MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b. 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


CoinMiner


Vendor detections: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b
SHA3-384 hash: 9f53f473061e00ee98674e6437af291cb28438b6845cdf024ca84a57e9dabff1447c02f8421df2679bda756bc693fb7e
SHA1 hash: 257cb22c864ffcddd2eb9c803ddbafa35ecc248e
MD5 hash: 4d39d97d59ecd76696c8a25c72492334
humanhash: early-johnny-winner-hydrogen
File name:kworkerd-irq
Download: download sample
Signature CoinMiner
Create hunting rule
File size:235'336 bytes
First seen:2026-06-25 18:24:41 UTC
Last seen:2026-06-25 19:16:44 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:w5cFo3ExQCRGVHSqZhOUrr1v9gbAwUJVvjBmA0AZv:3o3tQGVHXZhOUrr12UD1hv
TLSH T13D3428A9BC40DB26C6E427BAFB5D829933134F74C3DD3105CD245F2936EB95B0A3A582
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 f54a8b51f2d6ed2953a1d9edb19da1c7e44a6e53bb610a24bc7195c6bdc18825
File size (compressed) :101'912 bytes
File size (de-compressed) :235'336 bytes
Format:linux/arm
Packed file: f54a8b51f2d6ed2953a1d9edb19da1c7e44a6e53bb610a24bc7195c6bdc18825

Intelligence

File Origin
# of uploads :
2
# of downloads :
65
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Armada.1.1421.26544.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Opens a port
Collects information on the CPU
Creating a file in the %temp% directory
Changes access rights for a written file
Creating a file
Sends data to a server
Connection attempt
Receives data from a server
Runs as daemon
Sets a written file as executable
Changes the time when the file was created, accessed, or modified
Launching a process
Manages services
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
Deleting of the original file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
base64 expand gcc lolbin rust
Link:
https://www.filescan.io/uploads/6a3d72a0f96a0d780a267995/reports/149c345e-e73f-4ccf-a2ef-02de5d6435ab/overview
Verdict:
Unknown
File Type:
elf.32.le
Link:
https://opentip.kaspersky.com/6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/52818a4c-7e81-4757-b9d5-19157847cd3b
Behavior Graph:
Download SVG
%3 guuid=4ed0c893-1a00-0000-248e-1e26b20a0000 pid=2738 /usr/bin/sudo guuid=10f52f97-1a00-0000-248e-1e26bb0a0000 pid=2747 /tmp/sample.bin guuid=4ed0c893-1a00-0000-248e-1e26b20a0000 pid=2738->guuid=10f52f97-1a00-0000-248e-1e26bb0a0000 pid=2747 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/aee34f11-2029-4fbc-880d-8889cc878881
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1933897
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops invisible ELF files
Executes itself again with its parent PID as an argument (indicative of hampering debugging)
Executes the "crontab" command typically for achieving persistence
Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens
Found strings related to Crypto-Mining
Opens /sys/class/net/* files useful for querying network interface information
Performs DNS TXT record lookups
Sample deletes itself
Sample tries to persist itself using cron
Searches for CPU information (likely indicative of DDoS capability)
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1933897 Sample: kworkerd-irq.elf Startdate: 25/06/2026 Architecture: LINUX Score: 100 84 api.robotmarkethub.com 2->84 86 91.239.211.89, 34892, 34894, 37692 HOSTKEY-ASNL Germany 2->86 88 99 other IPs or domains 2->88 98 Antivirus detection for dropped file 2->98 100 Antivirus / Scanner detection for submitted sample 2->100 102 Yara detected Xmrig cryptocurrency miner 2->102 12 systemd sh 2->12         started        14 kworkerd-irq.elf 2->14         started        17 systemd snapd-env-generator 2->17         started        19 systemd snapd-env-generator 2->19         started        signatures3 104 Performs DNS TXT record lookups 84->104 process4 signatures5 21 sh sh 12->21         started        24 sh wget 12->24         started        26 sh rm 12->26         started        120 Found strings related to Crypto-Mining 14->120 28 kworkerd-irq.elf 14->28         started        process6 file7 80 /dev/shm/.exectest.5464, POSIX 21->80 dropped 30 sh .d 21->30         started        32 sh wget 21->32         started        36 sh 21->36         started        40 28 other processes 21->40 82 /tmp/..redis-sentinel, POSIX 24->82 dropped 38 kworkerd-irq.elf 28->38         started        process8 file9 42 .d 30->42         started        74 /dev/shm/.d, ELF 32->74 dropped 90 Drops invisible ELF files 32->90 44 sh grep 36->44         started        47 kworkerd-irq.elf sh 38->47         started        49 kworkerd-irq.elf sh 38->49         started        92 Searches for CPU information (likely indicative of DDoS capability) 40->92 94 Sample deletes itself 40->94 96 Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens 40->96 signatures10 process11 signatures12 51 .d 42->51         started        118 Searches for CPU information (likely indicative of DDoS capability) 44->118 55 sh systemctl 47->55         started        57 sh systemctl 49->57         started        process13 file14 76 /var/spool/cron/crontabs/root, ASCII 51->76 dropped 106 Opens /sys/class/net/* files useful for querying network interface information 51->106 108 Sample deletes itself 51->108 110 Sample tries to persist itself using cron 51->110 59 .d sh 51->59         started        62 .d sh 51->62         started        64 .d 51->64         started        66 199 other processes 51->66 signatures15 process16 signatures17 116 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 59->116 68 sh crontab 59->68         started        72 sh crontab 62->72         started        process18 file19 78 /var/spool/cron/crontabs/tmp.O1iFKi, ASCII 68->78 dropped 112 Sample tries to persist itself using cron 68->112 114 Executes the "crontab" command typically for achieving persistence 68->114 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b/
Threat name:
Linux.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-06-25 18:29:43 UTC
File Type:
ELF32 Little (SO)
AV detection:
4 of 36 (11.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nllnq3efroh37votghntwjqhtvysrtfmihhhgmzisrvjdt3o3vnq._file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b

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_arm_mips_ko_so
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 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

CoinMiner

elf f54a8b51f2d6ed2953a1d9edb19da1c7e44a6e53bb610a24bc7195c6bdc18825

CoinMiner

elf 6ad6d86c858b8fbfd5d331db3b26079d7128ccac41ce733328946a91cf6edd5b

(this sample)

  
Dropped by
SHA256 f54a8b51f2d6ed2953a1d9edb19da1c7e44a6e53bb610a24bc7195c6bdc18825
  
URLhaus
https://urlhaus.abuse.ch/url/3868014/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 972696694dbff568cf791aea1243bdb8

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