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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3
SHA3-384 hash: 703fc1897f9b9995ad6a40279a560a54a50dbc97ff1148eba6d53cd22afc89cfb40d0e8c70150d0527f8ab89560225bf
SHA1 hash: eac71328c90c3c9d0eecd2fcd0b840d531283d53
MD5 hash: 2844ddb0b662811e1e3f0b7f41f86d00
humanhash: failed-uncle-colorado-spring
File name:kworkerd-blkcg
Download: download sample
Signature CoinMiner
Create hunting rule
File size:104'988 bytes
First seen:2026-06-20 20:29:33 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:kioGWpBo3D4Guv2xqPYt+qhSZNUcbLGFBzfB:1s84GuvOqPwha/bLGnB
TLSH T157A3122181B8FE50D4FCAE7755CAD0C71F1FC3A0242A37721589AEF3694029A23DD9DA
telfhash t1349004034d4140f01134dc045cc51310f34510171c5f1017dc5c1d1f4477d755d11540
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf UPX
File size (compressed) :104'988 bytes
File size (de-compressed) :243'552 bytes
Format:linux/arm
Unpacked file: a32e7b6c1bab32642fa78f78d1891f8ba1ca8c4fa2bb382ea91350c9290a1107

Intelligence

File Origin
# of uploads :
1
# of downloads :
83
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Armada.1.29175.27067.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Changes the time when the file was created, accessed, or modified
Creating a file in the %temp% directory
Changes access rights for a written file
Sends data to a server
Collects information on the CPU
Receives data from a server
Sets a written file as executable
Opens a port
Connection attempt
Runs as daemon
Launching a process
Manages services
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Deleting of the original file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a36f8709799578a6c432552/reports/9928a11a-b25e-467a-be87-0a26f56d71ce/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/585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Clean
File Type:
elf.32.le
First seen:
2026-06-21T22:58:00Z UTC
Last seen:
2026-06-22T07:55:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/d3fc88e2-7dd0-4b1e-8606-9c4bf705d24f
Behavior Graph:
Download SVG
%3 guuid=6c889217-1f00-0000-9e03-6e82350e0000 pid=3637 /usr/bin/sudo guuid=52ed9c1a-1f00-0000-9e03-6e823d0e0000 pid=3645 /tmp/sample.bin guuid=6c889217-1f00-0000-9e03-6e82350e0000 pid=3637->guuid=52ed9c1a-1f00-0000-9e03-6e823d0e0000 pid=3645 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/abcba84d-7e34-4c05-b2af-d9901cb73c18
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1931375
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: 1931375 Sample: kworkerd-blkcg.elf Startdate: 20/06/2026 Architecture: LINUX Score: 76 57 api.robotmarkethub.com 2->57 59 91.239.211.89, 36032, 43466, 43470 HOSTKEY-ASNL Germany 2->59 61 4 other IPs or domains 2->61 65 Yara detected Xmrig cryptocurrency miner 2->65 10 kworkerd-blkcg.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 TXT record lookups 57->67 process4 signatures5 69 Found strings related to Crypto-Mining 10->69 19 kworkerd-blkcg.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-blkcg.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 75 Opens /sys/class/net/* files useful for querying network interface information 28->75 77 Sample deletes itself 28->77 79 Sample tries to persist itself using cron 28->79 32 kworkerd-blkcg.elf sh 28->32         started        35 kworkerd-blkcg.elf sh 28->35         started        37 kworkerd-blkcg.elf sh 28->37         started        39 kworkerd-blkcg.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.RRmmrR, ASCII 41->53 dropped 71 Sample tries to persist itself using cron 41->71 73 Executes the "crontab" command typically for achieving persistence 41->73 signatures15
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3/
Threat name:
Linux.Trojan.Qwexlafiba
Create hunting rule
Status:
Malicious
First seen:
2026-06-20 20:30:50 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=lbnveovxo37bllgs6wwxlrmn73cdnjbrdr53zftvrr4wrtfzvtrq._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-zagf2ahv3k/
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/585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3

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:enterpriseunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise UNIX
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 585b523ab776fe15acd2f5ad75c58dfec436a4311c7bbc96758c7968ccb9ace3

(this sample)

CoinMiner

elf a32e7b6c1bab32642fa78f78d1891f8ba1ca8c4fa2bb382ea91350c9290a1107

  
URLhaus
https://urlhaus.abuse.ch/url/3868018/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 a32e7b6c1bab32642fa78f78d1891f8ba1ca8c4fa2bb382ea91350c9290a1107
  
Dropping
MD5 0e30a8647ea9499eca8937826ba68949

Comments