Malware analysis cs137.exe Malicious activity | ANY.RUN

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File name:	cs137.exe
Full analysis:	https://app.any.run/tasks/c5a91a24-04bf-45b6-ac0f-e81701ce3593
Verdict:	Malicious activity
Threats:	Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. Malware Trends Tracker >>>
Analysis date:	January 05, 2025, 03:14:32
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	ransomware
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (console) x86-64, for MS Windows, 3 sections
MD5:	E95B6BD0A92A8AE4CCF0FBCBAE826938
SHA1:	F3D7088B692929CF10639DBF499C48A7692CDD9D
SHA256:	7E23AF5876349B5C36DFD2176F76782462F76A89262F9664A38DE888BCF733BD
SSDEEP:	6144:mTVYSfjOn59IuxJPKfHDRw8z9E2Kx1Gr3lXXhTdeTYB:mpYS65vxJyfjRdpEZx1cVhxeTYB

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:
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 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
- RANSOMWARE has been detected
  - cs137.exe (PID: 2260)
SUSPICIOUS
- Changes the desktop background image
  - cs137.exe (PID: 2260)
INFO
- Create files in a temporary directory
  - cs137.exe (PID: 2260)
- Reads the computer name
  - cs137.exe (PID: 2260)
- Checks supported languages
  - cs137.exe (PID: 2260)
- Manual execution by a user
  - mspaint.exe (PID: 6768)

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	\|	UPX compressed Win32 Executable (87.1)
.exe	\|	Generic Win/DOS Executable (6.4)
.exe	\|	DOS Executable Generic (6.4)

EXIF

EXE

MachineType:	AMD AMD64
TimeStamp:	2025:01:05 03:14:47+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14.32
CodeSize:	262144
InitializedDataSize:	4096
UninitializedDataSize:	282624
EntryPoint:	0x85ad0
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows command line

No data.

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All screenshots are available in the full report

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Total processes

126

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

2212

\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1

C:\Windows\System32\conhost.exe

—

cs137.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Console Window Host

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll

2260

"C:\Users\admin\AppData\Local\Temp\cs137.exe"

C:\Users\admin\AppData\Local\Temp\cs137.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\appdata\local\temp\cs137.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll

6768

"C:\WINDOWS\system32\mspaint.exe" "C:\Users\admin\Desktop\whichbuilt.png"

C:\Windows\System32\mspaint.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Paint

Exit code:

Version:

10.0.19041.3758 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\mspaint.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\acgenral.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll

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Total events

490

Read events

459

Write events

Delete events

Modification events


(PID) Process:	(2260) cs137.exe	Key:	HKEY_CURRENT_USER\Control Panel\Desktop
Operation:	write	Name:	TileWallpaper
Value: 0
(PID) Process:	(2260) cs137.exe	Key:	HKEY_CURRENT_USER\Control Panel\Desktop
Operation:	write	Name:	WallpaperStyle
Value: 2
(PID) Process:	(2260) cs137.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Desktop\General
Operation:	write	Name:	WallpaperSource
Value: C:\Users\admin\AppData\Local\Temp\wallpaper74743.jpg
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	WindowPlacement
Value: 2C0000000000000001000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF9C0000009C0000005C04000085020000
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	ShowThumbnail
Value: 0
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	BMPWidth
Value: 0
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	BMPHeight
Value: 0
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	ThumbXPos
Value: 0
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	ThumbYPos
Value: 0
(PID) Process:	(6768) mspaint.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Applets\Paint\View
Operation:	write	Name:	ThumbWidth
Value: 0

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2260	cs137.exe	C:\Users\admin\Desktop\mountainend.rtf		binary
		MD5:255C267D3DCE8E28E77B0D6AD2FA51A7	SHA256:27FED5ECD3C43F85C9D8F35B92FD0882C98F1878F66D28E757628108665A2171
2260	cs137.exe	C:\Users\admin\Desktop\housenotes.png		binary
		MD5:89352A4C86CEDC761697DFF97D050F1D	SHA256:372F6F5AE219569ACE5D5085057CAEEE36E5BC30A17E827F6AB568AABE0B4762
2260	cs137.exe	C:\Users\admin\Desktop\sheetteens.rtf		binary
		MD5:842095ECC8B527B1DF13E24104345303	SHA256:5D72523ACE444BA127CB48CF50E3CBEE3A7D57B98F437B13DDD221BA0C9FC2AF
2260	cs137.exe	C:\Users\admin\Desktop\tellas.png		binary
		MD5:7CA1C0527E78AE07C54C270D805D53EF	SHA256:CB3B83004AF1363FCF9DB95D8A4E486DA7D6B08E0EBDA834430EFD6EFCDB9930
2260	cs137.exe	C:\Users\admin\Documents\Outlook Files\Outlook.pst		binary
		MD5:0DE9CCB7AA73D81078A6187F78C2128E	SHA256:1E0F5CDD191D84FFFA453B78E7013E7602247EE21B7848017B788B3727AFB402
2260	cs137.exe	C:\Users\admin\Desktop\greattheory.png		binary
		MD5:FE5EB4A70979F706A1B353904A80FF1C	SHA256:DB888425B479E18D73FA44019249678D15299570758326D642317044143B2B98
2260	cs137.exe	C:\Users\admin\Documents\opportunitiesincreased.rtf		binary
		MD5:663227A941A91209C53D2FD9464E2F8D	SHA256:2B4C5925E035AE785BA7FBE4792AE0EBC1B48BFFE9FF27F2F0C1BEA7AB0844D9
2260	cs137.exe	C:\Users\admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2		binary
		MD5:E37A68740646739EA8282C591C2A80F5	SHA256:CE964B51AC3022C925C2765D88867E4418C002647E9CFF05003789363A599DD7
2260	cs137.exe	C:\Users\admin\Documents\PowerShell\Modules\PSSQLite\1.1.0\core\osx-x64\SQLite.Interop.dll		binary
		MD5:D5EA86A7D84623CF458DC971E6AFB5F3	SHA256:23E5BC5A54691F6337D730E5532990520EA487C11F0A8A32793AE248B46C9F22
2260	cs137.exe	C:\Users\admin\Documents\PowerShell\Modules\PSSQLite\1.1.0\core\linux-x64\SQLite.Interop.dll		binary
		MD5:FDDBB4A571BC27005F78460106618BCD	SHA256:6632DBC7CF758EC5287DC713CF5605549C1C8C876989A541F4E769EBB1608836

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
—	—	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
—	—	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
—	—	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
5064	SearchApp.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted
—	—	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
1176	svchost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
3884	RUXIMICS.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
—	—	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	23.216.77.28:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
—	—	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5064	SearchApp.exe	104.126.37.131:443	www.bing.com	Akamai International B.V.	DE	whitelisted
5064	SearchApp.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted
1176	svchost.exe	20.190.159.64:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
1176	svchost.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158	whitelisted
crl.microsoft.com	23.216.77.28 23.216.77.6	whitelisted
www.microsoft.com	184.30.21.171	whitelisted
google.com	172.217.16.142	whitelisted
www.bing.com	104.126.37.131 104.126.37.145	whitelisted
ocsp.digicert.com	192.229.221.95	whitelisted
login.live.com	20.190.159.64 20.190.159.0 20.190.159.2 20.190.159.75 20.190.159.68 20.190.159.23 40.126.31.71 40.126.31.73	whitelisted
go.microsoft.com	184.30.17.189	whitelisted

Threats

No threats detected

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No debug info

General Info

cs137.exe

E95B6BD0A92A8AE4CCF0FBCBAE826938

F3D7088B692929CF10639DBF499C48A7692CDD9D

7E23AF5876349B5C36DFD2176F76782462F76A89262F9664A38DE888BCF733BD

6144:mTVYSfjOn59IuxJPKfHDRw8z9E2Kx1Gr3lXXhTdeTYB:mpYS65vxJyfjRdpEZx1cVhxeTYB

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

RANSOMWARE has been detected

SUSPICIOUS

Changes the desktop background image

INFO

Create files in a temporary directory

Reads the computer name

Checks supported languages

Manual execution by a user

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