| File name: | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377 |
| Full analysis: | https://app.any.run/tasks/fbd2976b-a6ff-407f-8abb-2484ceb9c25e |
| 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 10, 2025, 21:35:37 |
| 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: | 5DEC892FCAF6F21AC6780C69F631F82C |
| SHA1: | 851AE1F87751CBED45A523FC340771F998E62DB1 |
| SHA256: | EFEF6CEA36D9DD6E74CDF5ADB9108AB1D0D3429DE4D66898595F6C954E95C377 |
| SSDEEP: | 49152:t0hzjZ8TgLiLTKjsjtWr2sODFRr9ZQRDgQS6ZjwlxdD/g2CdaZqW7BNKTDh:tq8BTzWrYJMR0QSOjwdzg7AZVeHh |
MALICIOUS
GULOADER has been detected
- efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
SUSPICIOUS
Executable content was dropped or overwritten
- powershell.exe (PID: 6012)
Starts POWERSHELL.EXE for commands execution
- efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
Detects reflection assembly loader (YARA)
- powershell.exe (PID: 6012)
Converts a specified value to a byte (POWERSHELL)
- powershell.exe (PID: 6012)
INFO
Reads security settings of Internet Explorer
- msiexec.exe (PID: 6884)
Creates files or folders in the user directory
- msiexec.exe (PID: 6884)
The sample compiled with english language support
- efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
- powershell.exe (PID: 6012)
Reads the computer name
- efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
Checks proxy server information
- msiexec.exe (PID: 6884)
Script raised an exception (POWERSHELL)
- powershell.exe (PID: 6012)
Checks whether the specified file exists (POWERSHELL)
- powershell.exe (PID: 6012)
Checks supported languages
- efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
Reads the software policy settings
- msiexec.exe (PID: 6884)
Gets data length (POWERSHELL)
- powershell.exe (PID: 6012)
Uses string split method (POWERSHELL)
- powershell.exe (PID: 6012)
The process uses the downloaded file
- powershell.exe (PID: 6012)
Converts byte array into ASCII string (POWERSHELL)
- powershell.exe (PID: 6012)
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
| MachineType: | Intel 386 or later, and compatibles |
|---|---|
| TimeStamp: | 2018:12:15 22:24:27+00:00 |
| ImageFileCharacteristics: | No relocs, Executable, No line numbers, No symbols, 32-bit |
| PEType: | PE32 |
| LinkerVersion: | 6 |
| CodeSize: | 25600 |
| InitializedDataSize: | 141824 |
| UninitializedDataSize: | 2048 |
| EntryPoint: | 0x3359 |
| OSVersion: | 4 |
| ImageVersion: | 6 |
| SubsystemVersion: | 4 |
| Subsystem: | Windows GUI |
| FileVersionNumber: | 3.1.0.0 |
| ProductVersionNumber: | 3.1.0.0 |
| FileFlagsMask: | 0x0000 |
| FileFlags: | (none) |
| FileOS: | Win32 |
| ObjectFileType: | Executable application |
| FileSubtype: | - |
| LanguageCode: | English (U.S.) |
| CharacterSet: | Windows, Latin1 |
| Comments: | dusren barcarole sulcalize |
| CompanyName: | alarmsystems |
| FileDescription: | udstykningsplan uidentificerbares vrdipapircentralerne |
| FileVersion: | 3.1.0.0 |
| LegalCopyright: | dulcigenic asterix |
| LegalTrademarks: | civilisationer markild goalless |
| ProductName: | bristly sublustrously frgende |
Total processes
128
Monitored processes
4
Malicious processes
1
Suspicious processes
1
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6600 | "C:\Users\admin\AppData\Local\Temp\efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe" | C:\Users\admin\AppData\Local\Temp\efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | explorer.exe | ||||||||||||
User: admin Company: alarmsystems Integrity Level: MEDIUM Description: udstykningsplan uidentificerbares vrdipapircentralerne Exit code: 4294967295 Version: 3.1.0.0 Modules
| |||||||||||||||
| 6012 | "powershell.exe" -windowstyle minimized "$Filicoid=Get-Content -Raw 'C:\Users\admin\AppData\Local\Temp\depersonaliseredes\Defaulting19.Met';$Karikeringerne78=$Filicoid.SubString(50063,3);.$Karikeringerne78($Filicoid)" | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | ||||||||||||
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows PowerShell Exit code: 0 Version: 10.0.19041.1 (WinBuild.160101.0800) Modules
| |||||||||||||||
| 5748 | \??\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
| |||||||||||||||
| 6884 | "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
| |||||||||||||||
Total events
8 605
Read events
8 599
Write events
6
Delete events
0
Modification events
| (PID) Process: | (6600) efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | Key: | HKEY_CURRENT_USER\skurestriber\Absee |
| Operation: | write | Name: | grandevous |
Value: %islandhood%\oveni\restaureredes.con | |||
| (PID) Process: | (6884) msiexec.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content |
| Operation: | write | Name: | CachePrefix |
Value: | |||
| (PID) Process: | (6884) msiexec.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies |
| Operation: | write | Name: | CachePrefix |
Value: Cookie: | |||
| (PID) Process: | (6884) msiexec.exe | Key: | HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History |
| Operation: | write | Name: | CachePrefix |
Value: Visited: | |||
Executable files
1
Suspicious files
14
Text files
5
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 6600 | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | C:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\Fleece.kar | binary | |
MD5:8A6A8A75FE9A08909B09C7242C1B0C73 | SHA256:1AAD58A3F50A3EF4E50AFCECBAF81D840F4E3F0C512BCC5844A1AEC594A06FF7 | |||
| 6600 | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | C:\Users\admin\AppData\Local\Temp\depersonaliseredes\Ceylonteer.kae | binary | |
MD5:03ADD5EC69F2D821F4BDDF502603364B | SHA256:A8850B76F116EB91305228F5F39B2B6152927531705DE707A60FC74B86DF4003 | |||
| 6012 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_3lr32jaq.2av.ps1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6012 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_imjdkgae.0gt.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
| 6884 | msiexec.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\DDE8B1B7E253A9758EC380BD648952AF_8C0D12F01B5D981AACF8BFC375CA0F2B | binary | |
MD5:273E853ECC801AD2A5B2B9B2B158076A | SHA256:B0EA2EE647CC760B34B5ED6B27C27C2D9DAA353859B1CC64B881EA0B5EB7E093 | |||
| 6884 | msiexec.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA | binary | |
MD5:92B839135741069B05829B07B6F3F3FB | SHA256:4AE12FEDBB424DA1938E2BF5B343DC175D9CDAAFD4123715BE68DDA9BB2F18C5 | |||
| 6600 | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | C:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\udsds.aut | binary | |
MD5:152C1126D35B77FC957526436ADBEA38 | SHA256:67780594962B62DD23C55340C9AB1CD11858C15F464E8EE312A690A1759EAFD3 | |||
| 6600 | efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe | C:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\montricens.fus | binary | |
MD5:0B038FD9C23C723696185E52EBCCB874 | SHA256:1E6B1012ABE05CD0B6409C6844E61C6314CF9EE5E04AF6E89352E09166C80B13 | |||
| 6884 | msiexec.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\05DDC6AA91765AACACDB0A5F96DF8199 | binary | |
MD5:E935BC5762068CAF3E24A2683B1B8A88 | SHA256:A8ACCFCFEB51BD73DF23B91F4D89FF1A9EB7438EF5B12E8AFDA1A6FF1769E89D | |||
| 6012 | powershell.exe | C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_ccrhx1oz.r3q.psm1 | text | |
MD5:D17FE0A3F47BE24A6453E9EF58C94641 | SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
11
TCP/UDP connections
35
DNS requests
23
Threats
0
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 |
6884 | msiexec.exe | GET | 200 | 142.250.185.195:80 | http://ocsp.pki.goog/gsr1/MFEwTzBNMEswSTAJBgUrDgMCGgUABBS3V7W2nAf4FiMTjpDJKg6%2BMgGqMQQUYHtmGkUNl8qJUC99BM00qP%2F8%2FUsCEHe9DWzbNvka6iEPxPBY0w0%3D | unknown | — | — | whitelisted |
6884 | msiexec.exe | GET | 200 | 142.250.185.195:80 | http://o.pki.goog/wr2/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEQDREXAZkIcRFgn9FoWvtnQ0 | unknown | — | — | whitelisted |
6884 | msiexec.exe | GET | 200 | 142.250.185.195:80 | http://o.pki.goog/wr2/MFIwUDBOMEwwSjAJBgUrDgMCGgUABBRTQtSEi8EX%2BbYUTXd8%2ByMxD3s1zQQU3hse7XkV1D43JMMhu%2Bw0OW1CsjACEQCtrC6LRgin8QlSmIIYAEvj | 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 |
6884 | msiexec.exe | GET | 200 | 142.250.185.195:80 | http://c.pki.goog/r/r1.crl | unknown | — | — | whitelisted |
6456 | backgroundTaskHost.exe | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D | unknown | — | — | whitelisted |
4712 | MoUsoCoreWorker.exe | GET | 200 | 23.48.23.143:80 | http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl | unknown | — | — | whitelisted |
6932 | 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 |
— | — | GET | 200 | 192.229.221.95:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%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 | 192.168.100.255:137 | — | — | — | whitelisted |
— | — | 40.127.240.158:443 | settings-win.data.microsoft.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
4712 | MoUsoCoreWorker.exe | 23.48.23.143:80 | crl.microsoft.com | Akamai International B.V. | DE | whitelisted |
4712 | MoUsoCoreWorker.exe | 184.30.21.171:80 | www.microsoft.com | AKAMAI-AS | DE | whitelisted |
4 | System | 192.168.100.255:138 | — | — | — | whitelisted |
5064 | SearchApp.exe | 104.126.37.161:443 | www.bing.com | Akamai International B.V. | DE | whitelisted |
— | — | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
1176 | svchost.exe | 40.126.31.73:443 | login.live.com | MICROSOFT-CORP-MSN-AS-BLOCK | IE | whitelisted |
1176 | svchost.exe | 192.229.221.95:80 | ocsp.digicert.com | EDGECAST | US | whitelisted |
1076 | svchost.exe | 23.35.238.131:443 | go.microsoft.com | AKAMAI-AS | DE | 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 |
ocsp.digicert.com |
| whitelisted |
login.live.com |
| whitelisted |
go.microsoft.com |
| whitelisted |
arc.msn.com |
| whitelisted |
fd.api.iris.microsoft.com |
| whitelisted |