MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac. 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


Supershell


Vendor detections: 10


Intelligence 10 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac
SHA3-384 hash: bb4459ddef98cbeca808bc359d09ec9643add0730344f5ecde3eaf4103623e66344442f757009e450b6f486c1d933da9
SHA1 hash: 48cf4ffa957c24cc1027064f6ba4da3221e7c3c7
MD5 hash: f39707848865593bac48d83d490ff86d
humanhash: zulu-july-pasta-yankee
File name:crond
Download: download sample
Signature Supershell
Create hunting rule
File size:12'513'280 bytes
First seen:2025-12-03 19:45:34 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 49152:7fJlEqJT/n0fwzofmICn36XhWzT5ePlUxg+oiS+BeKWFvSwuaEe9U2QBym/zE0cZ:ncVzC36xumKWUzaTbVQZ4Esoy/rX/
TLSH T11DC60903E89611A9C4EAD1B489214162FA707C5C0B7833DB6BA1F7B52B337F05E7A791
telfhash t18d629b7549bd34b5b2aada11f3a374b4953318b576f834f01037ad91efd0e802c9a86b
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 abuse_ch
Tags:elf Supershell upx-dec


Avatar
abuse_ch
UPX decompressed file, sourced from SHA256 240afa3a6457f1ee866f6f03ff815009ff8fd7b70b902bc59b037ac54b6cae9b
File size (compressed) :4'740'104 bytes
File size (de-compressed) :12'513'280 bytes
Format:linux/amd64
Packed file: 240afa3a6457f1ee866f6f03ff815009ff8fd7b70b902bc59b037ac54b6cae9b

Intelligence

File Origin
# of uploads :
1
# of downloads :
39
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Gains root access
Sends data to a server
Launching a process
Receives data from a server
Runs as daemon
Creating a process from a recently created file
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
crypto golang obfuscated
Link:
https://www.filescan.io/uploads/69309389d4d2310e5cbe8b7d/reports/cdcebf69-ffa2-4b53-9190-5774ade4cada/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2025-12-03T17:46:00Z UTC
Last seen:
2025-12-03T18:07:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.Linux.Supershell.gen
Link:
https://opentip.kaspersky.com/8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac/results?tab=lookup
Gathering data
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/1825769
Signature
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1825769 Sample: crond.elf Startdate: 03/12/2025 Architecture: LINUX Score: 48 20 109.202.202.202, 80 INIT7CH Switzerland 2->20 22 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->22 24 3 other IPs or domains 2->24 26 Multi AV Scanner detection for submitted file 2->26 8 crond.elf 2->8         started        10 dash rm 2->10         started        12 dash rm 2->12         started        14 python3.8 dpkg 2->14         started        signatures3 process4 process5 16 crond.elf exe 8->16         started        process6 18 exe whoami 16->18         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac/
Verdict:
Malicious
Threat:
Family.SUPERSHELL
Link:
https://tip.neiki.dev/file/8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac
Threat name:
Linux.Backdoor.SuperShell
Create hunting rule
Status:
Malicious
First seen:
2025-12-03 19:46:25 UTC
File Type:
ELF64 Little (Exe)
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r4qcbgqhzd5n7po2puuhq2v56d7nw65yhmie4lveld75uccaygwa._file
Result
Malware family:
supershell
Create hunting rule
Score:
  10/10
Tags:
family:supershell discovery linux
Link:
https://tria.ge/reports/251203-yg33yafp9v/
Behaviour
Enumerates kernel/hardware configuration
Malware Config
C2 Extraction:
198.46.221.26:3232
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1e96ff5d-9166-41e4-a65d-4b88d05ff37d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:enterpriseunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise UNIX
Rule name:GoBinTest
Create hunting rule
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_GObfuscate_May21
Create hunting rule
Author:James Quinn, Paul Hager (merged with new similar pattern)
Description:Identifies binaries obfuscated with gobfuscate
Reference:https://github.com/unixpickle/gobfuscate
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

Supershell

elf 240afa3a6457f1ee866f6f03ff815009ff8fd7b70b902bc59b037ac54b6cae9b

Supershell

elf 8f20209a07c8fadfbdda7d28786abdf0fedb7bb83b104e2ea458ffda0840c1ac

(this sample)

  
Dropped by
SHA256 240afa3a6457f1ee866f6f03ff815009ff8fd7b70b902bc59b037ac54b6cae9b
  
Dropped by
MD5 5dc9adec552665516b8e3ad478d5b162

Comments