MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4257f0992f19704aa44249881566901db0943a83f90c7ae563777473a7017b25. 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: 9
| SHA256 hash: | 4257f0992f19704aa44249881566901db0943a83f90c7ae563777473a7017b25 |
|---|---|
| SHA3-384 hash: | 619fbc6881d5e5a130d9548f64a4750194f77692b3322cbffc9c44245f5bcd4e70a77b84223d170b624435472f7d6b17 |
| SHA1 hash: | d44ffa917c3813521f7a90e2751961c6dafda1e0 |
| MD5 hash: | 234b3c9d8767b46c2c176a9e87dcdbfd |
| humanhash: | kentucky-tango-winter-venus |
| File name: | x86_32.urbotnetisass |
| Download: | download sample |
| Signature | Mirai |
| File size: | 161'964 bytes |
| First seen: | 2025-09-11 03:47:20 UTC |
| Last seen: | Never |
| File type: | elf |
| MIME type: | application/x-executable |
| ssdeep | 3072:lQNuwQFO3vTXmnPz+GHtj+thNpCI2mDM7ogvKDwvVHm2QBRA:lh1FO3vTXmP6GHu9DjstHOBRA |
| TLSH | T177F37D42EA43D0F1F89611B011E787265EB3EE36543ADA46D7B52E30AC66600D72F7BC |
| telfhash | t1b0718fb22eba1eec7390dd01c74e1b12fd4ad6bb395035b9067307e823f6e411462879 |
| 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 mirai |
Intelligence
File Origin
# of uploads :
1
# of downloads :
52
Origin country :
DEVendor Threat Intelligence
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Receives data from a server
Opens a port
Kills processes
Mounts file systems
Collects information on the network activity
Runs as daemon
Creating a file
Deletes a file
Unmounts file systems
Sends data to a server
Connection attempt
Writes files to system directory
Deletes a system binary file
Substitutes an application name
Verdict:
Unknown
Threat level:
0/10
Confidence:
100%
Tags:
anti-vm lolbin remote threat
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2025-09-11T01:12:00Z UTC
Last seen:
2025-09-11T01:12:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
Verdict:
Suspicious
Result
Threat name:
Gafgyt, Mirai
Detection:
malicious
Classification:
spre.troj.evad
Score:
96 / 100
Signature
Deletes system log files
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to kill multiple processes (SIGKILL)
Writes identical ELF files to multiple locations
Yara detected Gafgyt
Yara detected Mirai
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
ELF
Threat name:
Linux.Worm.Mirai
Status:
Malicious
First seen:
2025-09-11 03:49:30 UTC
File Type:
ELF32 Little (Exe)
AV detection:
20 of 38 (52.63%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
credential_access defense_evasion discovery linux
Behaviour
Reads runtime system information
Changes its process name
Reads system network configuration
Reads process memory
Deletes log files
Enumerates running processes
Writes file to system bin folder
Deletes system logs
Modifies Watchdog functionality
Verdict:
Malicious
Tags:
trojan gafgyt mirai Unix.Trojan.Mirai-7755770-0
YARA:
Linux_Trojan_Gafgyt_5bf62ce4 Linux_Trojan_Mirai_5f7b67b8 Linux_Trojan_Mirai_389ee3e9 Linux_Trojan_Mirai_cc93863b
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: | ach_202503_elf_Mirai |
|---|---|
| Author: | abuse.ch |
| Description: | Detects Mirai 'TSource' ELF files |
| Rule name: | CP_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| Rule name: | enterpriseapps2 |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Enterprise apps |
| Rule name: | linux_generic_ipv6_catcher |
|---|---|
| Author: | @_lubiedo |
| Description: | ELF samples using IPv6 addresses |
| Rule name: | Linux_Trojan_Gafgyt_5bf62ce4 |
|---|---|
| Author: | Elastic Security |
| Rule name: | Linux_Trojan_Mirai_389ee3e9 |
|---|---|
| Author: | Elastic Security |
| Rule name: | Linux_Trojan_Mirai_5f7b67b8 |
|---|---|
| Author: | Elastic Security |
| Rule name: | Linux_Trojan_Mirai_cc93863b |
|---|---|
| Author: | Elastic Security |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
| Rule name: | unixredflags3 |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Hunts for UNIX red flags |
| Rule name: | vmdetect |
|---|---|
| Author: | nex |
| Description: | Possibly employs anti-virtualization techniques |
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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