MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56e7837e2855d749d9848d20ffb2e682f2288b7f10156597abd2fdee543e79c6. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



GuLoader


Vendor detections: 11


Intelligence 11 IOCs YARA File information Comments

SHA256 hash: 56e7837e2855d749d9848d20ffb2e682f2288b7f10156597abd2fdee543e79c6
SHA3-384 hash: 3f9cf927a6ebb20005703cb01e415dd001014b8f36939a8930bc5e80c678b821e5a8a00e031b1ed6a4bf0af0eff4d24e
SHA1 hash: b02c41d732c05efc3c1b48b59bc0c23c3e586908
MD5 hash: 5ad46a612d77078adb84e4c3b59113b8
humanhash: pip-tango-tango-salami
File name:RFQ.vbs
Download: download sample
Signature GuLoader
File size:25'651 bytes
First seen:2026-07-14 03:29:03 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:fW6bdxnzBW/LwLaYxCqer6s5/cSCkibE0+6yqvWmhxMjF0MiNi+08J:j5wH5r3/cSab1dyqvWIOjG
TLSH T152B229A27F9409578D8F21A7993C4F6AC9149995C8713CA8BCBDFB0DE844B1C36AC41E
Magika vba
Reporter threatcat_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
85
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
94.9%
Tags:
vmdetect xtreme shell sage
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
downloader evasive
Verdict:
Malicious
File Type:
vbs
First seen:
2026-07-13T23:53:00Z UTC
Last seen:
2026-07-14T00:22:00Z UTC
Hits:
~100
Result
Threat name:
GuLoader
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Potential malicious VBS script found (suspicious strings)
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Unusual module load detection (module proxying)
VBScript performs obfuscated calls to suspicious functions
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1941924 Sample: RFQ.vbs Startdate: 14/07/2026 Architecture: WINDOWS Score: 100 34 drive.usercontent.google.com 2->34 36 drive.google.com 2->36 38 bg.microsoft.map.fastly.net 2->38 46 Malicious sample detected (through community Yara rule) 2->46 48 Yara detected GuLoader 2->48 50 Suspicious powershell command line found 2->50 52 4 other signatures 2->52 8 wscript.exe 1 2->8         started        11 powershell.exe 13 2->11         started        13 svchost.exe 1 1 2->13         started        signatures3 process4 dnsIp5 54 VBScript performs obfuscated calls to suspicious functions 8->54 56 Suspicious powershell command line found 8->56 58 Wscript starts Powershell (via cmd or directly) 8->58 66 3 other signatures 8->66 16 powershell.exe 17 8->16         started        60 Writes to foreign memory regions 11->60 62 Found suspicious powershell code related to unpacking or dynamic code loading 11->62 64 Switches to a custom stack to bypass stack traces 11->64 20 backgroundTaskHost.exe 11->20         started        22 backgroundTaskHost.exe 6 11->22         started        24 conhost.exe 11->24         started        40 127.0.0.1 unknown unknown 13->40 signatures6 process7 dnsIp8 30 drive.usercontent.google.com 142.251.218.97, 443, 49690, 49704 GOOGLE-GoogleLLCUS United States 16->30 32 drive.google.com 142.251.219.174, 443, 49686, 49703 GOOGLE-GoogleLLCUS United States 16->32 42 Found suspicious powershell code related to unpacking or dynamic code loading 16->42 26 conhost.exe 16->26         started        44 Unusual module load detection (module proxying) 20->44 28 backgroundTaskHost.exe 22->28         started        signatures9 process10
Verdict:
Malware
YARA:
1 match(es)
Tags:
Scripting.FileSystemObject Shell.Application T1059.005 VBScript
Threat name:
Script-WScript.Trojan.Sonbokli
Status:
Malicious
First seen:
2026-07-14 03:29:32 UTC
File Type:
Text (VBS)
AV detection:
3 of 36 (8.33%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Checks computer location settings
Badlisted process makes network request
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

GuLoader

Visual Basic Script (vbs) vbs 56e7837e2855d749d9848d20ffb2e682f2288b7f10156597abd2fdee543e79c6

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments