MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1
SHA3-384 hash: 273a40c070dcce1a30699212e186a09c5d1d261f894923ecb7360d6ab26d001494c0e059db1af86befb5501c29f2dced
SHA1 hash: d7f20ac3201e2b61bc9874fc92d9b08cb75f5945
MD5 hash: 4b789152b989ee1adc568c23bc6fb165
humanhash: river-bacon-grey-william
File name:kworkerd-irq
Download: download sample
Signature CoinMiner
Create hunting rule
File size:235'336 bytes
First seen:2026-06-25 15:33:41 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:D5Swzrlndga/kY0N/r7dv9Gryw5JVeiB2D0IZ2Q:vzVqa/kY0N/r7dy5DkBf
TLSH T1973429A5BC80DB66C6E427BAFB5D429933134F74C3DD3105CD245F2936EB95B0A3A282
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 681d9f63c25b3d85187b2701b0b66969e34562ee66ef2467ef22e30aae9e25ac
File size (compressed) :101'968 bytes
File size (de-compressed) :235'336 bytes
Format:linux/arm
Packed file: 681d9f63c25b3d85187b2701b0b66969e34562ee66ef2467ef22e30aae9e25ac

Intelligence

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

Behaviour
Runs as daemon
Sends data to a server
Manages services
Sets a written file as executable
Creating a file in the %temp% directory
Receives data from a server
Connection attempt
Launching a process
Creating a file
Collects information on the CPU
Changes the time when the file was created, accessed, or modified
Opens a port
Changes access rights for a written file
DNS request
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Creates or modifies files in /init.d to set up autorun
Deleting of the original file
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
base64 expand gcc lolbin rust
Link:
https://www.filescan.io/uploads/6a3d4a81c239cbaf1662d670/reports/590baf75-769f-4f1c-bb42-582e561c0373/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
arm
Packer:
UPX
Botnet:
unknown
Number of open files:
0
Number of processes launched:
0
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1
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/90e739cb-d294-4bef-8665-f7c7ad4d7397
Behavior Graph:
Download SVG
%3 guuid=5e1fb86f-1900-0000-cbec-0dcca00e0000 pid=3744 /usr/bin/sudo guuid=50219271-1900-0000-cbec-0dcca80e0000 pid=3752 /tmp/sample.bin guuid=5e1fb86f-1900-0000-cbec-0dcca00e0000 pid=3744->guuid=50219271-1900-0000-cbec-0dcca80e0000 pid=3752 execve
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/ea64d8de-742d-451b-b979-44d9823f80ec
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1933802
Signature
Antivirus / Scanner detection for submitted sample
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: 1933802 Sample: kworkerd-irq.elf Startdate: 25/06/2026 Architecture: LINUX Score: 100 80 api.robotmarkethub.com 2->80 82 91.239.211.89, 36062, 36064, 43500 HOSTKEY-ASNL Germany 2->82 84 4 other IPs or domains 2->84 98 Antivirus detection for dropped file 2->98 100 Antivirus / Scanner detection for submitted sample 2->100 102 Yara detected Xmrig cryptocurrency miner 2->102 12 systemd sh 2->12         started        14 kworkerd-irq.elf 2->14         started        17 systemd snapd-env-generator 2->17         started        19 3 other processes 2->19 signatures3 104 Performs DNS TXT record lookups 80->104 process4 signatures5 21 sh sh 12->21         started        24 sh wget 12->24         started        26 sh rm 12->26         started        116 Found strings related to Crypto-Mining 14->116 28 kworkerd-irq.elf 14->28         started        process6 file7 76 /dev/shm/.exectest.6288, POSIX 21->76 dropped 30 sh .d 21->30         started        32 sh wget 21->32         started        36 sh 21->36         started        40 28 other processes 21->40 78 /tmp/..redis-sentinel, POSIX 24->78 dropped 38 kworkerd-irq.elf 28->38         started        process8 file9 42 .d 30->42         started        70 /dev/shm/.d, ELF 32->70 dropped 86 Drops invisible ELF files 32->86 44 sh grep 36->44         started        47 kworkerd-irq.elf sh 38->47         started        49 kworkerd-irq.elf sh 38->49         started        88 Searches for CPU information (likely indicative of DDoS capability) 40->88 90 Sample deletes itself 40->90 92 Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens 40->92 signatures10 process11 signatures12 51 .d 42->51         started        114 Searches for CPU information (likely indicative of DDoS capability) 44->114 55 sh systemctl 47->55         started        57 sh systemctl 49->57         started        process13 file14 74 /var/spool/cron/crontabs/root, ASCII 51->74 dropped 106 Opens /sys/class/net/* files useful for querying network interface information 51->106 108 Sample deletes itself 51->108 110 Sample tries to persist itself using cron 51->110 59 .d sh 51->59         started        62 .d sh 51->62         started        signatures15 process16 signatures17 112 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 59->112 64 sh crontab 59->64         started        68 sh crontab 62->68         started        process18 file19 72 /var/spool/cron/crontabs/tmp.CLnMs5, ASCII 64->72 dropped 94 Sample tries to persist itself using cron 64->94 96 Executes the "crontab" command typically for achieving persistence 64->96 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1/
Gathering data
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7otvyrpb7jc2eybuspzwaj7rslx52gbih5noduj54oos2ohqslaq._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/fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1

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: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

CoinMiner

elf 681d9f63c25b3d85187b2701b0b66969e34562ee66ef2467ef22e30aae9e25ac

CoinMiner

elf fba75c45e1fa45a2603493f36027f192efdd18283f5ae1d13de39d2d38f092c1

(this sample)

  
Dropped by
SHA256 681d9f63c25b3d85187b2701b0b66969e34562ee66ef2467ef22e30aae9e25ac
  
URLhaus
https://urlhaus.abuse.ch/url/3868014/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 063495b093df9416fa92bc25058ac810

Comments