File name:

572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc

Full analysis: https://app.any.run/tasks/c655afed-cd91-488c-901a-e5f48ea9c768
Verdict: Malicious activity
Threats:

First identified in March 2021, PureCrypter is a .NET-based loader that employs obfuscation techniques, such as SmartAssembly, to evade detection. It has been used to distribute malware families including AgentTesla, RedLine Stealer, and SnakeKeylogger. The malware is typically delivered through phishing campaigns and malicious downloads, often masquerading as legitimate files with extensions like .mp4 or .pdf. PureCrypter utilizes encryption and compression to conceal its payloads and can inject malicious code into legitimate processes to maintain persistence on the infected system.

Analysis date: January 10, 2025, 18:53:46
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
netreactor
purecrypter
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections
MD5:

1274394D6E0C05980955892DDC37C83E

SHA1:

D7964AA77C724938105610814DF4DCD6543CB061

SHA256:

572B88E8B07F9F8AD5EB109DAE93D2D87ABB6EAB0B92D7CD62850793C3F33CDC

SSDEEP:

98304:TdWafzWSuBJJHECw0FRoyLU7Ld0c34rbqfQf2kIiIzNTVDauWvcsClIg5Fr:TdSg

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

    • PURECRYPTER has been detected (YARA)

      • InstallUtil.exe (PID: 6716)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • 572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe (PID: 6540)
    • Connects to unusual port

      • InstallUtil.exe (PID: 6716)
  • INFO

    • Checks supported languages

      • 572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe (PID: 6540)
      • InstallUtil.exe (PID: 6716)
    • Manual execution by a user

      • InstallUtil.exe (PID: 6716)
    • Reads the computer name

      • 572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe (PID: 6540)
      • InstallUtil.exe (PID: 6716)
    • Reads the machine GUID from the registry

      • 572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe (PID: 6540)
      • InstallUtil.exe (PID: 6716)
    • .NET Reactor protector has been detected

      • InstallUtil.exe (PID: 6716)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2024:12:06 09:29:32+00:00
ImageFileCharacteristics: Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 6
CodeSize: 2128384
InitializedDataSize: 2048
UninitializedDataSize: -
EntryPoint: 0x209806
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
FileVersionNumber: 1.0.0.0
ProductVersionNumber: 1.0.0.0
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: -
CompanyName: -
FileDescription: Order Dec 6
FileVersion: 1.0.0.0
InternalName: Order Dec 6.exe
LegalCopyright: Copyright © 2014
LegalTrademarks: -
OriginalFileName: Order Dec 6.exe
ProductName: Order Dec 6
ProductVersion: 1.0.0.0
AssemblyVersion: 1.0.0.0
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
127
Monitored processes
2
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start 572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe #PURECRYPTER installutil.exe

Process information

PID
CMD
Path
Indicators
Parent process
6540"C:\Users\admin\AppData\Local\Temp\572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe" C:\Users\admin\AppData\Local\Temp\572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Order Dec 6
Exit code:
4294967295
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.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\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
6716"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
.NET Framework installation utility
Version:
4.8.9037.0 built by: NET481REL1
Modules
Images
c:\windows\microsoft.net\framework\v4.0.30319\installutil.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\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
Total events
413
Read events
413
Write events
0
Delete events
0

Modification events

No data
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
6540572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exeC:\Users\admin\AppData\Roaming\IsValueCreated.exeexecutable
MD5:1274394D6E0C05980955892DDC37C83E
SHA256:572B88E8B07F9F8AD5EB109DAE93D2D87ABB6EAB0B92D7CD62850793C3F33CDC
6540572b88e8b07f9f8ad5eb109dae93d2d87abb6eab0b92d7cd62850793c3f33cdc.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IsValueCreated.vbstext
MD5:7B07F6797501BF1B52E5E719FD3CA7E0
SHA256:42B7504BD1FF32B5B1883B6C48E2AC74C49A0F3BF4A8870D1277B56CAF50BB18
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
9
TCP/UDP connections
37
DNS requests
17
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4712
MoUsoCoreWorker.exe
GET
200
23.48.23.167:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
whitelisted
6092
svchost.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
whitelisted
6092
svchost.exe
GET
200
23.48.23.167:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
whitelisted
1176
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
whitelisted
4712
MoUsoCoreWorker.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
whitelisted
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
whitelisted
6408
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
whitelisted
6408
SIHClient.exe
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
whitelisted
6608
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%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
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
whitelisted
4712
MoUsoCoreWorker.exe
23.48.23.167:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
6092
svchost.exe
23.48.23.167:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
4712
MoUsoCoreWorker.exe
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
6092
svchost.exe
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
5064
SearchApp.exe
104.126.37.131:443
www.bing.com
Akamai International B.V.
DE
whitelisted
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
4
System
192.168.100.255:138
whitelisted
1176
svchost.exe
20.190.160.14:443
login.live.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 4.231.128.59
whitelisted
crl.microsoft.com
  • 23.48.23.167
  • 23.48.23.139
  • 23.48.23.159
  • 23.48.23.137
  • 23.48.23.180
  • 23.48.23.143
  • 23.48.23.141
  • 23.48.23.150
  • 23.48.23.173
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
google.com
  • 142.250.186.110
whitelisted
www.bing.com
  • 104.126.37.131
  • 104.126.37.139
  • 104.126.37.145
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
login.live.com
  • 20.190.160.14
  • 40.126.32.74
  • 40.126.32.134
  • 40.126.32.138
  • 20.190.160.22
  • 40.126.32.68
  • 40.126.32.76
  • 40.126.32.136
whitelisted
go.microsoft.com
  • 2.23.242.9
whitelisted
arc.msn.com
  • 20.223.36.55
whitelisted
fd.api.iris.microsoft.com
  • 20.103.156.88
whitelisted

Threats

No threats detected
No debug info