MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fc5aca6066b8ae97e028ee68d64f46caee44d2a60255fc01489d6a46ac1c82a6. 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: | fc5aca6066b8ae97e028ee68d64f46caee44d2a60255fc01489d6a46ac1c82a6 |
|---|---|
| SHA3-384 hash: | 576ad7bd0fdef43a7aabc98a0c4085258d404a9dc8c3c9c6ab330ee240b501b0e8cb56a462e47926e78991f9af00e581 |
| SHA1 hash: | 930700bac6c8e9448bcc3b7d777d722581815ff1 |
| MD5 hash: | 501fbcddb999dd3147eabe76b97f152f |
| humanhash: | venus-hawaii-lactose-july |
| File name: | kworker.tmp.bin |
| Download: | download sample |
| Signature | Mirai |
| File size: | 407'944 bytes |
| First seen: | 2026-10-22 06:57:39 UTC |
| Last seen: | Never |
| File type: | elf |
| MIME type: | application/x-executable |
| ssdeep | 12288:iucrHmQUmfVYMaz3Grdk4IvfUxdS1Ob5O:iuAHxUmfVBa6cfUW1Ob |
| TLSH | T128844C17EF22EA37E15300F1529A9BB299717A3558638C47F3607EB8E6306D1E21532F |
| telfhash | t16ee18ab22afe4dec67e06902d24a2b22dd09e37714d035b205f359a92273f925eb1c35 |
| 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 |  Noche |
| Tags: | mirai |
Intelligence
File Origin
# of uploads :
1
# of downloads :
31
Origin country :
USVendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:
Behaviour
Runs as daemon
DNS request
Changes access rights for a file
Creating a process from a recently created file
Opens a port
Sets a written file as executable
Connection attempt
Creating a file
Creates or modifies symbolic links
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Traces processes
Writes files to system directory
Deletes a system binary file
Creates or modifies symbolic links in /init.d to set up autorun
Creates or modifies files to set up autorun
Creates or modifies files in /init.d to set up autorun
Gathering data
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
12
Number of processes launched:
4
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
Behaviour
Persistence
Process Renaming
Anti-Debugging
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-10-22T05:13:00Z UTC
Last seen:
2026-10-22T17:35:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
Verdict:
Suspicious
Score:
100%
Verdict:
Malware
File Type:
ELF
Threat name:
Linux.Backdoor.Mirai
Status:
Malicious
First seen:
2026-10-22 07:50:33 UTC
File Type:
ELF32 Little (Exe)
AV detection:
16 of 38 (42.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalation
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Reads system network configuration
Modifies Bash startup script
Creates/modifies Cron job
Creates/modifies environment variables
Enumerates active TCP sockets
Enumerates running processes
Modifies init.d
Modifies systemd
Reads MAC address of network interface
Write file to user bin folder
Executes dropped EXE
Traces itself
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.26
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: | ELF_IoT_Persistence_Hunt |
|---|---|
| Author: | 4r4 |
| Description: | Hunts for ELF files with persistence and download capabilities |
| Rule name: | ELF_Packer_Dropper_Fileless_Armhf |
|---|---|
| Author: | Serhii Kocherhan |
| Description: | Detects obfuscated Linux ELF packers/droppers featuring ChaCha20/RC4 decryption, memfd_create/execveat fileless execution capabilities, and unique binary artifacts. |
| Rule name: | ELF_Toriilike_persist |
|---|---|
| Author: | 4r4 |
| Description: | Detects Torii IoT Botnet (stealthier Mirai alternative) |
| Reference: | Identified via researched data |
| Rule name: | enterpriseapps2 |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Enterprise apps |
| Rule name: | exploit_any_poppopret |
|---|---|
| Author: | Jeff White [karttoon@gmail.com] @noottrak |
| Description: | Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries. |
| Rule name: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
| 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: | unixredflags3 |
|---|---|
| Author: | Tim Brown @timb_machine |
| Description: | Hunts for UNIX red flags |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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