Malware analysis cool-android-assistant.exe Malicious activity

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download:	cool-android-assistant.exe
Full analysis:	https://app.any.run/tasks/cb80b7b9-3844-4ba1-a705-01000d1bb105
Verdict:	Malicious activity
Analysis date:	April 25, 2019, 06:50:38
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME:	application/x-dosexec
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive
MD5:	B6033D67611EA2D1150BF7F5A4795D6A
SHA1:	50A9208D140A5D472FFF8B0A59C687DC379478AE
SHA256:	E09BEA12C4D3C9C7A112A3FC7DB3E689A1F177ABE2351DA4C89A9CBF3EF3AD92
SSDEEP:	393216:q/EpmecejCm0g1r+Mu4vu0BaSEejQam1b+fnNSQDsKLSbyvA:qjeVjCmLMMjv5saZnNSRKY5

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
- Loads dropped or rewritten executable
  - cool-android-assistant.exe (PID: 2352)
  - Coolmuster Android Assistant.exe (PID: 3596)
  - iexplore.exe (PID: 3236)
- Application was dropped or rewritten from another process
  - Coolmuster Android Assistant.exe (PID: 3596)
SUSPICIOUS
- Creates a software uninstall entry
  - cool-android-assistant.exe (PID: 2352)
- Creates files in the user directory
  - cool-android-assistant.exe (PID: 2352)
  - Coolmuster Android Assistant.exe (PID: 3596)
- Executable content was dropped or overwritten
  - cool-android-assistant.exe (PID: 2352)
- Starts Internet Explorer
  - cool-android-assistant.exe (PID: 2352)
- Creates files in the program directory
  - cool-android-assistant.exe (PID: 2352)
INFO
- Creates files in the user directory
  - iexplore.exe (PID: 3236)
- Changes internet zones settings
  - iexplore.exe (PID: 2660)
- Changes settings of System certificates
  - iexplore.exe (PID: 3236)
- Reads internet explorer settings
  - iexplore.exe (PID: 3236)
- Adds / modifies Windows certificates
  - iexplore.exe (PID: 3236)

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

.exe	\|	Win32 Executable (generic) (52.9)
.exe	\|	Generic Win/DOS Executable (23.5)
.exe	\|	DOS Executable Generic (23.5)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2016:12:11 22:50:38+01:00
PEType:	PE32
LinkerVersion:	6
CodeSize:	24064
InitializedDataSize:	118272
UninitializedDataSize:	1024
EntryPoint:	0x316d
OSVersion:	4
ImageVersion:	6
SubsystemVersion:	4
Subsystem:	Windows GUI

Summary

Architecture:	IMAGE_FILE_MACHINE_I386
Subsystem:	IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date:	11-Dec-2016 21:50:38
Detected languages:	English - United States

DOS Header

Magic number:	MZ
Bytes on last page of file:	0x0090
Pages in file:	0x0003
Relocations:	0x0000
Size of header:	0x0004
Min extra paragraphs:	0x0000
Max extra paragraphs:	0xFFFF
Initial SS value:	0x0000
Initial SP value:	0x00B8
Checksum:	0x0000
Initial IP value:	0x0000
Initial CS value:	0x0000
Overlay number:	0x0000
OEM identifier:	0x0000
OEM information:	0x0000
Address of NE header:	0x000000D8

PE Headers

Signature:	PE
Machine:	IMAGE_FILE_MACHINE_I386
Number of sections:	5
Time date stamp:	11-Dec-2016 21:50:38
Pointer to Symbol Table:	0x00000000
Number of symbols:	0
Size of Optional Header:	0x00E0
Characteristics:	IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_RELOCS_STRIPPED

Sections

Name	Virtual Address	Virtual Size	Raw Size	Charateristics	Entropy
.text	0x00001000	0x00005CEF	0x00005E00	IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ	6.44129
.rdata	0x00007000	0x00001246	0x00001400	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ	5.00503
.data	0x00009000	0x0001A7F8	0x00000400	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	5.1145
.ndata	0x00024000	0x00014000	0x00000000	IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE	0
.rsrc	0x00038000	0x0005C410	0x0005C600	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ	5.52795

Resources

Title	Entropy	Size	Codepage	Language	Type
1	5.28813	1070	UNKNOWN	English - United States	RT_MANIFEST
2	5.56583	67624	UNKNOWN	English - United States	RT_ICON
3	5.82717	16936	UNKNOWN	English - United States	RT_ICON
4	5.86831	9640	UNKNOWN	English - United States	RT_ICON
5	6.05389	4264	UNKNOWN	English - United States	RT_ICON
102	2.71813	180	UNKNOWN	English - United States	RT_DIALOG
103	2.68364	76	UNKNOWN	English - United States	RT_GROUP_ICON
105	2.68372	512	UNKNOWN	English - United States	RT_DIALOG
106	2.91148	248	UNKNOWN	English - United States	RT_DIALOG
107	2.52183	160	UNKNOWN	English - United States	RT_DIALOG

Imports


ADVAPI32.dll
COMCTL32.dll
GDI32.dll
KERNEL32.dll
SHELL32.dll
USER32.dll
ole32.dll

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

928

"C:\Users\admin\AppData\Local\Temp\cool-android-assistant.exe"

C:\Users\admin\AppData\Local\Temp\cool-android-assistant.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221226540

Modules

Images
c:\users\admin\appdata\local\temp\cool-android-assistant.exe
c:\systemroot\system32\ntdll.dll

2352

"C:\Users\admin\AppData\Local\Temp\cool-android-assistant.exe"

C:\Users\admin\AppData\Local\Temp\cool-android-assistant.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Exit code:

Modules

Images
c:\users\admin\appdata\local\temp\cool-android-assistant.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\shell32.dll

2660

"C:\Program Files\Internet Explorer\iexplore.exe" -nohome

C:\Program Files\Internet Explorer\iexplore.exe

cool-android-assistant.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Internet Explorer

Exit code:

Version:

8.00.7600.16385 (win7_rtm.090713-1255)

Modules

Images
c:\program files\internet explorer\iexplore.exe
c:\systemroot\system32\ntdll.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\system32\user32.dll
c:\windows\system32\gdi32.dll

3236

"C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:2660 CREDAT:79873

C:\Program Files\Internet Explorer\iexplore.exe

iexplore.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Internet Explorer

Exit code:

Version:

8.00.7600.16385 (win7_rtm.090713-1255)

Modules

Images
c:\program files\internet explorer\iexplore.exe
c:\systemroot\system32\ntdll.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\system32\user32.dll
c:\windows\system32\gdi32.dll

3596

"C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\Coolmuster Android Assistant.exe"

C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\Coolmuster Android Assistant.exe

—

cool-android-assistant.exe

User:

admin

Integrity Level:

HIGH

Description:

ProductRecommendPlatform Module

Exit code:

Version:

1.0.2.1

Modules

Images
c:\program files\coolmuster\coolmuster android assistant\4.3.512\bin\coolmuster android assistant.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\coolmuster\coolmuster android assistant\4.3.512\bin\libbasic.dll
c:\program files\coolmuster\coolmuster android assistant\4.3.512\bin\libzvc125.dll
c:\program files\coolmuster\coolmuster android assistant\4.3.512\bin\msvcr100.dll
c:\windows\winsxs\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.7601.17514_none_72d18a4386696c80\gdiplus.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll

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Total events

713

Read events

637

Write events

Delete events

Modification events


(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	DisplayName
Value: Coolmuster Android Assistant
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	DisplayIcon
Value: "C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\Coolmuster Android Assistant.exe"
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	Publisher
Value: Coolmuster
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	DisplayVersion
Value: 4.3.512
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	VersionMajor
Value: 4
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	VersionMinor
Value: 3
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	EstimatedSize
Value: 960
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	HelpLink
Value: http://www.coolmuster.com
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	URLInfoAbout
Value: http://www.coolmuster.com
(PID) Process:	(2352) cool-android-assistant.exe	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Coolmuster Android Assistant
Operation:	write	Name:	InstallLocation
Value: C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512

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Executable files

Suspicious files

Text files

264

Unknown types

Dropped files

PID	Process	Filename		Type
2352	cool-android-assistant.exe	C:\Users\admin\AppData\Local\Temp\nsh8A12.tmp\modern-wizard.bmp		—
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Toolbox.json		text
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\Coolmuster Android Assistant.exe		executable
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\license.txt		text
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Option.json		text
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\AdbWinUsbApi.dll		executable
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\uninst.exe		executable
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\Android Assistant.exe		executable
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\AndroidAssistServer.exe		executable
		MD5:—	SHA256:—
2352	cool-android-assistant.exe	C:\Program Files\Coolmuster\Coolmuster Android Assistant\4.3.512\Bin\AndroidAssistService.exe		executable
		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

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
2660	iexplore.exe	GET	200	204.79.197.200:80	http://www.bing.com/favicon.ico	US	image	237 b	whitelisted

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
3236	iexplore.exe	198.12.154.136:443	www.coolmuster.com	GoDaddy.com, LLC	US	unknown
2660	iexplore.exe	204.79.197.200:80	www.bing.com	Microsoft Corporation	US	whitelisted
—	—	198.12.154.136:443	www.coolmuster.com	GoDaddy.com, LLC	US	unknown
3236	iexplore.exe	173.194.76.97:443	ssl.google-analytics.com	Google Inc.	US	whitelisted

DNS requests

Domain	IP	Reputation
www.coolmuster.com	198.12.154.136	suspicious
www.bing.com	204.79.197.200 13.107.21.200	whitelisted
ssl.google-analytics.com	173.194.76.97	whitelisted

Threats

No threats detected

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No debug info

General Info

cool-android-assistant.exe

B6033D67611EA2D1150BF7F5A4795D6A

50A9208D140A5D472FFF8B0A59C687DC379478AE

E09BEA12C4D3C9C7A112A3FC7DB3E689A1F177ABE2351DA4C89A9CBF3EF3AD92

393216:q/EpmecejCm0g1r+Mu4vu0BaSEejQam1b+fnNSQDsKLSbyvA:qjeVjCmLMMjv5saZnNSRKY5

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Loads dropped or rewritten executable

Application was dropped or rewritten from another process

SUSPICIOUS

Creates a software uninstall entry

Creates files in the user directory

Executable content was dropped or overwritten

Starts Internet Explorer

Creates files in the program directory

INFO

Creates files in the user directory

Changes internet zones settings

Changes settings of System certificates

Reads internet explorer settings

Adds / modifies Windows certificates

Malware configuration

Static information

TRiD

EXIF

EXE

Summary

DOS Header

PE Headers

Sections

Resources

Imports

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