MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082. 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:	81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082
SHA3-384 hash:	ebc1c9a81d767c55273435fa26529a69cc3bd9f1a62260c67d7ecd7593a8e8d319460e5777d4ca68e18b56590ccdba8b
SHA1 hash:	b49da8135295643544df3c59eb1c3409ed1ec4f6
MD5 hash:	db20fe2d0a9e61bf776f4606cc587b84
humanhash:	johnny-twenty-equal-floor
File name:	k.php
Download:	download sample
File size:	45'521 bytes
First seen:	2026-07-23 01:24:21 UTC
Last seen:	2026-07-23 05:43:17 UTC
File type:	sh
MIME type:	text/x-shellscript
ssdeep	768:t6Utd8/f9GKYpr9GKYp82fkR4nnA9GKYpr9GKYp82fkR4nnx:5co
TLSH	T14B138D651A853C24AE9889371C7F2F0CB9A983E1300451DDBFCB3CF58C59AACE21971D
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://160.119.69.4/x	n/a	n/a	160-119-69-4 sh ua-wget

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

No detections

Detection(s):

SecuriteInfo.com.Linux.BackDoor.Siggen.759-3.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 bash evasive lolbin masquerade obfuscated

Link:

https://www.filescan.io/uploads/6a616d5036777d7f0ce14d8d/reports/47dcb839-e3b4-48ce-bacf-4541eb0b893e/overview

Verdict:

Malicious

File Type:

unix shell

First seen:

2026-07-22T23:30:00Z UTC

Last seen:

2026-07-24T18:22:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082/results?tab=lookup

Status:

terminated

Link:

https://sandbox.kunai.rocks/analysis/52442ca9-8203-4e0b-ae7b-5da2709ec794

Behavior Graph:

Download SVG

Score:

93%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082/

Threat name:

Linux.Trojan.Generic

Status:

Suspicious

First seen:

2026-07-23 01:25:33 UTC

File Type:

Text (Shell)

AV detection:

12 of 36 (33.33%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=qhh3dp7l4byvdj2ekr7ebjy62midrlzeq7ibbjagmcpjeesd6cba._file

Result

Malware family:

n/a

Score:

8/10

Tags:

antivm credential_access defense_evasion discovery execution linux persistence privilege_escalation

Link:

https://tria.ge/reports/260723-bsnq3ayfpd/

Behaviour

Enumerates kernel/hardware configuration

Reads runtime system information

Writes file to tmp directory

Deobfuscate/Decode Files or Information

Checks CPU configuration

Creates .desktop file

Modifies Bash startup script

Adds a user to the system

Creates/modifies Cron job

Creates/modifies environment variables

Deletes log files

Enumerates running processes

Modifies rc script

File and Directory Permissions Modification

Deletes Audit logs

Deletes system logs

OS Credential Dumping

Modifies password files for system users/ groups

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

Threat name:

Legit

Score:

0.16

Link:

https://yomi.yoroi.company/submissions/81cfb1bfebe07151a744547e40a71ed31038af2487d010a406609e921243f082

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:	SUSP_LNX_Base64_Exec_Apr24 Create hunting rule
Author:	Christian Burkard
Description:	Detects suspicious base64 encoded shell commands (as seen in Palo Alto CVE-2024-3400 exploitation)
Reference:	Internal Research