MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ae5db9eb1406557f12e2d9b474b2519beba3b6fc6afdb8ded74f41d258ae82cd. 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 1 File information Comments

SHA256 hash: ae5db9eb1406557f12e2d9b474b2519beba3b6fc6afdb8ded74f41d258ae82cd
SHA3-384 hash: cdfffa4bfedbffd0301d4776bed9b3d373d4749a60a76acc5c3420087af9bd64a7da027eb3944f8e9fb015f19629cd43
SHA1 hash: 2a5860757ce73860559de452e5e9f47b1a3a0867
MD5 hash: 7f2028446e827cbb89976b00df5cff7c
humanhash: network-monkey-whiskey-potato
File name:kworkerd-rcu
Download: download sample
Signature CoinMiner
File size:140'052 bytes
First seen:2026-06-20 21:11:41 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:PxjzrStHLrAb7hNbAGy6H6FTmRKdi1uywyDR1:5jMHHg6G1aF0KdcuSz
TLSH T1D0D312ACE813BD0CED1B07F3E996164B5583D49755758EA2C7228610A6F8E4EA4FC02E
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf UPX
File size (compressed) :140'052 bytes
File size (de-compressed) :351'800 bytes
Format:linux/mipsel
Unpacked file: 691c25e6addecd537d5948e809346235694f18621322f847299f464c35613615

Intelligence


File Origin
# of uploads :
1
# of downloads :
60
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Opens a port
Collects information on the CPU
Creating a file in the %temp% directory
Changes access rights for a written file
Creating a file
Sends data to a server
Connection attempt
Receives data from a server
Runs as daemon
Sets a written file as executable
Deleting a recently created file
Launching a process
Changes the time when the file was created, accessed, or modified
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:
  0/10
Confidence:
100%
Tags:
packed upx
Verdict:
Malicious
File Type:
elf.32.le
First seen:
2026-06-20T20:40:00Z UTC
Last seen:
2026-06-21T01:58:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
%3 guuid=bca2180e-1f00-0000-454c-769040140000 pid=5184 /usr/bin/sudo guuid=778a3010-1f00-0000-454c-769041140000 pid=5185 /tmp/sample.bin guuid=bca2180e-1f00-0000-454c-769040140000 pid=5184->guuid=778a3010-1f00-0000-454c-769041140000 pid=5185 execve
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
76 / 100
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1931394 Sample: kworkerd-rcu.elf Startdate: 20/06/2026 Architecture: LINUX Score: 76 57 api.robotmarkethub.com 2->57 59 91.239.211.89, 36042, 43476, 43478 HOSTKEY-ASNL Germany 2->59 61 4 other IPs or domains 2->61 65 Yara detected Xmrig cryptocurrency miner 2->65 10 kworkerd-rcu.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-rcu.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-rcu.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-rcu.elf sh 28->32         started        35 kworkerd-rcu.elf sh 28->35         started        37 kworkerd-rcu.elf sh 28->37         started        39 kworkerd-rcu.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.0Gx3qX, 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
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery upx
Behaviour
Reads runtime system information
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

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

CoinMiner

elf ae5db9eb1406557f12e2d9b474b2519beba3b6fc6afdb8ded74f41d258ae82cd

(this sample)

  
Delivery method
Distributed via web download

Comments