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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384. 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


CatStorm


Vendor detections: 7


Intelligence 7 IOCs YARA 31 File information Comments
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SHA256 hash: cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384
SHA3-384 hash: 373aa8d94a600c21ecfbcdb046ea1972a64d08bfae2d7f152865c0e2f33732a74f246615ab6f1c978576199b399ebd39
SHA1 hash: 7f325c7f0e3f0e1e0bea9e231ba57bc2ef462db0
MD5 hash: 3870c979f0d91d3c3e9fdc36b4f7e3b2
humanhash: north-timing-foxtrot-friend
File name:aarch64
Download: download sample
Signature CatStorm
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File size:5'570'744 bytes
First seen:2026-10-27 05:25:04 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:5bdRgzFl+XE1Q/3cy/W+Qj/T9z4W6NiusZ7TKhj5Eu:5bdRqFl+kQ/3lW+QORI7TYVEu
TLSH T172465C59BC1DB462DAC976752F6213957239FC089F82C3272614FB3DEAF23588F12261
gimphash e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
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 BlinkzSec
Tags:CatStorm

Intelligence

File Origin
# of uploads :
1
# of downloads :
62
Origin country :
AT AT
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.Linux.Flooder-5.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a process from a recently created file
Gathering data
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-10-27T03:25:00Z UTC
Last seen:
2026-10-27T09:10:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/8f2df4c0-c179-4b34-a2e9-a941ff54ff55
Behavior Graph:
Download SVG
%3 guuid=9507efcc-1b00-0000-76a9-e34c2a0a0000 pid=2602 /usr/bin/sudo guuid=74d3ffd0-1b00-0000-76a9-e34c2f0a0000 pid=2607 /tmp/sample.bin guuid=9507efcc-1b00-0000-76a9-e34c2a0a0000 pid=2602->guuid=74d3ffd0-1b00-0000-76a9-e34c2f0a0000 pid=2607 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/cba2c2e2-cef2-488a-9f3d-27581f1cef5f
Result
Threat name:
CatStorm
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Detection:
malicious
Classification:
troj.mine
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1992653
Signature
Found strings related to Crypto-Mining
Multi AV Scanner detection for submitted file
Yara detected CatStorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1992653 Sample: aarch64.elf Startdate: 27/10/2026 Architecture: LINUX Score: 60 31 Multi AV Scanner detection for submitted file 2->31 33 Yara detected CatStorm 2->33 35 Found strings related to Crypto-Mining 2->35 13 aarch64.elf 2->13         started        process3 process4 15 aarch64.elf aarch64.elf 13->15         started        process5 17 aarch64.elf aarch64.elf 15->17         started        process6 19 aarch64.elf aarch64.elf 17->19         started        process7 21 aarch64.elf aarch64.elf 19->21         started        process8 23 aarch64.elf aarch64.elf 21->23         started        process9 25 aarch64.elf aarch64.elf 23->25         started        process10 27 aarch64.elf aarch64.elf 25->27         started        process11 29 aarch64.elf aarch64.elf 27->29         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384/
Threat name:
Linux.Trojan.Generic
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Status:
Suspicious
First seen:
2026-10-27 05:19:24 UTC
File Type:
ELF64 Little (Exe)
AV detection:
7 of 24 (29.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6d65elge6cw3j4wrf26nzmpug6zrmwcovctegngpcskkh6h2oca._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/261027-f4hfmsyv3k/
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:ach_202610_elf_catstorm
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Author:abuse.ch
Description:Detects CatStorm
Rule name:CP_Script_Inject_Detector
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Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
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Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
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Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
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Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:ELF_Packer_Dropper_Fileless_Armhf
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Author:Serhii Kocherhan
Description:Detects obfuscated Linux ELF packers/droppers featuring ChaCha20/RC4 decryption, memfd_create/execveat fileless execution capabilities, and unique binary artifacts.
Rule name:enterpriseapps2
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Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:exploit_any_poppopret
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Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:F01_s1ckrule
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Author:s1ckb017
Rule name:GoBinTest
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Rule name:golang
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Rule name:golang_binary_string
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Description:Golang strings present
Rule name:Golang_Find_CSC846
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Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:Golang_Find_CSC846_Simple
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Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:identity_golang
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Author:Eric Yocam
Description:find Golang malware
Rule name:LIN_Malware_Unknown_ForgeAuto_0daebbb8
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Author:Marjoriefort
Description:Detects Unknown (elf, etat binaire)
Rule name:MIRAI_TELNETCURL_payload
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Author:AfterPacket
Description:Mirai-lineage ELF payload carrying the leaked-source decoy domain
Reference:https://github.com/Afterpacket/drosera-threat-intel
Rule name:NSVPS_Hydra_SSH_Bruteforce
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Author:sanad (NSVPS-SOC)
Description:Hydra SSH brute-force campaign credentials pattern from NSVPS honeypot
Rule name:ProgramLanguage_Golang
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Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
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Author:ToroGuitar
Rule name:setsockopt
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Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA512_Constants
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Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Suspicious_Golang_Binary
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Author:Tim Machac
Description:Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)
Rule name:telebot_framework
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Author:vietdx.mb
Rule name:TH_Generic_MassHunt_Linux_Malware_2026_CYFARE
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Author:CYFARE
Description:Generic Linux malware mass-hunt rule - 2026
Reference:https://cyfare.net/
Rule name:unixredflags3
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Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
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Author:nex
Description:Possibly employs anti-virtualization techniques
Rule name:Web_Generic_Binary_URL_Download
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Author:Serhii Kocherhan
Description:Detects files containing HTTP or HTTPS links pointing directly to .bin payload extensions.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

CatStorm

elf cf87ee916627856da7968975e6e58fa1bd98b2c275453219a678a4a51fc7d384

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/4035414/
  
Delivery method
Distributed via web download

Comments