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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec. 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


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec
SHA3-384 hash: f8765ee49f6cc238597505429990a61ba2ecc8fd89d7d220946223d46288dd388fb2fd2efdb0db27d1bcb839cd2a23c6
SHA1 hash: f9694472dd221a9b9ecf5c511be76f4e08a9302f
MD5 hash: fdc1e3f4329b248dc89b700eb4066cc8
humanhash: xray-minnesota-utah-sink
File name:stage1_ef1c40e8bca8.zsh
Download: download sample
File size:2'896 bytes
First seen:2026-11-06 16:28:22 UTC
Last seen:Never
File type:zsh zsh
MIME type:text/x-shellscript
ssdeep 48:WOFBVQ/hx27Xk7Ayq7FWDK+rfsRewk1pNi+BJctOG+UQgUeN4kBTmWOhCtdZRxOI:Fy/720XqhWDK+rfsUX1pNvJctOG+UXBR
TLSH T17551E9B8E40C50B6E0D75B5B9849F83C56DD33D98EF8B14CB94AEA0C14BEAA0D45E80D
TrID 70.0% (.SH) Linux/UNIX shell script (7000/1)
30.0% (.) Unix-like shebang (var.3) (gen) (3000/1)
Magika shell
Reporter c4ffeine
Tags:ClickFix dropper Foxveil macOS zsh


Avatar
c4ffeine
Foxveil stage-1 zsh dropper (2,896 B), fetched via Tor 2026-11-06 16:23 UTC from a domain registered 2026-09-25. Decoded statically (const-key AES-CTR chain): its stage-2 fetches the Foxveil Mach-O 744eaf75996c74c2c434bbde75288ab57ae8858129d4c0b314f5dfe596682990 from the same host. Not executed.

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
US US
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6af1b9fd1492c978625a3d15macos16vpnfull_triage
Tags:
virus agent sage
Gathering data
Verdict:
Malicious
Labled as:
TrojanDownloader/OSX.Maloader
Link:
https://www.hybrid-analysis.com/sample/ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec
Verdict:
Malicious
File Type:
unix shell
Link:
https://opentip.kaspersky.com/ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec/results?tab=lookup
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec/
Threat name:
MacOS.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2026-11-06 16:29:15 UTC
File Type:
Text (Shell)
AV detection:
12 of 23 (52.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54oeb2f4val2hbeqmkygj5v3ms224fdiggwgi5y6rx2wceo74lwa._file
Malware Family:
infostl
Create hunting rule
Malicious:
True
Tags:
shell self-delete
Link:
https://intel.virussign.com/intelligence/file/ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec

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:Foxveil_Stage1_Zsh_ConstKey_AesCtr
Create hunting rule
Description:Foxveil ClickFix stage-1 zsh dropper: hex blobs -> md5(constant _kb) -> openssl AES-128-CTR IV 0 -> gunzip -> zsh, behind a decoy maintenance script
Rule name:Foxveil_Stage1_Zsh_ConstKey_AesCtr_B
Create hunting rule
Description:Foxveil ClickFix stage-1 zsh dropper, 2026-10-21 generator: any blob-array name and a _kb expression starting on a plain variable; hex blobs -> md5(constant _kb) -> openssl AES-128-CTR IV 0 -> gunzip, run via eval
Rule name:MAC_Dropper_Shell_CacheMaintenance_AES_CTR
Create hunting rule
Author:Marjoriefort
Description:macOS fake cache-maintenance dropper - payload AES-128-CTR via openssl, noms de commandes fragmentes

File information

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

Web download

zsh zsh ef1c40e8bca817a3849062b064f6bb64b5ae146831ac64771e8df56111dfe2ec

(this sample)

  
Delivery method
Distributed via web download

Comments