MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838. 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

Grandoreiro

Vendor detections: 11

Intelligence 11 IOCs YARA 2 File information Comments

SHA256 hash:	c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838
SHA3-384 hash:	68ac5f0d2ecf9ae3466ab8b8835050bccdd442d8c278013f507b412806fddb7e3c14db3b88f0855993a17e82df988f11
SHA1 hash:	a0e6e983f1a0eb48fec76213467be630b78c1aef
MD5 hash:	4a4e90d2347d1f3679d31ce220b96476
humanhash:	ack-nineteen-orange-helium
File name:	Fisc3351-Recep_CargebknDigi_Firm5657386TLQB_C8JJM.vbs
Download:	download sample
Signature	Grandoreiro Create hunting rule
File size:	9'106'344 bytes
First seen:	2026-10-24 07:31:38 UTC
Last seen:	Never
File type:	vbs
MIME type:	text/plain
ssdeep	49152:p4zdzHMqwZDZlaczHm1mMZ0u9YUGgd8QVqWtTsi9JwUqRhzrwwfpfpAuMgV8OhNr:pH
TLSH	T10F962332BE94151B05B0473AF05B6673BF768863824C92F68CCDF255368B9D9817F8E8
Magika	txt
Reporter	abuse_ch
Tags:	geo Grandoreiro MEX vbs

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/94322/

Detection(s):

SecuriteInfo.com.GT.VB.ObfDldr.32.8404E883.76582513.UNOFFICIAL

Verdict:

Suspicious

Score:

50%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6adc5bbcafb06e650cd8e5a4

Tags:

spawn blic

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-debug base64 crypto evasive fingerprint keylogger obfuscated obfuscated packed reconnaissance

Link:

https://www.filescan.io/uploads/6adc5f0661a89fb57e44902a/reports/aa94b6fc-db7a-41af-9c6d-11cc9310e22b/overview

Verdict:

Malicious

Labled as:

GT:VB.ObfDldr.32

Link:

https://www.hybrid-analysis.com/sample/c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838

Verdict:

Malicious

File Type:

vbs

First seen:

2026-10-24T05:29:00Z UTC

Last seen:

2026-10-24T06:06:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838/results?tab=lookup

Result

Threat name:

n/a

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1991300

Signature

Benign windows process drops PE files

Connects to many ports of the same IP (likely port scanning)

Drops PE files to the user root directory

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sigma detected: Execution from Suspicious Folder

Sigma detected: Suspicious Program Location with Network Connections

Sigma detected: Windows Shell/Scripting Application File Write to Suspicious Folder

Sigma detected: WScript or CScript Dropper

Tries to detect sandboxes / dynamic malware analysis system (registry check)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses known network protocols on non-standard ports

Windows Scripting host queries suspicious COM object (likely to drop second stage)

WScript reads language and country specific registry keys (likely country aware script)

Behaviour

Behavior Graph:

Download SVG

Score:

50%

Verdict:

Susipicious

File Type:

SCRIPT

Link:

https://malprob.io/report/c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838

Verdict:

Malware

YARA:

2 match(es)

Tags:

ADODB.Stream COM Behavior Trace DeObfuscated Microsoft.XMLDOM Obfuscated Scripting.FileSystemObject Shell.Application SOS: 0.74 T1027 T1059 T1059.005 VBScript WScript.Shell

Link:

https://app.malva.re/file/4a4e90d2347d1f3679d31ce220b96476

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838/

Threat name:

Text.Downloader.Obfdldr

Status:

Malicious

First seen:

2026-10-24 07:18:20 UTC

File Type:

Text

AV detection:

5 of 38 (13.16%)

Threat level:

3/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zeopen7arradzddkolgfvlvitaytjfs73bk64cvxgg5dcj7wxa4a._file

Verdict:

malicious

Label(s):

Grandoreiro

Link:

https://reports.threatray.com/28997522-ce5a-47c7-b688-bdc9fd5b0ef1

Result

Malware family:

n/a

Score:

9/10

Tags:

defense_evasion discovery execution persistence ransomware

Link:

https://tria.ge/reports/261024-jc3jaagw3x/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Uses Volume Shadow Copy WMI provider

Uses Volume Shadow Copy service COM API

Enumerates physical storage devices

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.

Checks computer location settings

Executes dropped EXE

Looks for VMWare Tools registry key

Enumerates VirtualBox registry keys

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Looks for VirtualBox Guest Additions in registry

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c91cf237e08c/report/overview.html

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/c91cf237e08c403c8c6a72cc5aaea8983134965fd855ee0ab731ba3127f6b838

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:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries