MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10. 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: cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10
SHA3-384 hash: aff0f1dbe57419ae3df7e6fe11ca263d70f0a368606b0de95a891e06979dd3737424ab374ec3243e70d628aa1d038aea
SHA1 hash: b9ab2e5af2d8895ac14beefba10506a87214d59e
MD5 hash: 3f1fc3a3ef99d8e77879bf33238541b6
humanhash: cola-bulldog-papa-indigo
File name:k2
Download: download sample
File size:101'816 bytes
First seen:2025-04-23 09:17:01 UTC
Last seen:2025-04-24 05:35:25 UTC
File type: elf
MIME type:application/x-executable
ssdeep 3072:7FzY9Iq9fGUpmdx07Ol/hnIdolOm9zPN:Jz0fGOaAKz
TLSH T10FA3D68BFB600EFFD85BCD3305980B1624CD551F51A92FB63A39D828BB4654B4AD3CA4
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:elf

Intelligence

File Origin
# of uploads :
2
# of downloads :
81
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=6808b0c83d067f8483985268linux22vpnfull_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:
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/cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10
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/e64e1359-3a8e-4bd5-b1fd-baaaa6504d05
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1671861
Signature
Multi AV Scanner detection for submitted file
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: 1671861 Sample: k2.elf Startdate: 23/04/2025 Architecture: LINUX Score: 56 31 197.191.9.226 zain-asGH Ghana 2->31 33 41.202.150.0, 37215 ZIPNETGH unknown 2->33 35 98 other IPs or domains 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 Uses known network protocols on non-standard ports 2->39 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 43 Sample tries to kill multiple processes (SIGKILL) 9->43 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        process8 24 k2.elf 22->24         started        27 k2.elf 22->27         started        29 k2.elf 22->29         started        signatures9 41 Sample tries to kill multiple processes (SIGKILL) 24->41
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10/
Threat name:
Linux.Worm.Mirai
Create hunting rule
Status:
Malicious
First seen:
2025-04-23 09:17:24 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zmwxgzs3ut75wmbd3bgfn2ilfblco3ugzmgyo45bcdzo7j7ftiia._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery
Link:
https://tria.ge/reports/250423-k8793sxm16/
Behaviour
Reads runtime system information
Changes its process name
Contacts a large (36086) 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/30317905-3d03-4d9c-9cc8-43fbe8a09113
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/cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10

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 cb2d73665ba4ffdb3023d84c56e90b2856276e86cb0d8773a110f2efa7e59a10

(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