MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd
SHA3-384 hash: 32b683a4ec264dc0db1b8fefaeaf7d6db02ea3322623107874202e0bc648182d6247a07c107220e0a40b697626f79b13
SHA1 hash: c8efb24eae4cd482886f0c81e1ad110647a44de7
MD5 hash: eda8b66cfe7971b27e97921928a1793d
humanhash: bravo-burger-michigan-echo
File name:kworkerd-irq-bal
Download: download sample
Signature CoinMiner
Create hunting rule
File size:107'268 bytes
First seen:2026-06-21 14:47:35 UTC
Last seen:2026-06-22 08:57:39 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:fq7F1/ZsLvWqXlPkcKRdXw3RXGzRmoy6z0OzYJdzV:fqp1CLvWqXlccKbXw35Mmm0OzYZ
TLSH T122A302527D4DDC14D4902D726E4FA70C02A1AEF8E22D3E196A07E6307ADCD196974ABC
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf UPX
File size (compressed) :107'268 bytes
File size (de-compressed) :247'644 bytes
Format:linux/arm
Unpacked file: c7709ac88c8be581a74510700227c2783acd350780b2e626946ea88d10bf3e73

Intelligence

File Origin
# of uploads :
4
# of downloads :
63
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Armada.1.20838.23090.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Manages services
Deleting a recently created file
Collects information on the CPU
Sets a written file as executable
Receives data from a server
Connection attempt
DNS request
Runs as daemon
Creating a file in the %temp% directory
Launching a process
Opens a port
Sends data to a server
Creating a file
Changes the time when the file was created, accessed, or modified
Changes access rights for a written file
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Deleting of the original file
Creates or modifies files in /init.d to set up autorun
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a37f9ba90632a45f73066cb/reports/a7381c9d-3a40-45d2-b322-60c060d861df/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/745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Unknown
File Type:
elf.32.le
First seen:
2026-06-21T14:04:00Z UTC
Last seen:
2026-06-22T23:48:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/da7b7fa1-c8ca-425f-a2a5-47a2f96c9c3f
Behavior Graph:
Download SVG
%3 guuid=81fc2adc-1900-0000-e775-5583ed0c0000 pid=3309 /usr/bin/sudo guuid=a5ae92de-1900-0000-e775-5583f10c0000 pid=3313 /tmp/sample.bin guuid=81fc2adc-1900-0000-e775-5583ed0c0000 pid=3309->guuid=a5ae92de-1900-0000-e775-5583f10c0000 pid=3313 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/cf4e6d72-4bfa-46e1-a864-c8c56d67489d
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1931494
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: 1931494 Sample: kworkerd-irq-bal.elf Startdate: 21/06/2026 Architecture: LINUX Score: 76 57 api.robotmarkethub.com 2->57 59 91.239.211.89, 47266, 60178, 80 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.4qqM9h, 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/745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd/
Threat name:
Linux.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2026-06-21 14:48:38 UTC
File Type:
ELF32 Little (SO)
AV detection:
6 of 23 (26.09%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=orns2pgsfh7cdcuinhuacah6mdaw5tdyrruknuetvbrjdrr2ydgq._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-r6nk8adx4p/
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.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd

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 745b2d3cd229fe218a8869e80100fe60c16ecc788c68a6d093a86291c63ac0cd

(this sample)

CoinMiner

elf c7709ac88c8be581a74510700227c2783acd350780b2e626946ea88d10bf3e73

  
URLhaus
https://urlhaus.abuse.ch/url/3868016/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 c7709ac88c8be581a74510700227c2783acd350780b2e626946ea88d10bf3e73
  
Dropping
MD5 c55b34c253384691890c935ef3f56482

Comments