MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 514cc4cf71cb5e9ee33579e22c66c10794b03f4adf50001de4e2866d281fd261. 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: 5


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

SHA256 hash: 514cc4cf71cb5e9ee33579e22c66c10794b03f4adf50001de4e2866d281fd261
SHA3-384 hash: 669b23328c0eaf79f5745ed007041bd23548a50e15d0acfa533f1534c397f98fd0f593a68e607a39edc1271f3e386baa
SHA1 hash: 9d3b2e7cb7a2f749a1ee8d20defa96fc66433464
MD5 hash: a1b0a27b61162d9951b8c8dfd1d37ef0
humanhash: juliet-september-seventeen-jersey
File name:kworkerd-blkcg
Download: download sample
Signature CoinMiner
Create hunting rule
File size:100'448 bytes
First seen:2026-06-25 18:13:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:1173MEmwT5+u2fCJBUoKdWqT3n2066W99MoGi:Dz++B7qh5oV
TLSH T1E0A3011CD0AC50FBE3C19439974AF364A94632F595B0B5F768898F706F1F45B09E80A7
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf UPX
File size (compressed) :100'448 bytes
File size (de-compressed) :231'244 bytes
Format:linux/arm
Unpacked file: e297203d6a4a85af9cce3140a8baecdb02a2c52789b5a3b8b6ca8708371bb39f

Intelligence

File Origin
# of uploads :
1
# of downloads :
50
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Sets a written file as executable
Creating a file in the %temp% directory
Manages services
Receives data from a server
Connection attempt
Launching a process
Creating a file
Opens a port
Changes access rights for a written file
DNS request
Substitutes an application name
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a3d700b365b598224b9b693/reports/95ffe093-7268-4fd5-8a4a-86394f52e117/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8fb36de8-c5e9-484b-93cc-8f11fcca0e6d
Behavior Graph:
Download SVG
%3 guuid=23e1f110-1f00-0000-fe3c-ccbe40140000 pid=5184 /usr/bin/sudo guuid=18421013-1f00-0000-fe3c-ccbe41140000 pid=5185 /tmp/sample.bin guuid=23e1f110-1f00-0000-fe3c-ccbe40140000 pid=5184->guuid=18421013-1f00-0000-fe3c-ccbe41140000 pid=5185 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/fb8076c8-35b4-4860-88be-2a76e452f409
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1933881
Signature
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: 1933881 Sample: kworkerd-blkcg.elf Startdate: 25/06/2026 Architecture: LINUX Score: 96 84 api.robotmarkethub.com 2->84 86 91.239.211.89, 37744, 39226, 39228 HOSTKEY-ASNL Germany 2->86 88 99 other IPs or domains 2->88 98 Antivirus detection for dropped file 2->98 100 Yara detected Xmrig cryptocurrency miner 2->100 12 systemd sh 2->12         started        14 kworkerd-blkcg.elf 2->14         started        17 systemd snapd-env-generator 2->17         started        19 systemd snapd-env-generator 2->19         started        signatures3 102 Performs DNS TXT record lookups 84->102 process4 signatures5 21 sh sh 12->21         started        24 sh wget 12->24         started        26 sh rm 12->26         started        118 Found strings related to Crypto-Mining 14->118 28 kworkerd-blkcg.elf 14->28         started        process6 file7 80 /dev/shm/.exectest.5581, 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-blkcg.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-blkcg.elf sh 38->47         started        49 kworkerd-blkcg.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        116 Searches for CPU information (likely indicative of DDoS capability) 44->116 55 sh systemctl 47->55         started        57 sh systemctl 49->57         started        process13 file14 76 /var/spool/cron/crontabs/root, ASCII 51->76 dropped 104 Opens /sys/class/net/* files useful for querying network interface information 51->104 106 Sample deletes itself 51->106 108 Sample tries to persist itself using cron 51->108 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 114 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 59->114 68 sh crontab 59->68         started        72 sh crontab 62->72         started        process18 file19 78 /var/spool/cron/crontabs/tmp.0Kg7aJ, ASCII 68->78 dropped 110 Sample tries to persist itself using cron 68->110 112 Executes the "crontab" command typically for achieving persistence 68->112 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/514cc4cf71cb5e9ee33579e22c66c10794b03f4adf50001de4e2866d281fd261
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/514cc4cf71cb5e9ee33579e22c66c10794b03f4adf50001de4e2866d281fd261/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kfgmjt3rznpj5yzvphrcyzwba6klap2k35iaahpe4kdg2ka72jqq._file
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 514cc4cf71cb5e9ee33579e22c66c10794b03f4adf50001de4e2866d281fd261

(this sample)

CoinMiner

elf e297203d6a4a85af9cce3140a8baecdb02a2c52789b5a3b8b6ca8708371bb39f

  
URLhaus
https://urlhaus.abuse.ch/url/3868018/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 e297203d6a4a85af9cce3140a8baecdb02a2c52789b5a3b8b6ca8708371bb39f
  
Dropping
MD5 d381c55b74f1679f0b8c1ceb39d11e6a

Comments