MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b3fef4fdf9eeca32609a18a3a80594b228042b3d25630f758cd96e66840d2da. 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: 6


Intelligence 6 IOCs YARA 3 File information Comments

SHA256 hash: 6b3fef4fdf9eeca32609a18a3a80594b228042b3d25630f758cd96e66840d2da
SHA3-384 hash: f6f7e79230edcacee22ccbf4f9686667d5726b9de4efd0c199d02ea778235d89a0b14f1fab1b9ca64eba6861f67843d4
SHA1 hash: 95fedc6edf51046ccba39267a4ba3d817231610a
MD5 hash: b2dfa565392584bd23d59d1932676342
humanhash: wyoming-paris-bacon-sierra
File name:s390x
Download: download sample
File size:502'120 bytes
First seen:2025-06-16 04:30:06 UTC
Last seen:2025-06-16 20:21:34 UTC
File type: elf
MIME type:application/x-executable
ssdeep 12288:NbX5mTA3bZNKiG01B7crv+SF7GW5a65jx:tX5m83bZNKi3B7AZXa
TLSH T1B4B401CE9520D295C4B02D33C57BA2F682AB6D3609596E1CDDD8FF6B2CF67050638B12
Magika elf
Reporter abuse_ch
Tags:elf

Intelligence


File Origin
# of uploads :
2
# of downloads :
75
Origin country :
DE DE
Vendor Threat Intelligence
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
exploit gcc lolbin remote
Status:
terminated
Behavior Graph:
%3 guuid=766efb6a-1a00-0000-90ba-3647e70a0000 pid=2791 /usr/bin/sudo guuid=bbc0e46d-1a00-0000-90ba-3647e90a0000 pid=2793 /tmp/sample.bin guuid=766efb6a-1a00-0000-90ba-3647e70a0000 pid=2791->guuid=bbc0e46d-1a00-0000-90ba-3647e90a0000 pid=2793 execve
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.spyw
Score:
60 / 100
Signature
Connects to many ports of the same IP (likely port scanning)
Executes the "crontab" command typically for achieving persistence
Opens /sys/class/net/* files useful for querying network interface information
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to persist itself using cron
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1715094 Sample: s390x.elf Startdate: 16/06/2025 Architecture: LINUX Score: 60 38 31.200.249.162, 31748, 43274 NETRACK-ASRU Russian Federation 2->38 40 50.35.52.144, 6881 ZIPLY-FIBER-LEGACY-ASNUS United States 2->40 42 102 other IPs or domains 2->42 44 Connects to many ports of the same IP (likely port scanning) 2->44 10 s390x.elf configuration 2->10         started        signatures3 process4 process5 12 s390x.elf sh 10->12         started        14 configuration 10->14         started        17 s390x.elf sh 10->17         started        signatures6 19 sh crontab 12->19         started        23 sh 12->23         started        52 Opens /sys/class/net/* files useful for querying network interface information 14->52 54 Sample reads /proc/mounts (often used for finding a writable filesystem) 14->54 25 configuration 14->25         started        27 sh crontab 17->27         started        process7 file8 36 /var/spool/cron/crontabs/tmp.d26lFW, ASCII 19->36 dropped 46 Sample tries to persist itself using cron 19->46 48 Executes the "crontab" command typically for achieving persistence 19->48 29 sh crontab 23->29         started        32 configuration 25->32         started        signatures9 process10 signatures11 50 Executes the "crontab" command typically for achieving persistence 29->50 34 configuration 32->34         started        process12
Threat name:
Linux.Trojan.Generic
Status:
Suspicious
First seen:
2025-06-16 04:30:46 UTC
File Type:
ELF64 Big (Exe)
AV detection:
12 of 23 (52.17%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
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:linux_generic_ipv6_catcher
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:unixredflags3
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 6b3fef4fdf9eeca32609a18a3a80594b228042b3d25630f758cd96e66840d2da

(this sample)

  
Delivery method
Distributed via web download

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