Malware analysis GrammarlyChecker.rar Malicious activity

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File name:	GrammarlyChecker.rar
Full analysis:	https://app.any.run/tasks/74aa73a0-9813-428a-8154-2a843994191a
Verdict:	Malicious activity
Analysis date:	February 10, 2019, 19:22:11
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME:	application/x-rar
File info:	RAR archive data, v5
MD5:	046139835A20835847910EA5D84E174D
SHA1:	2B1A2AB610D71BAD7E76855B2C753E7B1EE1898D
SHA256:	42570E7F90AB12CD0FAA532676AE3E02B4EDC82FAA8BF0298A9E5A8B724BE2FD
SSDEEP:	12288:0M5s0BbaqvIzJpM1kSwiWvVFKQaBWAdM2rppP1ipIFvX:00Gqw7MuSwFM3ZppHxX

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 (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
  - GrammarlyChecker.exe (PID: 3096)
- Loads dropped or rewritten executable
  - GrammarlyChecker.exe (PID: 3096)
- Changes settings of System certificates
  - GrammarlyChecker.exe (PID: 3096)
SUSPICIOUS
- Executable content was dropped or overwritten
  - WinRAR.exe (PID: 2852)
- Adds / modifies Windows certificates
  - GrammarlyChecker.exe (PID: 3096)
- Connects to unusual port
  - GrammarlyChecker.exe (PID: 3096)
INFO
No info indicators.

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

.rar	\|	RAR compressed archive (v5.0) (61.5)
.rar	\|	RAR compressed archive (gen) (38.4)

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

2852

"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\GrammarlyChecker.rar"

C:\Program Files\WinRAR\WinRAR.exe

explorer.exe

User:

admin

Company:

Alexander Roshal

Integrity Level:

MEDIUM

Description:

WinRAR archiver

Exit code:

Version:

5.60.0

Modules

Images
c:\program files\winrar\winrar.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\usp10.dll
c:\windows\system32\comdlg32.dll

3096

"C:\Users\admin\AppData\Local\Temp\Rar$EXa2852.7126\GrammarlyChecker\GrammarlyChecker.exe"

C:\Users\admin\AppData\Local\Temp\Rar$EXa2852.7126\GrammarlyChecker\GrammarlyChecker.exe

WinRAR.exe

User:

admin

Integrity Level:

MEDIUM

Description:

GrammarlyChecker

Exit code:

Version:

1.0.0.0

Modules

Images
c:\users\admin\appdata\local\temp\rar$exa2852.7126\grammarlychecker\grammarlychecker.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\microsoft.net\framework\v4.0.30319\mscoreei.dll

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Total events

472

Read events

440

Write events

Delete events

Modification events


(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes
Operation:	write	Name:	ShellExtBMP
Value:
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes
Operation:	write	Name:	ShellExtIcon
Value:
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\MuiCache\5F\52C64B7E
Operation:	write	Name:	LanguageList
Value: en-US
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\ArcHistory
Operation:	write	Name:	0
Value: C:\Users\admin\AppData\Local\Temp\GrammarlyChecker.rar
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	name
Value: 120
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	type
Value: 120
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	mtime
Value: 100
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	UNCAsIntranet
Value: 0
(PID) Process:	(2852) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	AutoDetect
Value: 1

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\CabF0A0.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\TarF0A1.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\CabF0D0.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\TarF0D1.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\CabF1FB.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\TarF1FC.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\CabF2D8.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\TarF2D9.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\CabF338.tmp		—
		MD5:—	SHA256:—
3096	GrammarlyChecker.exe	C:\Users\admin\AppData\Local\Temp\TarF348.tmp		—
		MD5:—	SHA256:—

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

143

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
3096	GrammarlyChecker.exe	GET	200	2.16.186.56:80	http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab	unknown	compressed	55.2 Kb	whitelisted
3096	GrammarlyChecker.exe	GET	200	2.16.186.56:80	http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab	unknown	compressed	55.2 Kb	whitelisted
3096	GrammarlyChecker.exe	GET	200	13.32.123.48:80	http://x.ss2.us/x.cer	US	der	1.27 Kb	whitelisted
3096	GrammarlyChecker.exe	GET	200	13.32.123.48:80	http://x.ss2.us/x.cer	US	der	1.27 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
3096	GrammarlyChecker.exe	81.95.131.10:41398	—	Avantel, Close Joint Stock Company	RU	suspicious
3096	GrammarlyChecker.exe	177.200.64.123:4145	—	SKYNET TELECOMUNICACOES LTDA	BR	unknown
3096	GrammarlyChecker.exe	89.216.45.62:1080	—	Serbia BroadBand-Srpske Kablovske mreze d.o.o.	RS	unknown
3096	GrammarlyChecker.exe	103.16.63.233:36517	—	Ministry of Posts and Telecommunication	KH	unknown
3096	GrammarlyChecker.exe	185.14.250.194:37422	—	Tarin General Trading and Setting Up Internet Device LTD	IQ	suspicious
3096	GrammarlyChecker.exe	2.16.186.56:80	www.download.windowsupdate.com	Akamai International B.V.	—	whitelisted
3096	GrammarlyChecker.exe	13.32.123.48:80	x.ss2.us	Amazon.com, Inc.	US	unknown
3096	GrammarlyChecker.exe	103.228.2.1:32600	—	Mynet Limited	BD	unknown
3096	GrammarlyChecker.exe	103.85.163.178:49238	—	Asia Pacific Communication Limited	BD	suspicious
3096	GrammarlyChecker.exe	91.98.70.250:4145	—	Pars Online PJS	IR	unknown

DNS requests

Domain	IP	Reputation
auth.grammarly.com	35.153.94.200 18.215.192.228 54.208.222.32	unknown
x.ss2.us	13.32.123.48 13.32.123.175 13.32.123.70 13.32.123.82	whitelisted
www.download.windowsupdate.com	2.16.186.56 2.16.186.81	whitelisted

Threats

PID	Process	Class	Message
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection
3096	GrammarlyChecker.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Socks4 Connection

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No debug info

General Info

GrammarlyChecker.rar

046139835A20835847910EA5D84E174D

2B1A2AB610D71BAD7E76855B2C753E7B1EE1898D

42570E7F90AB12CD0FAA532676AE3E02B4EDC82FAA8BF0298A9E5A8B724BE2FD

12288:0M5s0BbaqvIzJpM1kSwiWvVFKQaBWAdM2rppP1ipIFvX:00Gqw7MuSwFM3ZppHxX

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Application was dropped or rewritten from another process

Loads dropped or rewritten executable

Changes settings of System certificates

SUSPICIOUS

Executable content was dropped or overwritten

Adds / modifies Windows certificates

Connects to unusual port

INFO

Malware configuration

Static information

TRiD

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings