MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433. 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: 7

Intelligence 7 IOCs YARA 1 File information Comments

SHA256 hash:	57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433
SHA3-384 hash:	efb59995304476aeb060578566cedb5308c00b68165c28874113b24f812806c150838754a481e314b17b967879abc58d
SHA1 hash:	91b81cdd2dbd074485eecfc0bb39fc99b71a1f2f
MD5 hash:	47f3aa833b598ab0cdac9179e1f202ae
humanhash:	river-eleven-oscar-skylark
File name:	k.php.sh
Download:	download sample
File size:	45'512 bytes
First seen:	2026-05-22 05:10:32 UTC
Last seen:	2026-05-29 07:18:36 UTC
File type:	sh
MIME type:	text/x-shellscript
ssdeep	768:jr9NyXsZztCu9GKYpr9GKYp82fkR4nnA9GKYpr9GKYp82fkR4nn5:XHusZKcW
TLSH	T1D0136C6526953C25AE99883B5C7E2F0CB9A983E1304491DDBFCA3CF18C15A9CE318B58
TrID	70.0% (.SH) Linux/UNIX shell script (7000/1) 30.0% (.) Unix-like shebang (var.3) (gen) (3000/1)
Magika	shell
Reporter	BastianHein
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.759.3771.4091.UNOFFICIAL

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 bash evasive lolbin masquerade obfuscated

Link:

https://www.filescan.io/uploads/6a0fe556875badc3b391679e/reports/4c6a7bfb-9553-4780-a110-3d3951732d44/overview

Verdict:

Malicious

File Type:

unix shell

First seen:

2026-05-22T02:12:00Z UTC

Last seen:

2026-05-23T19:00:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan-Downloader.Shell.Agent.bc

Link:

https://opentip.kaspersky.com/57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433/results?tab=lookup

Status:

Failed

Link:

https://sandbox.kunai.rocks/analysis/1607351a-60fb-4b76-b895-27f1cf6a7ccf

Score:

94%

Verdict:

Malware

File Type:

SCRIPT

Link:

https://malprob.io/report/57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433/

Verdict:

Malicious

Threat:

Trojan-Downloader.Shell.Agent

Link:

https://tip.neiki.dev/file/57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433

Threat name:

Win32.Trojan.Vigorf

Status:

Malicious

First seen:

2026-05-22 05:09:32 UTC

File Type:

Text (Shell)

AV detection:

10 of 24 (41.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=k7finr37bzwhrdy2vz57ws3gvpzcynd6zu5gjl37uixxe3ebsqzq._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/260522-ft4acsew7k/

Behaviour

Enumerates kernel/hardware configuration

Reads runtime system information

System Network Configuration Discovery

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:

Suspicious File

Score:

0.36

Link:

https://yomi.yoroi.company/submissions/57ca86c77f0e6c788f1aae7bfb4b66abf22c347ecd3a64af7fa22f726c819433

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