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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400
SHA3-384 hash: 01374680483659a87944654e00aa87371165b6e63abae32345cbe4ec42d3551ba87e22cf6c580fed22ccf70700731f7f
SHA1 hash: 0210e7f225334e336375c7dd5d398b8319541fc8
MD5 hash: 0b4a5885cef0d2734853c6c81987254e
humanhash: zebra-apart-asparagus-delaware
File name:Surveyor docs_compressed.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:25'143 bytes
First seen:2026-09-30 01:58:09 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 768:RihPBUoGmvmVOWppTrLuZynvASLsB0/PksOy:MzE3OOLPvAHBImy
TLSH T104B24D62DE4126259D071B96984D6874EF65006601630272FEFD722E2907F6CB7BCD1F
Magika vba
Reporter threatcat_ch
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/89783/
Detection(s):
SecuriteInfo.com.Script.SNH-gen.83141152.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cloudeye cmd dropper lolbin
Link:
https://www.filescan.io/uploads/6abc6cb6857ed236f5c8d964/reports/70e512a1-c0e8-4d21-8392-36812c83699c/overview
Verdict:
Malicious
Labled as:
PowerShell/Kryptik.OT trojan
Link:
https://www.hybrid-analysis.com/sample/df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400
Verdict:
Malicious
File Type:
vbs
First seen:
2026-09-29T22:38:00Z UTC
Last seen:
2026-09-30T22:08:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400/results?tab=lookup
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1979741
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell connects to network
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Switches to a custom stack to bypass stack traces
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:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400
Verdict:
Malware
YARA:
1 match(es)
Tags:
COM Behavior Trace DeObfuscated Obfuscated Scripting.FileSystemObject SOS: 0.24 T1027 T1059.005 VBScript WScript.Shell
Link:
https://app.malva.re/file/0b4a5885cef0d2734853c6c81987254e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400/
Threat name:
Script-WScript.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2026-09-30 01:59:18 UTC
File Type:
Text (VBS)
AV detection:
7 of 23 (30.43%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=35yd7nzrdagpycimtboqnjovwdxhms42s4ga5v5cebnngsxuqqaa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery execution
Link:
https://tria.ge/reports/260930-cdxk4aycnf/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Executes a command shell one-liner
Reads the TCP/IP host and domain name from the registry
System Location Discovery: System Language Discovery
Executes a VBScript file via the Windows Script Host.
Enumerates connected drives
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.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:detect_tiny_vbs
Create hunting rule
Author:daniyyell
Description:Detects tiny VBS delivery technique
Rule name:Guloader_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

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 df703fb731180cfc090c985d06a5d5b0ee764b9a970c0ed7a2205ad34af48400

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/89783/

Comments