Malware analysis CryptoWall.exe Malicious activity | ANY.RUN

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File name:	CryptoWall.exe
Full analysis:	https://app.any.run/tasks/dfa4d9ac-b767-4045-9093-147dbd9721a7
Verdict:	Malicious activity
Analysis date:	October 01, 2024, 16:17:09
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	evasion
Indicators:
MIME:	application/x-dosexec
File info:	PE32 executable (GUI) Intel 80386, for MS Windows
MD5:	919034C8EFB9678F96B47A20FA6199F2
SHA1:	747070C74D0400CFFEB28FBEA17B64297F14CFBD
SHA256:	E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
SSDEEP:	3072:g+MaP6ghoGAi6WCqGcnzlLBmX96Gep2pr9anUUxYZ5axIVmmSnEv98NeyPpBSBDS:lRoqoY7AmRliBAF

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:
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 11.3636.19041.0
Adobe Acrobat (64-bit) (23.001.20093)
Adobe Flash Player 32 NPAPI (32.0.0.465)
Adobe Flash Player 32 PPAPI (32.0.0.465)
CCleaner (6.20)
FileZilla 3.65.0 (3.65.0)
Google Chrome (122.0.6261.70)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Microsoft Edge (122.0.2365.59)
Microsoft Edge Update (1.3.185.17)
Microsoft Office Professional 2019 - de-de (16.0.16026.20146)
Microsoft Office Professional 2019 - en-us (16.0.16026.20146)
Microsoft Office Professional 2019 - es-es (16.0.16026.20146)
Microsoft Office Professional 2019 - it-it (16.0.16026.20146)
Microsoft Office Professional 2019 - ja-jp (16.0.16026.20146)
Microsoft Office Professional 2019 - ko-kr (16.0.16026.20146)
Microsoft Office Professional 2019 - pt-br (16.0.16026.20146)
Microsoft Office Professional 2019 - tr-tr (16.0.16026.20146)
Microsoft Office Professionnel 2019 - fr-fr (16.0.16026.20146)
Microsoft Office профессиональный 2019 - ru-ru (16.0.16026.20146)
Microsoft OneNote - en-us (16.0.16026.20146)
Microsoft Update Health Tools (3.74.0.0)
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2022 X64 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X64 Minimum Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Minimum Runtime - 14.36.32532 (14.36.32532)
Mozilla Firefox (x64 en-US) (123.0)
Mozilla Maintenance Service (123.0)
Notepad++ (64-bit x64) (7.9.1)
Office 16 Click-to-Run Extensibility Component (16.0.15726.20202)
Office 16 Click-to-Run Licensing Component (16.0.16026.20146)
Office 16 Click-to-Run Localization Component (16.0.15726.20202)
Office 16 Click-to-Run Localization Component (16.0.15928.20198)
PowerShell 7-x64 (7.3.5.0)
Skype version 8.104 (8.104)
Update for Windows 10 for x64-based Systems (KB4023057) (2.59.0.0)
Update for Windows 10 for x64-based Systems (KB4023057) (2.63.0.0)
Update for Windows 10 for x64-based Systems (KB4480730) (2.55.0.0)
Update for Windows 10 for x64-based Systems (KB5001716) (8.93.0.0)
VLC media player (3.0.11)
WinRAR 5.91 (64-bit) (5.91.0)
Windows PC Health Check (3.6.2204.08001)

Hotfixes

Client LanguagePack Package
DotNetRollup
DotNetRollup 481
FodMetadata Package
Foundation Package
Hello Face Package
InternetExplorer Optional Package
KB5003791
KB5011048
KB5015684
KB5033052
LanguageFeatures Basic en us Package
LanguageFeatures Handwriting en us Package
LanguageFeatures OCR en us Package
LanguageFeatures Speech en us Package
LanguageFeatures TextToSpeech en us Package
MSPaint FoD Package
MediaPlayer Package
Microsoft OneCore ApplicationModel Sync Desktop FOD Package
Microsoft OneCore DirectX Database FOD Package
NetFx3 OnDemand Package
Notepad FoD Package
OpenSSH Client Package
PowerShell ISE FOD Package
Printing PMCPPC FoD Package
Printing WFS FoD Package
ProfessionalEdition
QuickAssist Package
RollupFix
ServicingStack
ServicingStack 3989
StepsRecorder Package
TabletPCMath Package
UserExperience Desktop Package
WordPad FoD Package

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MALICIOUS
- Changes the autorun value in the registry
  - explorer.exe (PID: 1332)
- Create files in the Startup directory
  - explorer.exe (PID: 1332)
SUSPICIOUS
- Executable content was dropped or overwritten
  - explorer.exe (PID: 1332)
- Checks for external IP
  - svchost.exe (PID: 5724)
- Connects to unusual port
  - svchost.exe (PID: 5724)
INFO
- Reads the machine GUID from the registry
  - CryptoWall.exe (PID: 6668)
- Checks supported languages
  - CryptoWall.exe (PID: 6668)
- Creates files or folders in the user directory
  - explorer.exe (PID: 1332)
- Reads security settings of Internet Explorer
  - svchost.exe (PID: 5724)
- Checks proxy server information
  - svchost.exe (PID: 5724)

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:	2015:01:09 19:13:02+00:00
ImageFileCharacteristics:	Executable, 32-bit
PEType:	PE32
LinkerVersion:	12
CodeSize:	91136
InitializedDataSize:	44544
UninitializedDataSize:	-
EntryPoint:	0x170b0
OSVersion:	5.1
ImageVersion:	-
SubsystemVersion:	5.1
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

138

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1332

"C:\WINDOWS\syswow64\explorer.exe"

C:\Windows\SysWOW64\explorer.exe

CryptoWall.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Explorer

Exit code:

Version:

10.0.19041.3758 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\explorer.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcp_win.dll

5724

-k netsvcs

C:\Windows\SysWOW64\svchost.exe

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Host Process for Windows Services

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\sechost.dll
c:\windows\syswow64\rpcrt4.dll

6668

"C:\Users\admin\AppData\Local\Temp\CryptoWall.exe"

C:\Users\admin\AppData\Local\Temp\CryptoWall.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\appdata\local\temp\cryptowall.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\advapi32.dll

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Total events

759

Read events

755

Write events

Delete events

Modification events


(PID) Process:	(1332) explorer.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:	write	Name:	81dfcd3
Value: C:\81dfcd3e\81dfcd3e.exe
(PID) Process:	(1332) explorer.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
Operation:	write	Name:	*1dfcd3
Value: C:\81dfcd3e\81dfcd3e.exe
(PID) Process:	(1332) explorer.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:	write	Name:	81dfcd3e
Value: C:\Users\admin\AppData\Roaming\81dfcd3e.exe
(PID) Process:	(1332) explorer.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
Operation:	write	Name:	*1dfcd3e
Value: C:\Users\admin\AppData\Roaming\81dfcd3e.exe

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
1332	explorer.exe	C:\Users\admin\AppData\Roaming\81dfcd3e.exe		executable
		MD5:919034C8EFB9678F96B47A20FA6199F2	SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
5724	svchost.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751		binary
		MD5:3DFCA46E00FFA4795C72A41375F159D3	SHA256:DCBA1A505396539BAC40A7253C9F5DCCF06CBB79957E21D56305E1FC3AF5F40E
1332	explorer.exe	C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\81dfcd3e.exe		executable
		MD5:919034C8EFB9678F96B47A20FA6199F2	SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
1332	explorer.exe	C:\81dfcd3e\81dfcd3e.exe		executable
		MD5:919034C8EFB9678F96B47A20FA6199F2	SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734

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
5000	svchost.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
5724	svchost.exe	GET	308	188.165.164.184:80	http://ip-addr.es/	unknown	—	—	shared
1132	svchost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
3508	backgroundTaskHost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D	unknown	—	—	whitelisted
1008	SIHClient.exe	GET	200	88.221.169.152:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
1008	SIHClient.exe	GET	200	88.221.169.152:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted
2968	svchost.exe	GET	304	69.192.161.44:80	http://x1.c.lencr.org/	unknown	—	—	whitelisted
5724	svchost.exe	GET	308	188.165.164.184:80	http://ip-addr.es/	unknown	—	—	shared
5336	SearchApp.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEA77flR%2B3w%2FxBpruV2lte6A%3D	unknown	—	—	whitelisted
5336	SearchApp.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted

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

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
—	—	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
5000	svchost.exe	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
3888	svchost.exe	239.255.255.250:1900	—	—	—	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5724	svchost.exe	188.165.164.184:80	ip-addr.es	OVH SAS	FR	shared
5724	svchost.exe	188.165.164.184:443	ip-addr.es	OVH SAS	FR	shared
5724	svchost.exe	91.121.12.127:4141	—	OVH SAS	FR	unknown
5000	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4324	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	51.104.136.2	whitelisted
www.microsoft.com	184.30.21.171 88.221.169.152	whitelisted
google.com	142.250.186.110	whitelisted
ip-addr.es	188.165.164.184	shared
login.live.com	40.126.31.73 20.190.159.71 40.126.31.69 40.126.31.67 20.190.159.0 20.190.159.68 20.190.159.2 20.190.159.4	whitelisted
ocsp.digicert.com	192.229.221.95	whitelisted
client.wns.windows.com	40.115.3.253	whitelisted
go.microsoft.com	23.213.166.81	whitelisted
arc.msn.com	20.223.36.55	whitelisted
fd.api.iris.microsoft.com	20.199.58.43	whitelisted

Threats

PID	Process	Class	Message
5724	svchost.exe	Device Retrieving External IP Address Detected	ET INFO HTTP Request for External IP Check (ip-addr .es)
5724	svchost.exe	Device Retrieving External IP Address Detected	ET INFO HTTP Request for External IP Check (ip-addr .es)

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No debug info

General Info

CryptoWall.exe

919034C8EFB9678F96B47A20FA6199F2

747070C74D0400CFFEB28FBEA17B64297F14CFBD

E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734

3072:g+MaP6ghoGAi6WCqGcnzlLBmX96Gep2pr9anUUxYZ5axIVmmSnEv98NeyPpBSBDS:lRoqoY7AmRliBAF

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Changes the autorun value in the registry

Create files in the Startup directory

SUSPICIOUS

Executable content was dropped or overwritten

Checks for external IP

Connects to unusual port

INFO

Reads the machine GUID from the registry

Checks supported languages

Creates files or folders in the user directory

Reads security settings of Internet Explorer

Checks proxy server information

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

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