File name:

29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7

Full analysis: https://app.any.run/tasks/a1592f31-1d2d-4916-9b41-2bb5765a21d7
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, 23:28:23
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
purecrypter
purelogs
stealer
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections
MD5:

8C44C88488296FC18AE7C99764DDE430

SHA1:

41B27E11F1A3C98EA76F86249935D205F1665577

SHA256:

29AF573D5E1B642841691E783DB2DA86911450D5A24D6C6814A24C84C05202A7

SSDEEP:

49152:nY3c1YcRpx2Xpr3fIxfkTDLVs69b4YCrUIusjxXsl98Mn6Rz1GWeiWDzpSFEMXvm:6c1YczxsrvYmLPb4jrjxXS98Mnuz1xxy

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

    • Create files in the Startup directory

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
    • PURECRYPTER has been detected (SURICATA)

      • InstallUtil.exe (PID: 3560)
    • Scans artifacts that could help determine the target

      • InstallUtil.exe (PID: 3560)
    • Connects to the CnC server

      • InstallUtil.exe (PID: 3560)
    • Steals credentials from Web Browsers

      • InstallUtil.exe (PID: 3560)
    • Actions looks like stealing of personal data

      • InstallUtil.exe (PID: 3560)
  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
    • Contacting a server suspected of hosting an CnC

      • InstallUtil.exe (PID: 3560)
    • Connects to unusual port

      • InstallUtil.exe (PID: 3560)
  • INFO

    • Creates files or folders in the user directory

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
    • Checks supported languages

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
      • InstallUtil.exe (PID: 3560)
    • Reads the machine GUID from the registry

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
      • InstallUtil.exe (PID: 3560)
    • Reads the computer name

      • 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe (PID: 5092)
      • InstallUtil.exe (PID: 3560)
    • Manual execution by a user

      • InstallUtil.exe (PID: 3560)
    • Reads Microsoft Office registry keys

      • InstallUtil.exe (PID: 3560)
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.) (82.9)
.dll | Win32 Dynamic Link Library (generic) (7.4)
.exe | Win32 Executable (generic) (5.1)
.exe | Generic Win/DOS Executable (2.2)
.exe | DOS Executable Generic (2.2)

EXIF

EXE

AssemblyVersion: 1.0.0.0
ProductVersion: 1.0.0.0
ProductName: Jmxinbigz
OriginalFileName: Jmxinbigz.exe
LegalTrademarks: -
LegalCopyright: Copyright © 2016
InternalName: Jmxinbigz.exe
FileVersion: 1.0.0.0
FileDescription: Jmxinbigz
CompanyName: -
Comments: -
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.0.0.0
FileVersionNumber: 1.0.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x14dace
UninitializedDataSize: -
InitializedDataSize: 2048
CodeSize: 1358848
LinkerVersion: 8
PEType: PE32
ImageFileCharacteristics: Executable, 32-bit
TimeStamp: 2024:12:19 04:56:27+00:00
MachineType: Intel 386 or later, and compatibles
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
128
Monitored processes
2
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
start 29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe #PURECRYPTER installutil.exe

Process information

PID
CMD
Path
Indicators
Parent process
5092"C:\Users\admin\AppData\Local\Temp\29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe" C:\Users\admin\AppData\Local\Temp\29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Jmxinbigz
Exit code:
4294967295
Version:
1.0.0.0
Modules
Images
c:\users\admin\appdata\local\temp\29af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.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
3560"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
Exit code:
0
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
1 919
Read events
1 919
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
509229af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bag.vbstext
MD5:EA438E76B63877B4FBF673903178E769
SHA256:87F2917AF2693D31EF1D2F04BBFC3ABBF3580D40D18B793CD6FA436D4D3FC182
509229af573d5e1b642841691e783db2da86911450d5a24d6c6814a24c84c05202a7.exeC:\Users\admin\AppData\Roaming\bag.exeexecutable
MD5:8C44C88488296FC18AE7C99764DDE430
SHA256:29AF573D5E1B642841691E783DB2DA86911450D5A24D6C6814A24C84C05202A7
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
7
TCP/UDP connections
34
DNS requests
18
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
GET
200
184.30.21.171:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
whitelisted
GET
200
23.48.23.143:80
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
4944
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl
unknown
whitelisted
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D
unknown
whitelisted
4944
SIHClient.exe
GET
200
95.101.149.131:80
http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl
unknown
whitelisted
5920
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
System
192.168.100.255:138
whitelisted
4712
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
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
23.48.23.143:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
184.30.21.171:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
3220
svchost.exe
20.73.194.208:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
5064
SearchApp.exe
104.126.37.186:443
www.bing.com
Akamai International B.V.
DE
whitelisted
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
3560
InstallUtil.exe
38.255.43.136:2828
COGENT-174
US
unknown

DNS requests

Domain
IP
Reputation
google.com
  • 172.217.16.206
whitelisted
crl.microsoft.com
  • 23.48.23.143
  • 23.48.23.156
whitelisted
www.microsoft.com
  • 184.30.21.171
  • 95.101.149.131
whitelisted
www.bing.com
  • 104.126.37.186
  • 104.126.37.171
  • 104.126.37.155
  • 104.126.37.137
  • 104.126.37.130
  • 104.126.37.184
  • 104.126.37.185
  • 104.126.37.139
  • 104.126.37.123
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
settings-win.data.microsoft.com
  • 4.231.128.59
  • 20.73.194.208
  • 51.124.78.146
whitelisted
login.live.com
  • 20.190.159.75
  • 20.190.159.71
  • 20.190.159.64
  • 20.190.159.4
  • 40.126.31.73
  • 20.190.159.68
  • 40.126.31.71
  • 20.190.159.73
whitelisted
go.microsoft.com
  • 23.35.238.131
whitelisted
slscr.update.microsoft.com
  • 52.149.20.212
whitelisted
fe3cr.delivery.mp.microsoft.com
  • 20.3.187.198
whitelisted

Threats

PID
Process
Class
Message
A Network Trojan was detected
LOADER [ANY.RUN] PureLogs Download Attempt (LOAD)
1 ETPRO signatures available at the full report
No debug info