| File name: | ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe |
| Full analysis: | https://app.any.run/tasks/085ddeb8-cd56-4dec-b6cc-00f38e3b80c2 |
| 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: | December 14, 2024, 03:49:17 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections |
| MD5: | 59EAB4D3E8B7C383D6E963256CE603D8 |
| SHA1: | 367AC5A131BBEBCE102B0FC56C3F22224FE61B47 |
| SHA256: | EA8724FF42A52834A9AF9C7D3FE10AC6FF1FE8064E4F1E3E519DAF9396A508F0 |
| SSDEEP: | 24576:Brg6zKYLUVKzv6q8cCqPvcTEOcsZeapgU9HRD78gsyDuoH:u6zKYgVKD6q83qPvcTEOfZeapgU9HRDX |
MALICIOUS
Bypass execution policy to execute commands
- powershell.exe (PID: 6300)
- powershell.exe (PID: 7108)
Run PowerShell with an invisible window
- powershell.exe (PID: 6300)
- powershell.exe (PID: 7108)
PURECRYPTER has been detected (SURICATA)
- InstallUtil.exe (PID: 6552)
Starts CMD.EXE for self-deleting
- InstallUtil.exe (PID: 6552)
SUSPICIOUS
Reads security settings of Internet Explorer
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- InstallUtil.exe (PID: 6552)
Starts CMD.EXE for commands execution
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- InstallUtil.exe (PID: 6552)
The executable file from the user directory is run by the CMD process
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
The process executes via Task Scheduler
- powershell.exe (PID: 6300)
- Product.exe (PID: 5244)
- powershell.exe (PID: 7108)
Executable content was dropped or overwritten
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
Connects to unusual port
- InstallUtil.exe (PID: 6552)
Contacting a server suspected of hosting an CnC
- InstallUtil.exe (PID: 6552)
Uses TASKKILL.EXE to kill process
- cmd.exe (PID: 7164)
Uses TIMEOUT.EXE to delay execution
- cmd.exe (PID: 7164)
INFO
Reads the machine GUID from the registry
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
- Product.exe (PID: 5244)
- InstallUtil.exe (PID: 6552)
Checks supported languages
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
- InstallUtil.exe (PID: 6552)
- Product.exe (PID: 5244)
Reads the computer name
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
- Product.exe (PID: 5244)
- InstallUtil.exe (PID: 6552)
The process uses the downloaded file
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- InstallUtil.exe (PID: 6552)
Process checks computer location settings
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6416)
- InstallUtil.exe (PID: 6552)
Script raised an exception (POWERSHELL)
- powershell.exe (PID: 6300)
- powershell.exe (PID: 7108)
Checks if a key exists in the options dictionary (POWERSHELL)
- powershell.exe (PID: 6300)
- powershell.exe (PID: 7108)
Creates files or folders in the user directory
- ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe (PID: 6216)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2089:01:01 08:23:14+00:00 |
| ImageFileCharacteristics: | Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 48 |
| CodeSize: | 602112 |
| InitializedDataSize: | 2048 |
| UninitializedDataSize: | - |
| EntryPoint: | 0x94fae |
| 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: | - |
| FileVersion: | 1.0.0.0 |
| InternalName: | Woouhtlutd.exe |
| LegalCopyright: | - |
| LegalTrademarks: | - |
| OriginalFileName: | Woouhtlutd.exe |
| ProductName: | - |
| ProductVersion: | 1.0.0.0 |
| AssemblyVersion: | 1.0.0.0 |
Total processes
143
Monitored processes
15
Malicious processes
2
Suspicious processes
2
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3140 | timeout 3 | C:\Windows\SysWOW64\timeout.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: timeout - pauses command processing Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5244 | "C:\Users\admin\AppData\Local\MethodSignature\odeyva\Product.exe" | C:\Users\admin\AppData\Local\MethodSignature\odeyva\Product.exe | — | svchost.exe | |||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 6204 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6216 | "C:\Users\admin\AppData\Local\Temp\ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe" | C:\Users\admin\AppData\Local\Temp\ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe | cmd.exe | ||||||||||||
User: admin Integrity Level: HIGH Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 6224 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | powershell.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6300 | "powershell.exe" -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAGEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwALABDADoAXABVAHMAZQByAHMAXABhAGQAbQBpAG4AXABBAHAAcABEAGEAdABhAFwATABvAGMAYQBsAFwAVABlAG0AcABcADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAUAByAG8AZAB1AGMAdAAuAGUAeABlADsA | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | — | svchost.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Windows PowerShell Exit code: 1 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 6416 | "C:\Users\admin\AppData\Local\Temp\ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe" | C:\Users\admin\AppData\Local\Temp\ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe | — | explorer.exe | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 6552 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe | Product.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: .NET Framework installation utility Exit code: 1 Version: 4.8.9037.0 built by: NET481REL1 Modules
| |||||||||||||||
| 6812 | taskkill /F /PID 6552 | C:\Windows\SysWOW64\taskkill.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: Terminates Processes Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7076 | timeout 3 | C:\Windows\SysWOW64\timeout.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: HIGH Description: timeout - pauses command processing Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
12 856
Read events
12 856
Write events
0
Delete events
0
Modification events
Executable files
1
Suspicious files
1
Text files
4
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 7108 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_vayz5hgj.2ac.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6300 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_ygvlx0kr.eiq.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6216 | ea8724ff42a52834a9af9c7d3fe10ac6ff1fe8064e4f1e3e519daf9396a508f0.exe | C:\Users\admin\AppData\Local\MethodSignature\odeyva\Product.exe | executable | |
MD5:59EAB4D3E8B7C383D6E963256CE603D8 | SHA256:EA8724FF42A52834A9AF9C7D3FE10AC6FF1FE8064E4F1E3E519DAF9396A508F0 | |||
| 7108 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_rtbc3hnu.0cw.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6300 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_dhthadby.wxp.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6300 | powershell.exe | C:\Users\admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive | binary | |
MD5:70E2FFCE4E8583D9501E48B06BA54082 | SHA256:4281DC3CF61616AD3EFC2A1D26381ECEE9E7E252142608B26357E0DC30935791 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
8
TCP/UDP connections
34
DNS requests
20
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
— | — | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
— | — | GET | 200 | 23.53.40.176:80 | 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 |
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
372 | 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 |
6488 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D | unknown | — | — | whitelisted |
372 | 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 |
6488 | 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 |
|---|---|---|---|---|---|---|
— | — | 192.168.100.255:137 | — | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
876 | svchost.exe | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
— | — | 4.231.128.59:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
5064 | SearchApp.exe | 104.126.37.123:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
— | — | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
— | — | 23.53.40.176:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
— | — | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
1176 | svchost.exe | 40.126.32.74:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
www.bing.com |
| whitelisted |
google.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
login.live.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2192 | svchost.exe | Misc activity | ET INFO Observed DNS Query to .dad TLD |
6552 | InstallUtil.exe | Malware Command and Control Activity Detected | LOADER [ANY.RUN] PureLoader Download Attempt (LOAD) |