MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca
SHA3-384 hash: 07c25c09cd6bb4ebd6b31e999a0bc0b009bc40e11efa82fb63e6750602f65ed708d022fc65c2dcd25647917aee0ac66c
SHA1 hash: 25d26aa4f781883101bfcc02b5cac40d8b364740
MD5 hash: d73740325c106a3f146f3427dba647d1
humanhash: fourteen-bulldog-magnesium-thirteen
File name:kworkerd-irq
Download: download sample
Signature CoinMiner
Create hunting rule
File size:235'336 bytes
First seen:2026-06-26 07:17:38 UTC
Last seen:2026-06-26 08:12:33 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 6144:u2S8MtFP5jZ+mPnCpyAWUr2xnMew7ou1VbY3Ed0UZO:NMt3jIynYdWUr2xFunjVO
TLSH T1453418A9BC40DB66C6E427BAFB4D429933134F74C3DD3509C9241F2936FB95B0A3A582
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 8039da31a8e91d0830858edf53738592f499e24612cebb172cca018ee14382b0
File size (compressed) :101'988 bytes
File size (de-compressed) :235'336 bytes
Format:linux/arm
Packed file: 8039da31a8e91d0830858edf53738592f499e24612cebb172cca018ee14382b0

Intelligence

File Origin
# of uploads :
2
# of downloads :
79
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.BackDoor.Armada.1.8046.18505.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
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/6a3e27c5f7ce7c4af8d52684/reports/710cb2f3-c926-4d31-8c8f-d34fdee04087/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/62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Unknown
File Type:
elf.32.le
First seen:
2026-06-27T20:09:00Z UTC
Last seen:
2026-06-27T21:40:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/1cc92da6-0bd2-411a-bb3d-dc3370c7e1a8
Behavior Graph:
Download SVG
%3 guuid=789ef550-1900-0000-cf3e-586b35140000 pid=5173 /usr/bin/sudo guuid=43368753-1900-0000-cf3e-586b36140000 pid=5174 /tmp/sample.bin guuid=789ef550-1900-0000-cf3e-586b35140000 pid=5173->guuid=43368753-1900-0000-cf3e-586b36140000 pid=5174 execve
Gathering data
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1934070
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: 1934070 Sample: kworkerd-irq.elf Startdate: 26/06/2026 Architecture: LINUX Score: 100 80 api.robotmarkethub.com 2->80 82 91.239.211.89, 47280, 60188, 60190 HOSTKEY-ASNL Germany 2->82 96 Antivirus detection for dropped file 2->96 98 Antivirus / Scanner detection for submitted sample 2->98 100 Yara detected Xmrig cryptocurrency miner 2->100 12 systemd sh 2->12         started        14 kworkerd-irq.elf 2->14         started        17 systemd snapd-env-generator 2->17         started        19 systemd snapd-env-generator 2->19         started        signatures3 102 Performs DNS TXT record lookups 80->102 process4 signatures5 21 sh sh 12->21         started        24 sh wget 12->24         started        26 sh rm 12->26         started        114 Found strings related to Crypto-Mining 14->114 28 kworkerd-irq.elf 14->28         started        process6 file7 76 /dev/shm/.exectest.5572, 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 84 Drops invisible ELF files 32->84 44 sh grep 36->44         started        47 kworkerd-irq.elf sh 38->47         started        49 kworkerd-irq.elf sh 38->49         started        86 Searches for CPU information (likely indicative of DDoS capability) 40->86 88 Sample deletes itself 40->88 90 Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens 40->90 signatures10 process11 signatures12 51 .d 42->51         started        112 Searches for CPU information (likely indicative of DDoS capability) 44->112 55 sh systemctl 47->55         started        57 sh systemctl 49->57         started        process13 file14 74 /var/spool/cron/crontabs/root, ASCII 51->74 dropped 104 Opens /sys/class/net/* files useful for querying network interface information 51->104 106 Sample deletes itself 51->106 108 Sample tries to persist itself using cron 51->108 59 .d sh 51->59         started        62 .d sh 51->62         started        signatures15 process16 signatures17 110 Executes itself again with its parent PID as an argument (indicative of hampering debugging) 59->110 64 sh crontab 59->64         started        68 sh crontab 62->68         started        process18 file19 72 /var/spool/cron/crontabs/tmp.oPSqP1, ASCII 64->72 dropped 92 Sample tries to persist itself using cron 64->92 94 Executes the "crontab" command typically for achieving persistence 64->94 signatures20
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca/
Threat name:
Linux.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2026-06-26 07:18:34 UTC
File Type:
ELF32 Little (SO)
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mlmfp7zqmppned62xc6elb6y2a6jq4574k3i2mo2tl7yrc66o3fa._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/62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca

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 8039da31a8e91d0830858edf53738592f499e24612cebb172cca018ee14382b0

CoinMiner

elf 62d857ff3063ded20fdab8bc4587d8d03c9873bfe2b68d31da9aff888bde76ca

(this sample)

  
Dropped by
SHA256 8039da31a8e91d0830858edf53738592f499e24612cebb172cca018ee14382b0
  
URLhaus
https://urlhaus.abuse.ch/url/3868014/
  
Delivery method
Distributed via web download
  
Dropped by
MD5 67c2b9da374b20bf3bf092c5fc308cbb

Comments