MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 61dda033ee6a52ace288049c4d5be53959a5dcd0467dcd4286f3c8203ff984a4. 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


Threat unknown


Vendor detections: 5


Intelligence 5 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 61dda033ee6a52ace288049c4d5be53959a5dcd0467dcd4286f3c8203ff984a4
SHA3-384 hash: 05e5fc529f4b4a5c4eef67d08e43cb89bce16d237ae1cace1147db1d9a12e83ca26a4c0e2069312c07a9dd56c40764a3
SHA1 hash: ecc766f5c9a1c5f9f781fd1955b58e012a3129de
MD5 hash: 01942cdc6b2032dbe91a5fda4072d575
humanhash: golf-east-fillet-lithium
File name:kworkerd-irq
Download: download sample
File size:106'952 bytes
First seen:2026-06-20 21:27:43 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:8cujVe+UpCQQ9toPuFvZGdIzFLXYTAkan+TnTl:8Ve+UpCQQWumMFLXmAkanYx
TLSH T1BCA3123253222C21C124247E4D8916E5872C7B6A7CEB3A830796591AC7E71CF29FFE5D
Magika elf
Reporter abuse_ch
Tags:elf UPX
File size (compressed) :106'952 bytes
File size (de-compressed) :247'644 bytes
Format:linux/arm
Unpacked file: d41fd9018d83a1275535f8cbe0ee0b8cbfe440eeb0d9a29bc24a75643cf0a102

Intelligence

File Origin
# of uploads :
1
# of downloads :
56
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Connection attempt
Changes the time when the file was created, accessed, or modified
Changes access rights for a written file
Creating a file in the %temp% directory
Sends data to a server
Collects information on the CPU
Receives data from a server
Sets a written file as executable
Opens a port
Runs as daemon
Launching a process
Manages services
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Deleting of the original file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a3705f99799578a6c432a9e/reports/18ed852f-2ea8-400e-8cf3-c5b6ab80004f/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/2ff31aff-7d87-4f36-8288-0fc1c2e0ffc2
Behavior Graph:
Download SVG
%3 guuid=fa1ff2f1-1800-0000-bc6e-c0df24140000 pid=5156 /usr/bin/sudo guuid=944e9bf3-1800-0000-bc6e-c0df25140000 pid=5157 /tmp/sample.bin guuid=fa1ff2f1-1800-0000-bc6e-c0df24140000 pid=5156->guuid=944e9bf3-1800-0000-bc6e-c0df25140000 pid=5157 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/02120508-0560-4bb2-b151-ddecab2dd296
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1931397
Signature
Executes itself again with its parent PID as an argument (indicative of hampering debugging)
Executes the "crontab" command typically for achieving persistence
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
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1931397 Sample: kworkerd-irq.elf Startdate: 20/06/2026 Architecture: LINUX Score: 76 57 api.robotmarkethub.com 2->57 59 91.239.211.89, 34892, 37688, 37690 HOSTKEY-ASNL Germany 2->59 63 Yara detected Xmrig cryptocurrency miner 2->63 10 kworkerd-irq.elf 2->10         started        13 systemd sh 2->13         started        15 systemd snapd-env-generator 2->15         started        17 systemd snapd-env-generator 2->17         started        signatures3 65 Performs DNS TXT record lookups 57->65 process4 signatures5 67 Found strings related to Crypto-Mining 10->67 19 kworkerd-irq.elf 10->19         started        21 sh wget 13->21         started        24 sh sh 13->24         started        26 sh rm 13->26         started        process6 file7 28 kworkerd-irq.elf 19->28         started        51 /tmp/..redis-sentinel, Bourne-Again 21->51 dropped process8 file9 55 /var/spool/cron/crontabs/root, ASCII 28->55 dropped 73 Opens /sys/class/net/* files useful for querying network interface information 28->73 75 Sample deletes itself 28->75 77 Sample tries to persist itself using cron 28->77 32 kworkerd-irq.elf sh 28->32         started        35 kworkerd-irq.elf sh 28->35         started        37 kworkerd-irq.elf sh 28->37         started        39 kworkerd-irq.elf sh 28->39         started        signatures10 process11 signatures12 61 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 32->61 41 sh crontab 32->41         started        45 sh crontab 35->45         started        47 sh systemctl 37->47         started        49 sh systemctl 39->49         started        process13 file14 53 /var/spool/cron/crontabs/tmp.GaEvur, ASCII 41->53 dropped 69 Sample tries to persist itself using cron 41->69 71 Executes the "crontab" command typically for achieving persistence 41->71 signatures15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/61dda033ee6a52ace288049c4d5be53959a5dcd0467dcd4286f3c8203ff984a4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/61dda033ee6a52ace288049c4d5be53959a5dcd0467dcd4286f3c8203ff984a4/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mho2am7onjjkzyuiasoe2w7fhfm2lxgqiz642qug6pecap7zqssa._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
antivm defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260620-1bjhfshy2n/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Writes file to tmp directory
Changes its process name
Checks CPU configuration
Reads system network configuration
Creates/modifies Cron job
Enumerates active TCP sockets
Enumerates running processes
Modifies systemd
Reads MAC address of network interface
Deletes itself
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:elf_arm_mips_ko_so
Create hunting rule
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

elf 61dda033ee6a52ace288049c4d5be53959a5dcd0467dcd4286f3c8203ff984a4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3868014/
  
Delivery method
Distributed via web download

Comments