Malware analysis Dllhost.zip Malicious activity | ANY.RUN

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File name:	Dllhost.zip
Full analysis:	https://app.any.run/tasks/0fc1ed27-b026-412f-900e-daaaf9757380
Verdict:	Malicious activity
Threats:	njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world. njRAT ist ein Trojaner für den Fernzugriff. Es handelt sich um einen der am weitesten verbreiteten RATs auf dem Markt, der eine Fülle von Bildungsinformationen bietet. Interessierte Angreifer können sogar Tutorials auf YouTube finden. Dies macht ihn zu einem der beliebtesten RATs der Welt. 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:	September 18, 2019, 19:16:41
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	trojan rat njrat bladabindi
Indicators:
MIME:	application/zip
File info:	Zip archive data, at least v2.0 to extract
MD5:	0017CD8941F319171D48080017BA314B
SHA1:	9B562C431ADCCBF4235CE27C5F9E13745B74A8B5
SHA256:	A8D4E942478565B23543E212540D69CC71D3AE10D8DE1064F7A953971ECCEA97
SSDEEP:	384:4AYmJ4JNAheqScQDZjbFSMl+buojvAWHas6TM8kZ7fw+G9e30KWTClxLNp8h4:HYmaVFc0eMYKWuTM8khAbK3xLPX

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 (75.0.3770.100)
Google Update Helper (1.3.34.7)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.7.2 (4.7.03062)
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++ 2015-2019 Redistributable (x86) - 14.21.27702 (14.21.27702.2)
Microsoft Visual C++ 2019 X86 Additional Runtime - 14.21.27702 (14.21.27702)
Microsoft Visual C++ 2019 X86 Minimum Runtime - 14.21.27702 (14.21.27702)
Mozilla Firefox 68.0.1 (x86 en-US) (68.0.1)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
Update for Microsoft .NET Framework 4.7.2 (KB4087364) (1)
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
KB4019990
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
  - Dllhost.exe (PID: 3976)
  - Dllhost.exe (PID: 752)
  - Dllhost.exe (PID: 3020)
  - Dllhost.exe (PID: 356)
- Writes to a start menu file
  - Dllhost.exe (PID: 3976)
- NJRAT was detected
  - Dllhost.exe (PID: 3976)
- Connects to CnC server
  - Dllhost.exe (PID: 3976)
- Changes the autorun value in the registry
  - Dllhost.exe (PID: 3976)
SUSPICIOUS
- Creates files in the user directory
  - Dllhost.exe (PID: 752)
  - Dllhost.exe (PID: 3976)
- Starts itself from another location
  - Dllhost.exe (PID: 752)
- Executable content was dropped or overwritten
  - Dllhost.exe (PID: 752)
  - Dllhost.exe (PID: 3976)
- Connects to unusual port
  - Dllhost.exe (PID: 3976)
INFO
- Manual execution by user
  - Dllhost.exe (PID: 752)
  - Dllhost.exe (PID: 3020)
  - Dllhost.exe (PID: 356)

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

.zip	\|	ZIP compressed archive (100)

EXIF

ZIP

ZipRequiredVersion:	20
ZipBitFlag:	-
ZipCompression:	Deflated
ZipModifyDate:	2019:09:16 10:57:07
ZipCRC:	0xaffa3c08
ZipCompressedSize:	22036
ZipUncompressedSize:	25879
ZipFileName:	Dllhost.exe

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

356

"C:\Users\admin\Desktop\Dllhost.exe"

C:\Users\admin\Desktop\Dllhost.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\desktop\dllhost.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\kernel32.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

752

"C:\Users\admin\Desktop\Dllhost.exe"

C:\Users\admin\Desktop\Dllhost.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\desktop\dllhost.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

2876

"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\Dllhost.zip"

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\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\comdlg32.dll

3020

"C:\Users\admin\Desktop\Dllhost.exe"

C:\Users\admin\Desktop\Dllhost.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\desktop\dllhost.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

3976

"C:\Users\admin\AppData\Roaming\Dllhost.exe"

C:\Users\admin\AppData\Roaming\Dllhost.exe

Dllhost.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\appdata\roaming\dllhost.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

1 092

Read events

832

Write events

260

Delete events

Modification events


(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes
Operation:	write	Name:	ShellExtBMP
Value:
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\Interface\Themes
Operation:	write	Name:	ShellExtIcon
Value:
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\MuiCache\72\52C64B7E
Operation:	write	Name:	LanguageList
Value: en-US
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\ArcHistory
Operation:	write	Name:	0
Value: C:\Users\admin\AppData\Local\Temp\Dllhost.zip
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	name
Value: 120
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	type
Value: 120
(PID) Process:	(2876) WinRAR.exe	Key:	HKEY_CURRENT_USER\Software\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	mtime
Value: 100
(PID) Process:	(752) Dllhost.exe	Key:	HKEY_CURRENT_USER
Operation:	write	Name:	di
Value: !
(PID) Process:	(752) Dllhost.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	UNCAsIntranet
Value: 0

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2876	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2876.26135\Dllhost.exe		—
		MD5:—	SHA256:—
752	Dllhost.exe	C:\Users\admin\AppData\Roaming\Dllhost.exe		executable
		MD5:—	SHA256:—
3976	Dllhost.exe	C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe		executable
		MD5:—	SHA256:—

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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
3976	Dllhost.exe	186.170.66.60:5860	cobroserfinansa.com	COLOMBIA TELECOMUNICACIONES S.A. ESP	CO	malicious

DNS requests

Domain	IP	Reputation
cobroserfinansa.com	186.170.66.60	malicious

Threats

PID	Process	Class	Message
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT/Bladabindi
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT.Gen RAT outbound connection
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT/Bladabindi
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT.Gen RAT outbound connection
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT/Bladabindi
3976	Dllhost.exe	A Network Trojan was detected	MALWARE [PTsecurity] njRAT.Gen RAT outbound connection

8 ETPRO signatures available at the full report

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No debug info

General Info

Dllhost.zip

0017CD8941F319171D48080017BA314B

9B562C431ADCCBF4235CE27C5F9E13745B74A8B5

A8D4E942478565B23543E212540D69CC71D3AE10D8DE1064F7A953971ECCEA97

384:4AYmJ4JNAheqScQDZjbFSMl+buojvAWHas6TM8kZ7fw+G9e30KWTClxLNp8h4:HYmaVFc0eMYKWuTM8khAbK3xLPX

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Application was dropped or rewritten from another process

Writes to a start menu file

NJRAT was detected

Connects to CnC server

Changes the autorun value in the registry

SUSPICIOUS

Creates files in the user directory

Starts itself from another location

Executable content was dropped or overwritten

Connects to unusual port

INFO

Manual execution by user

Malware configuration

Static information

TRiD

EXIF

ZIP

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings