MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502
SHA3-384 hash: f1138bc93bf406bd2828bdc4612687ed9e0b0812d071dbdacb252b5cf0e57f2126d64af4d90d92122819c4f7aabe3cbf
SHA1 hash: cbaf41a395f10e26234f9f2828d7bbc9f1aa3a07
MD5 hash: 2819bb3b7948e70aafa6d43f1fbc9448
humanhash: johnny-montana-hamper-monkey
File name:x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:44'460 bytes
First seen:2025-12-13 23:37:56 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:d/oKd/38fWybwPiEM/LavbGAqoMZWqWBfb5SwC/Ay6osn9wFJPK6Cs25x0rzN:11h3wXb0WaqoMZOyd9/SwTPK6XSgN
TLSH T1AC13F1F7527FA1B0C876F4718C096604D9B96807B8992FDF4EA5B1EBFA728841135DC0
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 UPX
File size (compressed) :44'460 bytes
File size (de-compressed) :87'232 bytes
Format:linux/amd64
Unpacked file: 8a0b5edb815f273296b39a82f72ad400c37865dfabccb3d472ae8963ba300074

Intelligence

File Origin
# of uploads :
1
# of downloads :
50
Origin country :
DE DE
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/5dcb6878-f5fb-4b69-9207-3f3db7210a23/
Detection(s):
SecuriteInfo.com.Linux.Mirai-19.UNOFFICIAL
Create hunting rule

Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/693df8e9cf690d27f3decd15/reports/c61b4487-0527-42c9-89ba-45ef95717bd3/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-12-13T20:45:00Z UTC
Last seen:
2025-12-13T21:05:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Mirai.h HEUR:Backdoor.Linux.Mirai.cw HEUR:Backdoor.Linux.Mirai.b
Link:
https://opentip.kaspersky.com/ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502/results?tab=lookup
Malware family:
Mirai
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4deee040-c6d6-41b0-8269-f61fd23fa5e6
Result
Threat name:
Mirai, Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.evad.mine
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1832270
Signature
Found strings related to Crypto-Mining
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Reads system files that contain records of logged in users
Sample is packed with UPX
Sample reads /proc/mounts (often used for finding a writable filesystem)
Yara detected Mirai
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1832270 Sample: x86_64.elf Startdate: 14/12/2025 Architecture: LINUX Score: 88 124 169.254.169.254, 80 USDOSUS Reserved 2->124 126 87.121.84.60, 33506, 9772 SKATTV-ASBG Bulgaria 2->126 128 2 other IPs or domains 2->128 130 Malicious sample detected (through community Yara rule) 2->130 132 Multi AV Scanner detection for submitted file 2->132 134 Yara detected Mirai 2->134 136 2 other signatures 2->136 14 gdm3 gdm-session-worker 2->14         started        16 gdm3 gdm-session-worker 2->16         started        18 systemd systemd 2->18         started        20 20 other processes 2->20 signatures3 process4 signatures5 23 gdm-session-worker gdm-x-session 14->23         started        25 gdm-session-worker gdm-wayland-session 16->25         started        27 systemd dbus-daemon 18->27         started        30 systemd 18->30         started        32 systemd pulseaudio 18->32         started        40 2 other processes 18->40 138 Found strings related to Crypto-Mining 20->138 140 Sample reads /proc/mounts (often used for finding a writable filesystem) 20->140 142 Reads system files that contain records of logged in users 20->142 34 accounts-daemon language-validate 20->34         started        36 x86_64.elf 20->36         started        38 x86_64.elf 20->38         started        process6 signatures7 42 gdm-x-session dbus-run-session 23->42         started        44 gdm-x-session Xorg Xorg.wrap Xorg 23->44         started        46 gdm-x-session Default 23->46         started        48 gdm-wayland-session dbus-run-session 25->48         started        148 Sample reads /proc/mounts (often used for finding a writable filesystem) 27->148 50 systemd 30-systemd-environment-d-generator 30->50         started        52 language-validate language-options 34->52         started        process8 process9 54 dbus-run-session gnome-session gnome-session-binary 1 42->54         started        56 dbus-run-session dbus-daemon 42->56         started        59 Xorg sh 44->59         started        61 Xorg sh 44->61         started        63 dbus-run-session dbus-daemon 48->63         started        65 dbus-run-session gnome-session gnome-session-binary 1 48->65         started        67 language-options sh 52->67         started        signatures10 77 19 other processes 54->77 144 Sample reads /proc/mounts (often used for finding a writable filesystem) 56->144 69 dbus-daemon 56->69         started        71 dbus-daemon 56->71         started        80 9 other processes 56->80 73 sh xkbcomp 59->73         started        75 sh xkbcomp 61->75         started        82 7 other processes 63->82 84 2 other processes 65->84 86 2 other processes 67->86 process11 signatures12 88 dbus-daemon at-spi-bus-launcher 69->88         started        90 dbus-daemon gjs 71->90         started        152 Sample reads /proc/mounts (often used for finding a writable filesystem) 77->152 93 gnome-shell ibus-daemon 77->93         started        95 gsd-print-notifications 77->95         started        97 gnome-session-check-accelerated gnome-session-check-accelerated-gl-helper 77->97         started        99 gnome-session-check-accelerated gnome-session-check-accelerated-gles-helper 77->99         started        103 9 other processes 80->103 101 dbus-daemon false 82->101         started        105 6 other processes 82->105 process13 signatures14 107 at-spi-bus-launcher dbus-daemon 88->107         started        146 Sample reads /proc/mounts (often used for finding a writable filesystem) 90->146 110 ibus-daemon 93->110         started        112 ibus-daemon ibus-memconf 93->112         started        114 ibus-daemon ibus-engine-simple 93->114         started        116 gsd-print-notifications gsd-printer 95->116         started        process15 signatures16 150 Sample reads /proc/mounts (often used for finding a writable filesystem) 107->150 118 dbus-daemon 107->118         started        120 ibus-daemon ibus-x11 110->120         started        process17 process18 122 dbus-daemon at-spi2-registryd 118->122         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502/
Verdict:
Malicious
Threat:
Family.MIRAI
Link:
https://tip.neiki.dev/file/ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502
Threat name:
Linux.Backdoor.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-12-13 23:38:23 UTC
File Type:
ELF64 Little (Exe)
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=54yyi34neznk7ujhbxyclrslgeufuahmgynfdo6v5kdwo7qhguba._file
Result
Malware family:
mirai
Create hunting rule
Score:
  10/10
Tags:
family:mirai botnet credential_access discovery linux upx
Link:
https://tria.ge/reports/251213-3mwy2aynbm/
Behaviour
Reads runtime system information
Changes its process name
Reads process memory
Enumerates running processes
Traces itself
Mirai
Mirai family
Malware Config
C2 Extraction:
ahahahahahajs.unproxy.st
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f115f84b-168c-4492-8009-d14af43b2b5d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502

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_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Mirai

elf ef31846f8d265aafd1270df025c64b31285a00ec361a51bbd5ea87677e073502

(this sample)

Mirai

elf 8a0b5edb815f273296b39a82f72ad400c37865dfabccb3d472ae8963ba300074

  
URLhaus
https://urlhaus.abuse.ch/url/3724830/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 8a0b5edb815f273296b39a82f72ad400c37865dfabccb3d472ae8963ba300074
  
Dropping
MD5 924a7113fceba76ef0c011cea0a3002a
  
URLhaus
https://urlhaus.abuse.ch/url/3713669/
  
URLhaus
https://urlhaus.abuse.ch/url/3713677/
  
URLhaus
https://urlhaus.abuse.ch/url/3683086/

Comments