EA487471A3006EA66	SHA256:E5E5BD7EFA4606496AE1B82A4B8EC09B0D7401727A0940DA8A599521FF50DD29
3696	bvcz.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\catalog.dat		bs
		MD5:9E7D0351E4DF94A9B0BADCEB6A9DB963	SHA256:AAFC7B40C5FE680A2BB549C3B90AABAAC63163F74FFFC0B00277C6BBFF88B757
3696	bvcz.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\storage.dat		binary
		MD5:653DDDCB6C89F6EC51F3DDC0053C5914	SHA256:83B9CAE66800C768887FB270728F6806CBEBDEAD9946FA730F01723847F17FF9
3696	bvcz.exe	C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\settings.bin		binary
		MD5:4E5E92E2369688041CC82EF9650EDED2	SHA256:F8098A6290118F2944B9E7C842BD014377D45844379F863B00D54515A8A64B48

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
3156	EQNEDT32.EXE	GET	200	198.91.81.3:80	http://win32.x10host.com/uwa.exe	US	executable	1.04 Mb	malicious

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
3156	EQNEDT32.EXE	198.91.81.3:80	win32.x10host.com	SingleHop, Inc.	US	malicious
3696	bvcz.exe	31.220.7.204:1626	—	HostHatch, Inc	SE	malicious

DNS requests

Domain	IP	Reputation
win32.x10host.com	198.91.81.3	malicious

Threats

PID	Process	Class	Message
3156	EQNEDT32.EXE	Potentially Bad Traffic	ET CURRENT_EVENTS Terse alphanumeric executable downloader high likelihood of being hostile
3156	EQNEDT32.EXE	Potential Corporate Privacy Violation	ET POLICY PE EXE or DLL Windows file download HTTP
3696	bvcz.exe	A Network Trojan was detected	ET TROJAN Possible NanoCore C2 60B
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT
3696	bvcz.exe	A Network Trojan was detected	ET TROJAN Possible NanoCore C2 60B
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT
3696	bvcz.exe	A Network Trojan was detected	MALWARE [PTsecurity] NanoCore.RAT

59 ETPRO signatures available at the full report

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No debug info

General Info

453084c59b89d240f4667547de91ad114596fb3b3c02c8c942b7de4de5ba8a6b.xls

458F18AD5BF641C7E4BEF21B7DFB2C23

77289B014B26A57DC17A54DAC9C345DCDCF6D31E

453084C59B89D240F4667547DE91AD114596FB3B3C02C8C942B7DE4DE5BA8A6B

384:Fi+mPe8qmaJJXGlr0uz145vx+rXj5vIq5FSIT5JyInh5ERIHz27jKDS9:k+sxqmIGp0uzmpxOzxdyoPyqGRw2H9

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Application was dropped or rewritten from another process

Loads the Task Scheduler COM API

Equation Editor starts application (CVE-2017-11882)

Suspicious connection from the Equation Editor

Downloads executable files from the Internet

Uses Task Scheduler to run other applications

NanoCore was detected

Changes the autorun value in the registry

Connects to CnC server

SUSPICIOUS

Creates files in the user directory

Executable content was dropped or overwritten

Application launched itself

Connects to unusual port

INFO

Reads Microsoft Office registry keys

Malware configuration

Static information

TRiD

EXIF

XML

XMP

ZIP

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