MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72. 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


Threat unknown


Vendor detections: 5


Intelligence 5 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72
SHA3-384 hash: ac0c2fc6ccb3373901a25e04bea483f37f7c25f72de3351f5652996d4d290d515d713346ae805e368de6742d949ba297
SHA1 hash: d3f5b54eff1bd919ff8a0f9302654f60b3e93397
MD5 hash: 343b787242cb0665446b7cb799f95eb2
humanhash: berlin-apart-mirror-neptune
File name:kworkerd-events
Download: download sample
File size:251'324 bytes
First seen:2026-06-21 15:03:35 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:pBUz1Bz+/uL1uJfjXQ6WB/QNSOF6ZQFN2H0sUOzROw/MjR:+1Z4uL1afjXcBqBF60gH/BzROnR
TLSH T171345B06F652E4F0F5A61931028EC37A5A70ED344162D997FF4B3EB0EC75606AE1A72C
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter abuse_ch
Tags:elf

Intelligence

File Origin
# of uploads :
1
# of downloads :
53
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Deleting a recently created file
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:
  0/10
Confidence:
100%
Tags:
base64 gcc rust
Link:
https://www.filescan.io/uploads/6a37fd7962d0679105fa9743/reports/efe74b4f-085e-4ccf-8d45-5b0c9baad62b/overview
Verdict:
Unknown
File Type:
Elf
First seen:
2026-06-21T09:50:00Z UTC
Last seen:
2026-06-21T09:50:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/f68da749-326c-40b9-8969-ba28874a397a
Behavior Graph:
Download SVG
%3 guuid=75162362-1900-0000-8714-4d322b0e0000 pid=3627 /usr/bin/sudo guuid=671bf064-1900-0000-8714-4d32350e0000 pid=3637 /tmp/sample.bin guuid=75162362-1900-0000-8714-4d322b0e0000 pid=3627->guuid=671bf064-1900-0000-8714-4d32350e0000 pid=3637 execve guuid=b4bbd265-1900-0000-8714-4d32380e0000 pid=3640 /tmp/sample.bin guuid=671bf064-1900-0000-8714-4d32350e0000 pid=3637->guuid=b4bbd265-1900-0000-8714-4d32380e0000 pid=3640 clone guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641 /tmp/sample.bin delete-file net send-data write-config write-file zombie guuid=b4bbd265-1900-0000-8714-4d32380e0000 pid=3640->guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641 clone ffee5cfb-bb94-52c2-8935-ae3a87e774db 127.0.0.1:42780 guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->ffee5cfb-bb94-52c2-8935-ae3a87e774db con 0a8043c9-917f-591f-8444-89639bba3210 91.239.211.89:8000 guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->0a8043c9-917f-591f-8444-89639bba3210 send: 383B 54d92a3b-1447-55af-b534-047898c60c8d 1.1.1.1:53 guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->54d92a3b-1447-55af-b534-047898c60c8d send: 80B guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3643 /tmp/sample.bin guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3643 clone guuid=10839067-1900-0000-8714-4d32450e0000 pid=3653 /usr/bin/dash guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=10839067-1900-0000-8714-4d32450e0000 pid=3653 execve guuid=ed32b394-1900-0000-8714-4d32110f0000 pid=3857 /usr/bin/dash guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=ed32b394-1900-0000-8714-4d32110f0000 pid=3857 execve guuid=efa9bbd0-1900-0000-8714-4d32e50f0000 pid=4069 /usr/bin/dash guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=efa9bbd0-1900-0000-8714-4d32e50f0000 pid=4069 execve guuid=d904f2d0-1900-0000-8714-4d32e70f0000 pid=4071 /usr/bin/dash guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=d904f2d0-1900-0000-8714-4d32e70f0000 pid=4071 execve guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=4075 /tmp/sample.bin guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=3641->guuid=5bc5da65-1900-0000-8714-4d32390e0000 pid=4075 clone guuid=c596bb67-1900-0000-8714-4d32460e0000 pid=3654 /usr/bin/systemctl guuid=10839067-1900-0000-8714-4d32450e0000 pid=3653->guuid=c596bb67-1900-0000-8714-4d32460e0000 pid=3654 execve guuid=624cd594-1900-0000-8714-4d32130f0000 pid=3859 /usr/bin/systemctl guuid=ed32b394-1900-0000-8714-4d32110f0000 pid=3857->guuid=624cd594-1900-0000-8714-4d32130f0000 pid=3859 execve guuid=be31ded0-1900-0000-8714-4d32e60f0000 pid=4070 /usr/bin/dash guuid=efa9bbd0-1900-0000-8714-4d32e50f0000 pid=4069->guuid=be31ded0-1900-0000-8714-4d32e60f0000 pid=4070 clone guuid=928617d1-1900-0000-8714-4d32e80f0000 pid=4072 /usr/bin/dash guuid=d904f2d0-1900-0000-8714-4d32e70f0000 pid=4071->guuid=928617d1-1900-0000-8714-4d32e80f0000 pid=4072 clone
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/f74c7dfe-11cb-48dd-97ca-ceea8b10558e
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1931496
Signature
Antivirus / Scanner detection for submitted sample
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: 1931496 Sample: kworkerd-events.elf Startdate: 21/06/2026 Architecture: LINUX Score: 84 57 api.robotmarkethub.com 2->57 59 91.239.211.89, 34892, 37688, 80 HOSTKEY-ASNL Germany 2->59 63 Antivirus / Scanner detection for submitted sample 2->63 65 Yara detected Xmrig cryptocurrency miner 2->65 10 kworkerd-events.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 67 Performs DNS TXT record lookups 57->67 process4 signatures5 69 Found strings related to Crypto-Mining 10->69 19 kworkerd-events.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-events.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-events.elf sh 28->32         started        35 kworkerd-events.elf sh 28->35         started        37 kworkerd-events.elf sh 28->37         started        39 kworkerd-events.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.S0f9AD, 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/d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2o5vncgg45v6ruaq7dwqfljxjnnah2t5cmhqgxjsvpkpw2u3vvza._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
antivm defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/260621-sft6raew9v/
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.

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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

elf d3bb5688c6e76be8d010f8ed02ad374b5a03ea7d130f035d32abd4fb6a9bad72

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3868017/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3868023/

Comments