MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688
SHA3-384 hash: 55cda66783d021a66f21fd09458a5b3e81bda63167d2bf0c0d88ac44d543d5b29124567209d964343799e7f3918ed890
SHA1 hash: 319752a35e83d302abdded1c5995938e4c1d80dd
MD5 hash: a8d0e994eae7bcd4b51966f757da09f9
humanhash: monkey-artist-seven-ceiling
File name:k2
Download: download sample
File size:168'784 bytes
First seen:2025-04-20 09:28:17 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:sHsK8oZePWSaBTJucCOH7j28H4T/FMEl0L+/Zhzark2LgkpTBnwnc+V34P8xfZUN:sHsKrTJuwH7Uhzonl8xfo
TLSH T129F3EF6AAB715EB7EC0DCE37019D4905118C925A92DA6F6FF6A4C218E78BD0F48D3C48
Magika elf
Reporter abuse_ch
Tags:elf

Intelligence

File Origin
# of uploads :
1
# of downloads :
59
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.Mirai-9441505-0
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6804be6d280f5f89a0d25736linux22vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Collects information on the network activity
Kills processes
Connection attempt
Sends data to a server
Creating a file
Substitutes an application name
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/6804be65ed72ab1a1d4c895e/reports/5905af28-5424-4b9f-98e5-69fb9298bddf/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
mips
Packer:
not packed
Botnet:
unknown
Number of open files:
7
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e5653b1f-afbb-4e3f-a1ab-4fe264ce34c3
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1669659
Signature
Connects to many ports of the same IP (likely port scanning)
Multi AV Scanner detection for submitted file
Sample deletes itself
Sample tries to kill multiple processes (SIGKILL)
Uses known network protocols on non-standard ports
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1669659 Sample: k2.elf Startdate: 20/04/2025 Architecture: LINUX Score: 64 32 41.70.203.26, 37215 movicel-asAO Angola 2->32 34 197.237.21.250, 37215 WANANCHI-KE Kenya 2->34 36 98 other IPs or domains 2->36 38 Multi AV Scanner detection for submitted file 2->38 40 Connects to many ports of the same IP (likely port scanning) 2->40 42 Uses known network protocols on non-standard ports 2->42 9 k2.elf 2->9         started        12 xfce4-panel wrapper-2.0 2->12         started        14 dash rm 2->14         started        16 8 other processes 2->16 signatures3 process4 signatures5 46 Sample tries to kill multiple processes (SIGKILL) 9->46 18 k2.elf 9->18         started        20 wrapper-2.0 xfpm-power-backlight-helper 12->20         started        process6 process7 22 k2.elf 18->22         started        signatures8 44 Sample tries to kill multiple processes (SIGKILL) 22->44 25 k2.elf 22->25         started        28 k2.elf 22->28         started        30 k2.elf 22->30         started        process9 signatures10 48 Sample tries to kill multiple processes (SIGKILL) 25->48 50 Sample deletes itself 25->50
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-04-20 09:29:15 UTC
File Type:
ELF32 Little (Exe)
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g67ugqk6ormgtkkbe4rwnck5kr5iz3tuzgvxxnz2n5lbiar7q2ea._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery
Link:
https://tria.ge/reports/250420-lf1vzaz1gy/
Behaviour
Reads runtime system information
Changes its process name
Contacts a large (29173) amount of remote hosts
Creates a large amount of network flows
Verdict:
Malicious
Tags:
Unix.Trojan.Mirai-9441505-0
YARA:
n/a
Link:
https://app.threat.zone/submission/7efcdaea-cd04-48ae-811f-c6d7eb1be9ec
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688

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
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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 37bf43415e745869a941272366895d547a8cee74c9ab7bb73a6f5614023f8688

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3519277/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments