MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 851c8c27ee6f1fc6eb736c01aba177be69bb7de7a7daa7e274bf1aaa5d1596e6. 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


Intelligence 9 IOCs YARA 9 File information Comments

SHA256 hash: 851c8c27ee6f1fc6eb736c01aba177be69bb7de7a7daa7e274bf1aaa5d1596e6
SHA3-384 hash: 5b461f0d29ae8369cd1716ab5311c5bf33b0d32645d990473f0773cc8160aa4fcba89b400d9a719c885fba0ef0376e28
SHA1 hash: 249c8f6d9a9cfccd449c630eeef863dfc6572230
MD5 hash: c89d5fb4fe5960cbfa4025fc0c0dc405
humanhash: jig-early-kentucky-fifteen
File name:nullnet.i586
Download: download sample
Signature Mirai
File size:65'564 bytes
First seen:2026-07-20 19:10:26 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:lLr8NmCDYat2XN3q3mAm8MtIClf4n853hd52j/fEYCBHjyq+6sjHxheXxa6HQfpC:lL2dwa39m8MtIClf4nI3hdcbUc6sjRk8
TLSH T1555309C3E903EDB2DC2220B816A757619936F5363831B943F7693EB0E992AD1D90335D
telfhash t1f421e4f52efa1ce8b7e25400900d1755254eba7f5810b6e1c622ed9162eff02807bc3c
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 :
91
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Runs as daemon
DNS request
Opens a port
Substitutes an application name
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc masquerade
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
0
Number of processes launched:
5
Processes remaning?
true
Remote TCP ports scanned:
not identified
Behaviour
Process Renaming
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-07-20T16:17:00Z UTC
Last seen:
2026-07-21T06:04:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
%3 guuid=dfc4b050-1b00-0000-bc47-10e2400a0000 pid=2624 /usr/bin/sudo guuid=4752b452-1b00-0000-bc47-10e2460a0000 pid=2630 /tmp/sample.bin net guuid=dfc4b050-1b00-0000-bc47-10e2400a0000 pid=2624->guuid=4752b452-1b00-0000-bc47-10e2460a0000 pid=2630 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=4752b452-1b00-0000-bc47-10e2460a0000 pid=2630->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 con guuid=21b2df52-1b00-0000-bc47-10e2480a0000 pid=2632 /tmp/sample.bin guuid=4752b452-1b00-0000-bc47-10e2460a0000 pid=2630->guuid=21b2df52-1b00-0000-bc47-10e2480a0000 pid=2632 clone guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633 /tmp/sample.bin dns net send-data zombie guuid=4752b452-1b00-0000-bc47-10e2460a0000 pid=2630->guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633 clone guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 34B 428c7e67-6c37-54a6-ae42-2c968795c7c1 botnet.b5m.co.uk:1420 guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633->428c7e67-6c37-54a6-ae42-2c968795c7c1 send: 7B guuid=05d60a53-1b00-0000-bc47-10e24a0a0000 pid=2634 /tmp/sample.bin guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633->guuid=05d60a53-1b00-0000-bc47-10e24a0a0000 pid=2634 clone guuid=086d1053-1b00-0000-bc47-10e24b0a0000 pid=2635 /tmp/sample.bin guuid=0bb7e352-1b00-0000-bc47-10e2490a0000 pid=2633->guuid=086d1053-1b00-0000-bc47-10e24b0a0000 pid=2635 clone
Threat name:
Linux.Worm.Mirai
Status:
Malicious
First seen:
2026-07-20 19:12:36 UTC
File Type:
ELF32 Little (Exe)
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
credential_access defense_evasion discovery linux upx
Behaviour
Reads runtime system information
Changes its process name
Reads process memory
Enumerates running processes
Modifies Watchdog functionality
Please note that we are no longer able to provide a coverage score for Virus Total.

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:CVE_2017_17215
Author:NDA0E
Description:Detects exploitation attempt of CVE-2017-17215
Rule name:ELF_Mirai
Author:NDA0E
Description:Detects multiple Mirai variants
Rule name:Linux_Exploit_CVE_2017_17215_8b78a857
Author:Elastic Security
Description:Exploit code used in the ZeroBot malware
Rule name:Linux_Trojan_Mirai_389ee3e9
Author:Elastic Security
Rule name:Linux_Trojan_Mirai_575f5bc8
Author:Elastic Security
Rule name:MAL_ELF_LNX_Mirai_Oct10_1
Author:Florian Roth (Nextron Systems)
Description:Detects ELF Mirai variant
Reference:Internal Research
Rule name:MAL_ELF_LNX_Mirai_Oct10_1_RID2F39
Author:Florian Roth
Description:Detects ELF Mirai variant
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: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.

Web download

Mirai

elf 851c8c27ee6f1fc6eb736c01aba177be69bb7de7a7daa7e274bf1aaa5d1596e6

(this sample)

  
Delivery method
Distributed via web download

Comments