MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 539a1cb6616fb0df02488b0ef8e7bdc22bb3ec51f45ce49b19771d0d956f3c8a. 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
Mirai
Vendor detections: 7
| SHA256 hash: | 539a1cb6616fb0df02488b0ef8e7bdc22bb3ec51f45ce49b19771d0d956f3c8a |
|---|---|
| SHA3-384 hash: | a71992dbeecfeaa606e4a3001ef34411e5934dcc31b647b4b466b7ea8e488c147b286b555f57568fe1679bf2a07564cd |
| SHA1 hash: | 44b881f5f96aefe99cac919d118ba5196fe81dba |
| MD5 hash: | b0730c4c911b7d0567b52f804ad5f1e8 |
| humanhash: | alanine-pip-west-delta |
| File name: | x86_64 |
| Download: | download sample |
| Signature | Mirai |
| File size: | 79'212 bytes |
| First seen: | 2026-10-17 08:47:47 UTC |
| Last seen: | Never |
| File type: | elf |
| MIME type: | application/x-executable |
| ssdeep | 1536:E3BzRXIma344iR/bpn03SYdsjBkN73AoKw/Doq8hNTVMJqQs:ExzR344J/R03bdQq73HrDoq8ZMJqP |
| TLSH | T1BF7312F1936B48ECDAB16775FA0E69F9F4819F74AA0347043CEAB2760CF71246908D91 |
| TrID | 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12) 49.8% (.O) ELF Executable and Linkable format (generic) (4000/1) |
| Magika | elf |
| Reporter |  abuse_ch |
| Tags: | elf UPX |
UPX packed
This file is packed with UPX. We have therefore unpacked the file. Below is furhter information about the unpacked (de-compressed) file.
| File size (compressed) : | 79'212 bytes |
|---|---|
| File size (de-compressed) : | 203'432 bytes |
| Format: | linux/amd64 |
| Unpacked file: | 204e6d14591590ac52bc5c342ceb5ca87abdaa90d29b6e7cd1c84ebc291e7c5a |
Intelligence
File Origin
# of uploads :
1
# of downloads :
76
Origin country :
DEVendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Behaviour
Kills processes
Creating a file
Sets a file as executable
Locks files
Launching a process
Sets a written file as executable
Runs as daemon
Creates directories
Manages services
Writes files to system subdirectory
Creates or modifies files in /cron to set up autorun
Kills critical processes
Substitutes an application name
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
2.5/10
Confidence:
100%
Tags:
packed upx
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-10-17T00:44:00Z UTC
Last seen:
2026-10-17T04:56:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
Verdict:
Suspicious
Result
Threat name:
Gafgyt, Mirai
Detection:
malicious
Classification:
troj.evad.mine
Score:
100 / 100
Signature
Drops invisible ELF files
Found malware configuration
Found strings related to Crypto-Mining
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample is packed with UPX
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
ELF
Gathering data
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
9/10
Tags:
antivm defense_evasion discovery exection execution linux persistence privilege_escalation upx
Behaviour
Command and Scripting Interpreter: Unix Shell
Reads runtime system information
System Network Configuration Discovery
Writes file to shm directory
Writes file to tmp directory
Changes its process name
Checks CPU configuration
Reads system network configuration
UPX packed file
Creates/modifies Cron job
Deletes log files
Enumerates active TCP sockets
Enumerates running processes
Modifies rc script
Modifies systemd
Deletes itself
Deletes journal logs
Deletes system logs
Modifies the /etc/hosts DNS resolution file
Modifies the dynamic linker configuration file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
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: | ELF_IoT_DVR_Botnet_Hama_UPX |
|---|---|
| Author: | Serhii Kocherhan |
| Description: | Detects packed and unpacked ELF IoT/DVR botnet variants targeting UPX compression structures and uncompressed code |
| Rule name: | linux_generic_ipv6_catcher |
|---|---|
| Author: | @_lubiedo |
| Description: | ELF samples using IPv6 addresses |
| Rule name: | SUSP_ELF_LNX_UPX_Compressed_File |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects a suspicious ELF binary with UPX compression |
| Reference: | Internal Research |
| Rule name: | TH_Generic_MassHunt_Linux_Malware_2026_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Generic Linux malware mass-hunt rule - 2026 |
| Reference: | https://cyfare.net/ |
| Rule name: | upx_packed_elf_v1 |
|---|---|
| Author: | RandomMalware |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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