MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626. 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


ConnectBack


Vendor detections: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626
SHA3-384 hash: 0943ba22ba3b05d9918c2ad79a736000d1ac209f17c90046139f20a2e3ef2e426c7479b96211cf5ca3cd49f00dc18254
SHA1 hash: c55b4410b706defd39e85b57fc1c6758024d2a17
MD5 hash: f526755a50dbfbeec9bee56e2b00b2ae
humanhash: zulu-minnesota-wyoming-pennsylvania
File name:reverse.elf
Download: download sample
Signature ConnectBack
Create hunting rule
File size:250 bytes
First seen:2024-12-13 08:16:13 UTC
Last seen:2025-11-09 02:43:23 UTC
File type: elf
MIME type:application/x-executable
ssdeep 6:BnX//In8/r1uBxHocmT8W8eD9Q3RQdygg5XJYD:BvwncrAH3mY5eDq532D
TLSH T12BD080330B0B90DADAD4063F6574695CD77B89B6574963710C50DD014C09A045F52C75
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 Joker
Tags:ConnectBack elf malware Metasploit

Intelligence

File Origin
# of uploads :
3
# of downloads :
85
Origin country :
GR GR
Vendor Threat Intelligence
Detection(s):
Unix.Backdoor.Msfvenom-10012672-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=675bee9a89dbe216234fc9bblinux22vpnfull_triage
Tags:
metasploit shellcode virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug connectback
Link:
https://www.filescan.io/uploads/675bed80e11c427f44891b1d/reports/209018a6-a0c3-469b-98ae-443afdfb1e56/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
UPX
Botnet:
unknown
Number of open files:
0
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
MALICIOUS
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/c11c3101-d031-4525-9f8d-07d87f5b853d
Result
Threat name:
ConnectBack
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1574358
Signature
Found malware configuration
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Yara detected ConnectBack
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626/
Threat name:
Linux.Backdoor.ConnectBack
Create hunting rule
Status:
Malicious
First seen:
2024-12-01 08:30:00 UTC
File Type:
ELF64 Little (Exe)
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lmpwhukkf7h2g57rah45wmnfxjxecv4vuly4fbuzizbqcvnw6yta._file
Result
Malware family:
connectback
Create hunting rule
Score:
  10/10
Tags:
family:connectback linux
Link:
https://tria.ge/reports/241213-j6pvaavkgq/
Malware Config
C2 Extraction:
176.122.27.90:8888
Verdict:
Malicious
Tags:
Unix.Backdoor.Msfvenom-10012672-0
YARA:
n/a
Link:
https://app.threat.zone/submission/a7c79fc1-23df-4077-9b7b-132d6668b414
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.23
Link:
https://yomi.yoroi.company/submissions/5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626

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_Trojan_Metasploit_69e20012
Create hunting rule
Author:Elastic Security

File information

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

Web download

ConnectBack

elf 5b1f63d14a2fcfa377f101f9db31a5ba6e415795a2f1c2869946430155b6f626

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3347423/
  
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