MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4. 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: 6

Intelligence 6 IOCs YARA 1 File information Comments

SHA256 hash:	ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4
SHA3-384 hash:	1d4ba0e6ed966ea48d3e90ea7222cc50424498a98c758e687b5fc3eb5920c53ce6216f30a3421a5bfdfaea86cda95f73
SHA1 hash:	832076a45dc324a1e00016653bad9bdd790d667c
MD5 hash:	3a76f58d407530860bc749cb4496320c
humanhash:	enemy-uncle-romeo-florida
File name:	ok
Download:	download sample
File size:	1'608 bytes
First seen:	2026-08-11 13:39:07 UTC
Last seen:	Never
File type:	sh
MIME type:	text/x-shellscript
ssdeep	24:IuDNiKklKaNsHIH4f4uN/DzjdmIs04B1Zv:XoK2KaNsoYf42rVIZ
TLSH	T10C31509B04142A321503CA8D73723648B28DA5EB3C9FD7D5A88D0FE956892CCF162B5E
TrID	70.0% (.SH) Linux/UNIX shell script (7000/1) 30.0% (.) Unix-like shebang (var.3) (gen) (3000/1)
Magika	shell
Reporter	abuse_ch
Tags:	sh

Shell script dropper

This file seems to be a shell script dropper, using wget, ftpget and/or curl. More information about the corresponding payload URLs are shown below.

URL	Malware sample (SHA256 hash)	Signature	Tags
http://5.182.210.174/b4efc0	n/a	n/a	ua-wget
http://5.182.210.174/110181	n/a	n/a	ua-wget
http://5.182.210.174/9da0b2	n/a	n/a	ua-wget
http://5.182.210.174/e7addc	n/a	n/a	ua-wget
http://5.182.210.174/2d7d14	n/a	n/a	ua-wget
http://5.182.210.174/76341d	n/a	n/a	ua-wget
http://5.182.210.174/7e44c2	n/a	n/a	ua-wget
http://5.182.210.174/7f80fa	n/a	n/a	ua-wget
http://5.182.210.174/83c238	n/a	n/a	ua-wget
http://5.182.210.174/6337f1	n/a	n/a	ua-wget
http://5.182.210.174/0b3b49	n/a	n/a	ua-wget
http://5.182.210.174/d2aaed	n/a	n/a	ua-wget

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

evasive

Link:

https://www.filescan.io/uploads/6a7b2624397ae952821af088/reports/3f7116db-cb33-4c7b-b0eb-5e93fe72c7b0/overview

Verdict:

Malicious

File Type:

unix shell

First seen:

2026-08-11T11:22:00Z UTC

Last seen:

2026-08-12T04:35:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/3fffe2d9-7665-4c07-b630-2af37a690cfb

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4/

Threat name:

Win32.Trojan.Generic

Status:

Suspicious

First seen:

2026-08-11 13:41:01 UTC

File Type:

Text (Shell)

AV detection:

11 of 23 (47.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=55frg6yq26yylrds2guwyttsppvdf7zhprgnyueh2zbuhzskmpka._file

Result

Malware family:

n/a

Score:

7/10

Tags:

antivm defense_evasion discovery linux

Link:

https://tria.ge/reports/260811-qycy3sfk4z/

Behaviour

Reads runtime system information

Writes file to tmp directory

Checks CPU configuration

File and Directory Permissions Modification

Executes dropped EXE

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Legit

Score:

0.11

Link:

https://yomi.yoroi.company/submissions/ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4

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:	ach_202412_suspect_bash_script Create hunting rule
Author:	abuse.ch
Description:	Detects suspicious Linux bash scripts

File information

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

Web download

sh ef4b137b10d7b185c472d1a96c4e727bea32ff277c4cdc5087d64343e64a63d4

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3897671/

Delivery method

Distributed via web download

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