File name:

CryptoWall.exe

Full analysis: https://app.any.run/tasks/9d0b3d6c-e735-4474-9d6c-89768e5198e0
Verdict: Malicious activity
Analysis date: June 21, 2025, 21:01:36
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
evasion
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, 4 sections
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.

  • MALICIOUS

    • Changes the autorun value in the registry

      • explorer.exe (PID: 6680)

    • Create files in the Startup directory

      • explorer.exe (PID: 6680)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • explorer.exe (PID: 6680)

    • Checks for external IP

      • svchost.exe (PID: 6508)

    • Connects to unusual port

      • svchost.exe (PID: 6508)

  • INFO

    • Reads the machine GUID from the registry

      • CryptoWall.exe (PID: 7100)
      • 81dfcd3e.exe (PID: 3864)
      • 81dfcd3e.exe (PID: 3148)
      • 81dfcd3e.exe (PID: 6472)

    • Creates files or folders in the user directory

      • explorer.exe (PID: 6680)

    • Launching a file from the Startup directory

      • explorer.exe (PID: 6680)

    • Manual execution by a user

      • 81dfcd3e.exe (PID: 3148)
      • 81dfcd3e.exe (PID: 6472)
      • 81dfcd3e.exe (PID: 3864)

    • Checks supported languages

      • 81dfcd3e.exe (PID: 3148)
      • CryptoWall.exe (PID: 7100)
      • 81dfcd3e.exe (PID: 3864)
      • 81dfcd3e.exe (PID: 6472)

    • Checks proxy server information

      • svchost.exe (PID: 6508)

    • Launching a file from a Registry key

      • explorer.exe (PID: 6680)

    • Reads security settings of Internet Explorer

      • svchost.exe (PID: 6508)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
142
Monitored processes
6
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start cryptowall.exe no specs explorer.exe svchost.exe 81dfcd3e.exe no specs 81dfcd3e.exe no specs 81dfcd3e.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
3148C:\81dfcd3e\81dfcd3e.exeC:\81dfcd3e\81dfcd3e.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\81dfcd3e\81dfcd3e.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
3864"C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\81dfcd3e.exe"C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\81dfcd3e.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\roaming\microsoft\windows\start menu\programs\startup\81dfcd3e.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
6472C:\Users\admin\AppData\Roaming\81dfcd3e.exeC:\Users\admin\AppData\Roaming\81dfcd3e.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\roaming\81dfcd3e.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
6508-k netsvcsC:\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
6680"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:
0
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
7100"C:\Users\admin\Desktop\CryptoWall.exe" C:\Users\admin\Desktop\CryptoWall.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\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
Total events
1 001
Read events
997
Write events
4
Delete events
0

Modification events

(PID) Process:(6680) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:81dfcd3
Value:
C:\81dfcd3e\81dfcd3e.exe
(PID) Process:(6680) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
Operation:writeName:*1dfcd3
Value:
C:\81dfcd3e\81dfcd3e.exe
(PID) Process:(6680) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:81dfcd3e
Value:
C:\Users\admin\AppData\Roaming\81dfcd3e.exe
(PID) Process:(6680) explorer.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce
Operation:writeName:*1dfcd3e
Value:
C:\Users\admin\AppData\Roaming\81dfcd3e.exe
Executable files
3
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
6680explorer.exeC:\81dfcd3e\81dfcd3e.exeexecutable
MD5:919034C8EFB9678F96B47A20FA6199F2
SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
6680explorer.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\81dfcd3e.exeexecutable
MD5:919034C8EFB9678F96B47A20FA6199F2
SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
6680explorer.exeC:\Users\admin\AppData\Roaming\81dfcd3e.exeexecutable
MD5:919034C8EFB9678F96B47A20FA6199F2
SHA256:E036D68B8F8B7AFC6C8B6252876E1E290F11A26D4AD18AC6F310662845B2C734
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
6
TCP/UDP connections
27
DNS requests
15
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
436
svchost.exe
GET
200
2.17.190.73:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
—
—
whitelisted
1268
svchost.exe
GET
200
23.53.40.178:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
6540
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
—
—
whitelisted
6508
svchost.exe
GET
308
188.165.164.184:80
http://ip-addr.es/
unknown
—
—
shared
1268
svchost.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
6540
SIHClient.exe
GET
200
23.35.229.160:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
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
5944
MoUsoCoreWorker.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
1268
svchost.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
1508
RUXIMICS.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
6508
svchost.exe
188.165.164.184:80
ip-addr.es
OVH SAS
FR
shared
6508
svchost.exe
188.165.164.184:443
ip-addr.es
OVH SAS
FR
shared
6508
svchost.exe
94.247.28.26:2525
—
CTS Computers and Telecommunications Systems SAS
FR
unknown
4
System
192.168.100.255:138
—
—
—
whitelisted
2336
svchost.exe
172.211.123.250:443
client.wns.windows.com
MICROSOFT-CORP-MSN-AS-BLOCK
FR
whitelisted
436
svchost.exe
20.190.160.67:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 20.73.194.208
  • 4.231.128.59
  • 51.104.136.2
whitelisted
google.com
  • 216.58.206.78
whitelisted
ip-addr.es
  • 188.165.164.184
shared
client.wns.windows.com
  • 172.211.123.250
whitelisted
login.live.com
  • 20.190.160.67
  • 20.190.160.3
  • 20.190.160.4
  • 20.190.160.22
  • 40.126.32.136
  • 40.126.32.74
  • 40.126.32.68
  • 20.190.160.66
whitelisted
ocsp.digicert.com
  • 2.17.190.73
whitelisted
crl.microsoft.com
  • 23.53.40.178
  • 23.53.40.176
whitelisted
www.microsoft.com
  • 23.35.229.160
whitelisted
nexusrules.officeapps.live.com
  • 52.111.243.30
whitelisted
slscr.update.microsoft.com
  • 20.109.210.53
whitelisted

Threats

PID
Process
Class
Message
6508
svchost.exe
Device Retrieving External IP Address Detected
ET INFO HTTP Request for External IP Check (ip-addr .es)
No debug info
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Reports
CryptoWall.exe