MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e
SHA3-384 hash: b7d447e2ab3f83acdec270c83b0a9aed2e32fd99acc9127f3737cf625ba2e3f592f70c1a2c3fe22e5c63b9288512e25a
SHA1 hash: 75723ca67edbcefecc66406b6b043b46b05806f9
MD5 hash: 850b4d0895246fd9cc107aba7468effd
humanhash: finch-july-white-delta
File name:sh.elf
Download: download sample
Signature ConnectBack
Create hunting rule
File size:250 bytes
First seen:2026-01-09 16:38:51 UTC
Last seen:2026-01-10 01:14:16 UTC
File type: elf
MIME type:application/x-executable
ssdeep 6:BnX//In8/r1uBxHocmT5/3Q3RQdygg5RYD:BvwncrAH3mNk53OD
TLSH T1EDD022230B0A40ABCAD4113EA6A80868837B897612096220099089000C097002E22C35
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika unknown
Reporter abuse_ch
Tags:ConnectBack elf

Intelligence

File Origin
# of uploads :
2
# of downloads :
50
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Detection(s):
Unix.Backdoor.Msfvenom-10012672-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/69612f4507ef5fa68e82ee0a/reports/19e56695-88ce-4f59-9c10-2dc68ff382e4/overview
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-01-09T13:45:00Z UTC
Last seen:
2026-01-11T08:48:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Linux.Shellcode.gen HEUR:Backdoor.Linux.Mswr.a
Link:
https://opentip.kaspersky.com/618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/2ee813fb-6f0c-41e0-bda2-91471360db6b
Behavior Graph:
Download SVG
%3 guuid=4bdc1925-1a00-0000-a317-85a25a0b0000 pid=2906 /usr/bin/sudo guuid=de2ad627-1a00-0000-a317-85a2610b0000 pid=2913 /tmp/sample.bin net guuid=4bdc1925-1a00-0000-a317-85a25a0b0000 pid=2906->guuid=de2ad627-1a00-0000-a317-85a2610b0000 pid=2913 execve c667712f-b46b-5123-87c2-e6de868fe410 194.26.141.203:4444 guuid=de2ad627-1a00-0000-a317-85a2610b0000 pid=2913->c667712f-b46b-5123-87c2-e6de868fe410 con
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/efb3ae68-8bf4-4bbf-a1f4-1e931b086727
Result
Threat name:
ConnectBack
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1847437
Signature
Found malware configuration
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/618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e/
Verdict:
Malicious
Threat:
Family.CONNECTBACK
Link:
https://tip.neiki.dev/file/618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e
Threat name:
Linux.Trojan.MsfShellBin
Create hunting rule
Status:
Malicious
First seen:
2026-01-09 16:39:32 UTC
File Type:
ELF64 Little (Exe)
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mggrqvkavkby2s2tcwuo4pbigj57rbo4uqcpo6i4jtoxdgmfxrxa._file
Result
Malware family:
connectback
Create hunting rule
Score:
  10/10
Tags:
family:connectback linux
Link:
https://tria.ge/reports/260109-t58acaaz2g/
Malware Config
C2 Extraction:
194.26.141.203:4444
Verdict:
Malicious
Tags:
Unix.Backdoor.Msfvenom-10012672-0
YARA:
n/a
Link:
https://app.threat.zone/submission/6092bef6-4441-4be4-ba6a-2d4a98d02333
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e

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 618d185540aa838d4b5315a8ee3c28327bf885dca404f7791c4cdd719985bc6e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3754652/
  
Delivery method
Distributed via web download

Comments