MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5
SHA3-384 hash: 38495a5bc8e886589caa26704167dc42c258cc35b0dbe43931d05152f86c67086fdf2695ed8911d3b4af99bdea73f6bc
SHA1 hash: 97bc1d26e325fae7e62b2c33bbbb26db1384f74b
MD5 hash: 4f8ef8ab36e030e2d9f18f09cc8a1263
humanhash: red-green-coffee-autumn
File name:kworkerd-softirq
Download: download sample
Signature CoinMiner
Create hunting rule
File size:105'272 bytes
First seen:2026-06-21 15:37:36 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 1536:0B7rDL/AOIwCkeUf8wwxSiheJ78HmYA2B6ihD8RG0sZz69Zv2sMwGMI51Oi/iJ4O:0RL/AoeL56JPOspw0QE2fJMDJSL3l69
TLSH T19CA312A5E6D95E66E870207EED5940167BDF23BDF839B103290958DCEE327C4732C621
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf UPX
File size (compressed) :105'272 bytes
File size (de-compressed) :243'552 bytes
Format:linux/arm
Unpacked file: 6e0593be7fe7b6a0789e78610de47a3c76c49bf39e66feaeb6c3169390bc1b91

Intelligence

File Origin
# of uploads :
1
# of downloads :
59
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
Deleting of the original file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a3805729de4cf364c0fe8d8/reports/62c5829b-3e87-4555-ab00-85eea615f6ef/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
1
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/4263be63-f2be-484d-bd9f-c458e318aa30
Behavior Graph:
Download SVG
%3 guuid=86f87664-1900-0000-9ea0-85552e140000 pid=5166 /usr/bin/sudo guuid=d7671467-1900-0000-9ea0-85552f140000 pid=5167 /tmp/sample.bin guuid=86f87664-1900-0000-9ea0-85552e140000 pid=5166->guuid=d7671467-1900-0000-9ea0-85552f140000 pid=5167 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/ccbd830d-9a93-42dc-b75c-1bc93fcb6877
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1931503
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 queries to domains with low reputation
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: 1931503 Sample: kworkerd-softirq.elf Startdate: 21/06/2026 Architecture: LINUX Score: 80 57 tfmbikiovarolmyt.xyz 2->57 59 api.robotmarkethub.com 2->59 61 5 other IPs or domains 2->61 65 Yara detected Xmrig cryptocurrency miner 2->65 10 kworkerd-softirq.elf 2->10         started        13 systemd sh 2->13         started        15 systemd snapd-env-generator 2->15         started        17 3 other processes 2->17 signatures3 67 Performs DNS queries to domains with low reputation 57->67 69 Performs DNS TXT record lookups 59->69 process4 signatures5 71 Found strings related to Crypto-Mining 10->71 19 kworkerd-softirq.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-softirq.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 77 Opens /sys/class/net/* files useful for querying network interface information 28->77 79 Sample deletes itself 28->79 81 Sample tries to persist itself using cron 28->81 32 kworkerd-softirq.elf sh 28->32         started        35 kworkerd-softirq.elf sh 28->35         started        37 kworkerd-softirq.elf sh 28->37         started        39 kworkerd-softirq.elf sh 28->39         started        signatures10 process11 signatures12 63 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 32->63 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.bACIJ4, ASCII 41->53 dropped 73 Sample tries to persist itself using cron 41->73 75 Executes the "crontab" command typically for achieving persistence 41->75 signatures15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=awsrhargzg6nueypsxquwnwaqp5u4ctuk6qgi72oxix2cr75hp2q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
antivm defense_evasion discovery execution persistence privilege_escalation upx
Link:
https://tria.ge/reports/260621-s287ssdz3n/
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

CoinMiner

elf 05a5138226c9bcda130f95e14b36c083fb4e0a7457a0647f4eba2fa147fd3bf5

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3868022/
  
Delivery method
Distributed via web download

Comments