MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599. 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: 8


Intelligence 8 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599
SHA3-384 hash: ec85ba0781193df9b8551af90a63aaf88215b286e1910a16ef17e5d52a95776840e257366323e68f4e35ee258e5e2776
SHA1 hash: 6566bcf6104aeda0407fb1f27c66aa2c76263da5
MD5 hash: 1e394f9ac8a393f4deea581598441ea6
humanhash: river-quebec-tango-wisconsin
File name:x86_64
Download: download sample
Signature Mirai
Create hunting rule
File size:141'440 bytes
First seen:2026-08-07 01:51:41 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:ByrYwOWHo64Cqm4NgI9bjjYqUA0ndiTLUbkt:ByRH7E7YDfcwbkt
TLSH T10BD34C13E98080FDC49AD274879FD137EB32F89A12347B0F2B946E611D36F616B5A781
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-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 d031735c3f1885f132d422c246cf99fa8c7dd6ec10f78d4397fe50621ac84576
File size (compressed) :67'136 bytes
File size (de-compressed) :141'440 bytes
Format:linux/amd64
Packed file: d031735c3f1885f132d422c246cf99fa8c7dd6ec10f78d4397fe50621ac84576

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.32138.LX.BOT.UNOFFICIAL
Create hunting rule

Unix.Trojan.Gafgyt-9939811-0
Create hunting rule

Unix.Trojan.Mirai-10056451-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Manages services
Launching a process
Creating a file
Sends data to a server
Connection attempt
Receives data from a server
Changes access rights for a written file
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Kills processes
Runs as daemon
Changes access rights for a file
DNS request
Opens a port
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Creates or modifies files in /init.d to set up autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
bashlite expand lolbin mirai
Link:
https://www.filescan.io/uploads/6a753a5e3e7344ec6f8e02cd/reports/ba5ef085-b12b-4b17-9db1-d61a807f4981/overview
Verdict:
Unknown
File Type:
elf.64.le
Link:
https://opentip.kaspersky.com/cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d7b45eca-7d4d-4d3a-9ed6-9f40d7808203
Behavior Graph:
Download SVG
%3 guuid=bd2079a1-1900-0000-4dc7-03f3c1060000 pid=1729 /usr/bin/sudo guuid=f0647ca4-1900-0000-4dc7-03f3c4060000 pid=1732 /tmp/sample.bin dns net send-data guuid=bd2079a1-1900-0000-4dc7-03f3c1060000 pid=1729->guuid=f0647ca4-1900-0000-4dc7-03f3c4060000 pid=1732 execve 8b0a01dc-0728-52c1-8024-c4ba7801b8d6 8.8.8.8:53 guuid=f0647ca4-1900-0000-4dc7-03f3c4060000 pid=1732->8b0a01dc-0728-52c1-8024-c4ba7801b8d6 send: 31B b22bb4dc-07fc-50c6-aa61-19e0dd703acf iloveboats.st:4444 guuid=f0647ca4-1900-0000-4dc7-03f3c4060000 pid=1732->b22bb4dc-07fc-50c6-aa61-19e0dd703acf con guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737 /tmp/sample.bin net send-data write-config write-file zombie guuid=f0647ca4-1900-0000-4dc7-03f3c4060000 pid=1732->guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737 clone guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->b22bb4dc-07fc-50c6-aa61-19e0dd703acf send: 658B guuid=48d440a8-1900-0000-4dc7-03f3cd060000 pid=1741 /usr/bin/dash guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=48d440a8-1900-0000-4dc7-03f3cd060000 pid=1741 execve guuid=283547f0-1900-0000-4dc7-03f367070000 pid=1895 /usr/bin/dash guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=283547f0-1900-0000-4dc7-03f367070000 pid=1895 execve guuid=41c5c2f1-1900-0000-4dc7-03f36d070000 pid=1901 /tmp/sample.bin guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=41c5c2f1-1900-0000-4dc7-03f36d070000 pid=1901 clone guuid=cf61caf1-1900-0000-4dc7-03f36e070000 pid=1902 /tmp/sample.bin net send-data guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=cf61caf1-1900-0000-4dc7-03f36e070000 pid=1902 clone guuid=6b6bddf1-1900-0000-4dc7-03f36f070000 pid=1903 /tmp/sample.bin guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=6b6bddf1-1900-0000-4dc7-03f36f070000 pid=1903 clone guuid=3cf4e9f1-1900-0000-4dc7-03f370070000 pid=1904 /tmp/sample.bin guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=3cf4e9f1-1900-0000-4dc7-03f370070000 pid=1904 clone guuid=0138f1f1-1900-0000-4dc7-03f371070000 pid=1905 /tmp/sample.bin guuid=7c0af7a6-1900-0000-4dc7-03f3c9060000 pid=1737->guuid=0138f1f1-1900-0000-4dc7-03f371070000 pid=1905 clone guuid=ebc498a8-1900-0000-4dc7-03f3ce060000 pid=1742 /usr/bin/systemctl guuid=48d440a8-1900-0000-4dc7-03f3cd060000 pid=1741->guuid=ebc498a8-1900-0000-4dc7-03f3ce060000 pid=1742 execve guuid=78878af0-1900-0000-4dc7-03f368070000 pid=1896 /usr/bin/dash guuid=283547f0-1900-0000-4dc7-03f367070000 pid=1895->guuid=78878af0-1900-0000-4dc7-03f368070000 pid=1896 clone guuid=28d98ef1-1900-0000-4dc7-03f36b070000 pid=1899 /usr/bin/dash guuid=283547f0-1900-0000-4dc7-03f367070000 pid=1895->guuid=28d98ef1-1900-0000-4dc7-03f36b070000 pid=1899 clone guuid=6fca95f1-1900-0000-4dc7-03f36c070000 pid=1900 /usr/bin/dash guuid=283547f0-1900-0000-4dc7-03f367070000 pid=1895->guuid=6fca95f1-1900-0000-4dc7-03f36c070000 pid=1900 clone guuid=2e6597f0-1900-0000-4dc7-03f369070000 pid=1897 /usr/bin/dash guuid=78878af0-1900-0000-4dc7-03f368070000 pid=1896->guuid=2e6597f0-1900-0000-4dc7-03f369070000 pid=1897 clone guuid=738f9ef0-1900-0000-4dc7-03f36a070000 pid=1898 /usr/bin/grep guuid=78878af0-1900-0000-4dc7-03f368070000 pid=1896->guuid=738f9ef0-1900-0000-4dc7-03f36a070000 pid=1898 execve 2c327a97-612e-51d4-a753-91523bef871d iloveboats.st:4821 guuid=cf61caf1-1900-0000-4dc7-03f36e070000 pid=1902->2c327a97-612e-51d4-a753-91523bef871d send: 16B
Gathering data
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1953770
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Executes the "crontab" command typically for achieving persistence
Multi AV Scanner detection for submitted file
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to persist itself using cron
Sample tries to persist itself using System V runlevels
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1953770 Sample: x86_64.elf Startdate: 07/08/2026 Architecture: LINUX Score: 80 49 ip-api.com 208.95.112.1, 39308, 80 TUT-AS-TotalUptimeTechnologiesLLCUS United States 2->49 51 iloveboats.st 94.154.43.158, 4444, 4821, 49314 CDNEXTGB Turkey 2->51 53 Antivirus detection for dropped file 2->53 55 Antivirus / Scanner detection for submitted sample 2->55 57 Multi AV Scanner detection for submitted file 2->57 10 x86_64.elf 2->10         started        12 systemd snapd-env-generator 2->12         started        signatures3 process4 process5 14 x86_64.elf 10->14         started        file6 45 /usr/local/bin/4adofw1yxv7pb40, ELF 14->45 dropped 47 /etc/rc.local, ASCII 14->47 dropped 65 Sample reads /proc/mounts (often used for finding a writable filesystem) 14->65 67 Sample tries to persist itself using System V runlevels 14->67 18 x86_64.elf sh 14->18         started        20 x86_64.elf sh 14->20         started        22 x86_64.elf 14->22         started        24 4 other processes 14->24 signatures7 process8 process9 26 sh crontab 18->26         started        30 sh 18->30         started        32 sh 18->32         started        34 sh systemctl 20->34         started        file10 43 /var/spool/cron/crontabs/tmp.4Zyoaj, ASCII 26->43 dropped 61 Sample tries to persist itself using cron 26->61 63 Executes the "crontab" command typically for achieving persistence 26->63 36 sh crontab 30->36         started        39 sh grep 30->39         started        41 sh crontab 32->41         started        signatures11 process12 signatures13 59 Executes the "crontab" command typically for achieving persistence 36->59
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599
Detection:
mirai
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2026-08-07 01:52:36 UTC
File Type:
ELF64 Little (SO)
AV detection:
8 of 36 (22.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zmx7xgddkhro5jumgi677uaax4fyv5fudzgoll6qes55b5g72wmq._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/260807-cam79aywdt/
Behaviour
Reads runtime system information
Changes its process name
Creates/modifies Cron job
Modifies rc script
Modifies systemd
Write file to user bin folder
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599

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_Persistence_Hunt
Create hunting rule
Author:4r4
Description:Hunts for ELF files with persistence and download capabilities
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:unixredflags3
Create hunting rule
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 d031735c3f1885f132d422c246cf99fa8c7dd6ec10f78d4397fe50621ac84576

Mirai

elf cb2ffb986351e2eea68c323dffd000bf0b8af4b41e4ce5afd024bbd0f4dfd599

(this sample)

  
Dropped by
SHA256 d031735c3f1885f132d422c246cf99fa8c7dd6ec10f78d4397fe50621ac84576
  
URLhaus
https://urlhaus.abuse.ch/url/3896587/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3897611/
  
Dropped by
MD5 1a4e5fb9867616d104e17853809d0f64

Comments