MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59
SHA3-384 hash: 0519f8bc09a86bebea79a046a750e52f82769b374906e1d9300969af32bda9bc3beb7071ceb45ec7609458e54a71a8ef
SHA1 hash: 0d1855c459ba8d2f98bb402586c8eb30e9efc38c
MD5 hash: e84d622934fd4bde85a44e36628262da
humanhash: july-monkey-spring-hydrogen
File name:kworkerd-netns-rt
Download: download sample
Signature CoinMiner
Create hunting rule
File size:131'740 bytes
First seen:2026-06-25 14:34:16 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 3072:0a6NWG6ZF8v6MnHmqo/dIWJEkmJw+YEph+H5Wr9V1:0a9GgFk6jqeWWKu+VOZW31
TLSH T112D312DF5B174BB3C29937369BB04E813AB90B12CD1A1C05654DFD518E250E724B2EEA
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:CoinMiner elf UPX
File size (compressed) :131'740 bytes
File size (de-compressed) :332'844 bytes
Format:linux/mips
Unpacked file: cc75abb03271fb561de885e1295dfe6e677a89e625a8ea65763866980c92ac05

Intelligence

File Origin
# of uploads :
1
# of downloads :
59
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Connection attempt
Changes the time when the file was created, accessed, or modified
Changes access rights for a written file
Creating a file in the %temp% directory
Sends data to a server
Collects information on the CPU
Receives data from a server
Sets a written file as executable
Opens a port
Runs as daemon
Launching a process
Manages services
Substitutes an application name
Kills critical processes
Creates or modifies files in /cron to set up autorun
Deleting of the original file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6a3d3c77f286b0b6e710a8c0/reports/90d5bed5-54bb-4f3e-b8aa-4ecacc2e20bd/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
UPX
Botnet:
unknown
Number of open files:
1
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/43026748-ed2b-4085-9046-a6ae4db90f71
Behavior Graph:
Download SVG
%3 guuid=ff2c3478-1b00-0000-cb5f-6413280b0000 pid=2856 /usr/bin/sudo guuid=3f242c7a-1b00-0000-cb5f-64132e0b0000 pid=2862 /tmp/sample.bin guuid=ff2c3478-1b00-0000-cb5f-6413280b0000 pid=2856->guuid=3f242c7a-1b00-0000-cb5f-64132e0b0000 pid=2862 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2339b0e2-9a9d-474a-b1b2-8608c97f7bae
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1933780
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)
Writes identical ELF files to multiple locations
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1933780 Sample: kworkerd-netns-rt.elf Startdate: 25/06/2026 Architecture: LINUX Score: 100 104 api.robotmarkethub.com 2->104 106 91.239.211.89, 34892, 34894, 34912 HOSTKEY-ASNL Germany 2->106 112 Antivirus detection for dropped file 2->112 114 Yara detected Xmrig cryptocurrency miner 2->114 12 systemd sh 2->12         started        14 kworkerd-netns-rt.elf 2->14         started        17 systemd snapd-env-generator 2->17         started        19 systemd snapd-env-generator 2->19         started        signatures3 116 Performs DNS TXT record lookups 104->116 process4 signatures5 21 sh sh 12->21         started        24 sh wget 12->24         started        26 sh rm 12->26         started        136 Found strings related to Crypto-Mining 14->136 28 kworkerd-netns-rt.elf 14->28         started        process6 file7 92 /tmp/.exectest.5473, POSIX 21->92 dropped 94 /dev/shm/.exectest.5473, POSIX 21->94 dropped 30 sh .d 21->30         started        32 sh .d 21->32         started        34 sh wget 21->34         started        40 53 other processes 21->40 96 /tmp/..redis-sentinel, POSIX 24->96 dropped 38 kworkerd-netns-rt.elf 28->38         started        process8 file9 42 .d 30->42         started        44 .d 32->44         started        88 /dev/shm/.d, ELF 34->88 dropped 118 Writes identical ELF files to multiple locations 34->118 120 Drops invisible ELF files 34->120 46 kworkerd-netns-rt.elf sh 38->46         started        48 kworkerd-netns-rt.elf sh 38->48         started        90 /tmp/.d, ELF 40->90 dropped 122 Searches for CPU information (likely indicative of DDoS capability) 40->122 124 Sample deletes itself 40->124 126 Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens 40->126 50 sh nc 40->50         started        53 sh nc 40->53         started        55 sh grep 40->55         started        57 2 other processes 40->57 signatures10 process11 signatures12 59 .d 42->59         started        63 .d 44->63         started        65 sh systemctl 46->65         started        67 sh systemctl 48->67         started        108 Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens 50->108 110 Searches for CPU information (likely indicative of DDoS capability) 55->110 process13 file14 98 /var/spool/cron/crontabs/root, ASCII 59->98 dropped 130 Opens /sys/class/net/* files useful for querying network interface information 59->130 132 Sample deletes itself 59->132 134 Sample tries to persist itself using cron 59->134 69 .d sh 59->69         started        72 .d sh 59->72         started        74 .d sh 63->74         started        76 .d sh 63->76         started        signatures15 process16 signatures17 78 sh crontab 69->78         started        82 sh crontab 72->82         started        128 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 74->128 84 sh crontab 74->84         started        86 sh crontab 76->86         started        process18 file19 100 /var/spool/cron/crontabs/tmp.53JM3Q, ASCII 78->100 dropped 102 /var/spool/cron/crontabs/tmp.LLz96I, ASCII 84->102 dropped 138 Sample tries to persist itself using cron 84->138 140 Executes the "crontab" command typically for achieving persistence 84->140 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=joq7f4oohjtbms4zawpzgevd7o5nzwf2gn7a5fpodw3pbxd2fjmq._file
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/4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59

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

File information

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

Web download

CoinMiner

elf 4ba1f2f1ce3a66164b99059f9312a3fbbadcd8ba337e0e95ee1db6f0dc7a2a59

(this sample)

CoinMiner

elf cc75abb03271fb561de885e1295dfe6e677a89e625a8ea65763866980c92ac05

  
URLhaus
https://urlhaus.abuse.ch/url/3868015/
  
Delivery method
Distributed via web download
  
Dropping
SHA256 cc75abb03271fb561de885e1295dfe6e677a89e625a8ea65763866980c92ac05
  
Dropping
MD5 619588f5ad6700c29bf02297921e69ae

Comments