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:
guloader
loader
reflection
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

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

    • GULOADER has been detected

      • efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
  • SUSPICIOUS

    • Detects reflection assembly loader (YARA)

      • powershell.exe (PID: 6012)
    • Executable content was dropped or overwritten

      • powershell.exe (PID: 6012)
    • Starts POWERSHELL.EXE for commands execution

      • efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
    • Converts a specified value to a byte (POWERSHELL)

      • powershell.exe (PID: 6012)
  • INFO

    • The sample compiled with english language support

      • efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
      • powershell.exe (PID: 6012)
    • Checks supported languages

      • efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
    • Reads the computer name

      • efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe (PID: 6600)
    • Reads security settings of Internet Explorer

      • msiexec.exe (PID: 6884)
    • Checks whether the specified file exists (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)
    • Gets data length (POWERSHELL)

      • powershell.exe (PID: 6012)
    • Script raised an exception (POWERSHELL)

      • powershell.exe (PID: 6012)
    • Uses string split method (POWERSHELL)

      • powershell.exe (PID: 6012)
    • Checks proxy server information

      • msiexec.exe (PID: 6884)
    • Creates files or folders in the user directory

      • msiexec.exe (PID: 6884)
    • Reads the software policy settings

      • msiexec.exe (PID: 6884)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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

ProductName: bristly sublustrously frgende
LegalTrademarks: civilisationer markild goalless
LegalCopyright: dulcigenic asterix
FileVersion: 3.1.0.0
FileDescription: udstykningsplan uidentificerbares vrdipapircentralerne
CompanyName: alarmsystems
Comments: dusren barcarole sulcalize
CharacterSet: Windows, Latin1
LanguageCode: English (U.S.)
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x0000
ProductVersionNumber: 3.1.0.0
FileVersionNumber: 3.1.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: 6
OSVersion: 4
EntryPoint: 0x3359
UninitializedDataSize: 2048
InitializedDataSize: 141824
CodeSize: 25600
LinkerVersion: 6
PEType: PE32
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
TimeStamp: 2018:12:15 22:24:27+00:00
MachineType: Intel 386 or later, and compatibles
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
128
Monitored processes
4
Malicious processes
1
Suspicious processes
1

Behavior graph

Click at the process to see the details
start #GULOADER efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exe no specs powershell.exe conhost.exe no specs msiexec.exe

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
Images
c:\users\admin\appdata\local\temp\efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.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\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\user32.dll
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
Images
c:\windows\syswow64\windowspowershell\v1.0\powershell.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\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
5748\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exepowershell.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
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
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
Images
c:\windows\syswow64\mshtml.dll
c:\windows\syswow64\msiexec.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\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
Total events
8 605
Read events
8 599
Write events
6
Delete events
0

Modification events

(PID) Process:(6600) efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeKey:HKEY_CURRENT_USER\skurestriber\Absee
Operation:writeName:grandevous
Value:
%islandhood%\oveni\restaureredes.con
(PID) Process:(6884) msiexec.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(6884) msiexec.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(6884) msiexec.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
Executable files
1
Suspicious files
14
Text files
5
Unknown types
0

Dropped files

PID
Process
Filename
Type
6600efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeC:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\montricens.fusbinary
MD5:0B038FD9C23C723696185E52EBCCB874
SHA256:1E6B1012ABE05CD0B6409C6844E61C6314CF9EE5E04AF6E89352E09166C80B13
6012powershell.exeC:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeexecutable
MD5:5DEC892FCAF6F21AC6780C69F631F82C
SHA256:EFEF6CEA36D9DD6E74CDF5ADB9108AB1D0D3429DE4D66898595F6C954E95C377
6884msiexec.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAbinary
MD5:92B839135741069B05829B07B6F3F3FB
SHA256:4AE12FEDBB424DA1938E2BF5B343DC175D9CDAAFD4123715BE68DDA9BB2F18C5
6884msiexec.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\DDE8B1B7E253A9758EC380BD648952AF_8C0D12F01B5D981AACF8BFC375CA0F2Bbinary
MD5:273E853ECC801AD2A5B2B9B2B158076A
SHA256:B0EA2EE647CC760B34B5ED6B27C27C2D9DAA353859B1CC64B881EA0B5EB7E093
6600efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeC:\Users\admin\AppData\Local\Temp\depersonaliseredes\Begravelsesopsparing15.Rnnbinary
MD5:1639E2A4EBDF458FF751E71BAB70B2E9
SHA256:690927A3F3DE1E055D99DC28F3A178C8A0FC256C9BED04E7D0EAC456EA647B90
6600efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeC:\Users\admin\AppData\Local\Temp\depersonaliseredes\prioritetsrkkeflgerne\Fleece.karbinary
MD5:8A6A8A75FE9A08909B09C7242C1B0C73
SHA256:1AAD58A3F50A3EF4E50AFCECBAF81D840F4E3F0C512BCC5844A1AEC594A06FF7
6600efef6cea36d9dd6e74cdf5adb9108ab1d0d3429de4d66898595f6c954e95c377.exeC:\Users\admin\AppData\Local\Temp\depersonaliseredes\Ceylonteer.kaebinary
MD5:03ADD5EC69F2D821F4BDDF502603364B
SHA256:A8850B76F116EB91305228F5F39B2B6152927531705DE707A60FC74B86DF4003
6012powershell.exeC:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_3lr32jaq.2av.ps1text
MD5:D17FE0A3F47BE24A6453E9EF58C94641
SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7
6012powershell.exeC:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_ccrhx1oz.r3q.psm1text
MD5:D17FE0A3F47BE24A6453E9EF58C94641
SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7
6012powershell.exeC:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_cninlkrd.2qu.ps1text
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
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
6456
backgroundTaskHost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D
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
23.48.23.143:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
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
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
1176
svchost.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
whitelisted
6932
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
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
  • 40.127.240.158
whitelisted
crl.microsoft.com
  • 23.48.23.143
  • 23.48.23.147
  • 23.48.23.156
  • 23.48.23.139
  • 23.48.23.193
  • 23.48.23.194
  • 23.48.23.145
  • 23.48.23.141
  • 23.48.23.150
whitelisted
www.microsoft.com
  • 184.30.21.171
whitelisted
google.com
  • 142.250.186.110
whitelisted
www.bing.com
  • 104.126.37.161
  • 104.126.37.144
  • 104.126.37.176
  • 104.126.37.170
  • 104.126.37.179
  • 104.126.37.171
  • 104.126.37.177
  • 104.126.37.155
  • 104.126.37.162
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
login.live.com
  • 40.126.31.73
  • 20.190.159.71
  • 20.190.159.23
  • 40.126.31.67
  • 20.190.159.68
  • 20.190.159.73
  • 20.190.159.75
  • 40.126.31.71
whitelisted
go.microsoft.com
  • 23.35.238.131
whitelisted
arc.msn.com
  • 20.74.47.205
whitelisted
fd.api.iris.microsoft.com
  • 20.74.19.45
whitelisted

Threats

No threats detected
No debug info