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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140. 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: f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140
SHA3-384 hash: c63a44625ab7334fd993a94bc5e81e914188abe6b4c8fff7c5fad8d450bcad2d1bb1bb1266429f07b641b7fb87926178
SHA1 hash: 88771e27c46608545bd3fb6b091bc74d0f6c5789
MD5 hash: 218e81a644c5b44c5206499baf86ff55
humanhash: yellow-undress-uniform-juliet
File name:kworkerd-irq-bal
Download: download sample
Signature CoinMiner
Create hunting rule
File size:106'952 bytes
First seen:2026-06-20 20:49:34 UTC
Last seen:2026-06-21 03:22:37 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:8cujVe+UpCQQ9toPuFvZGdIzFLXYTAkan+TnTW:8Ve+UpCQQWumMFLXmAkanYa
TLSH T1F6A3123253222C21C124247E4D8916E5872C7B6A7CEB3A830796491AC7E71CF29FFE5D
Magika elf
Reporter abuse_ch
Tags:CoinMiner 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 :
2
# of downloads :
87
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Armada.1.22097.12725.UNOFFICIAL
Create hunting rule

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/6a36fd2890632a45f72ee9cb/reports/41598554-0ea5-498d-8bbe-006e4b60e16f/overview
Verdict:
Clean
File Type:
elf.32.le
First seen:
2026-06-21T01:58:00Z UTC
Last seen:
2026-06-22T08:00:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/6cfc29f3-8a3e-46de-8136-1f3065e0a3b5
Behavior Graph:
Download SVG
%3 guuid=a33fe2bf-1a00-0000-d013-81abf2090000 pid=2546 /usr/bin/sudo guuid=c0fe37c2-1a00-0000-d013-81abfa090000 pid=2554 /tmp/sample.bin guuid=a33fe2bf-1a00-0000-d013-81abf2090000 pid=2546->guuid=c0fe37c2-1a00-0000-d013-81abfa090000 pid=2554 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/0a17de98-7c4f-4e87-837f-f0f40bc93f0c
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1931388
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: 1931388 Sample: kworkerd-irq-bal.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-bal.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-bal.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-bal.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-bal.elf sh 28->32         started        35 kworkerd-irq-bal.elf sh 28->35         started        37 kworkerd-irq-bal.elf sh 28->37         started        39 kworkerd-irq-bal.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.E9ePth, 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/f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140/
Threat name:
Linux.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-06-20 20:50:56 UTC
File Type:
ELF32 Little (SO)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7h4fm6vkqb4ygcl55nfx7mjqzqrxjlhb7meknkbfgjgyslyryfaa._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery upx
Link:
https://tria.ge/reports/260620-zmzs5shw6k/
Behaviour
Reads runtime system information
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/f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140

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 f9f8567aaa807983097deb4b7fb130cc2374ace1fb08a6a825324d892f11c140

(this sample)

CoinMiner

elf d41fd9018d83a1275535f8cbe0ee0b8cbfe440eeb0d9a29bc24a75643cf0a102

  
URLhaus
https://urlhaus.abuse.ch/url/3868016/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 d41fd9018d83a1275535f8cbe0ee0b8cbfe440eeb0d9a29bc24a75643cf0a102
  
Dropping
MD5 45a5f8b3e999bc4953e29c84f1c6fd05

Comments