MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53. 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


Merlin


Vendor detections: 9


Intelligence 9 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53
SHA3-384 hash: 16cb5ab8064550f0294341126198d38980403372267c59d548d42a417e0a13ff6bc1b6f83a4471576fa850a65daf10d5
SHA1 hash: 7dfe7772c6946c997c67cd2ab127426260410eaa
MD5 hash: e13aea2034ededa635b2d18ee8ecfdd9
humanhash: emma-illinois-neptune-orange
File name:kwthread
Download: download sample
Signature Merlin
Create hunting rule
File size:8'044'544 bytes
First seen:2025-07-23 00:46:21 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 98304:2ZOCa+4GBJpKMR7TPLeplB/WyWc+tLEIK8XoS:WXpBJpK4PijB/WyItYI9
TLSH T13D864B43ECA511F8C1EEE234CA669213BEA17C49433537D76FA0E6602F76BD066B9710
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 Merlin

Intelligence

File Origin
# of uploads :
1
# of downloads :
19
Origin country :
DE DE
Vendor Threat Intelligence
Result
Verdict:
Clean
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
golang merlin obfuscated
Link:
https://www.filescan.io/uploads/688030ed19132d9848855a99/reports/2d98405e-aac2-493c-ad49-3a6a63aef6fc/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
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/f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/b6d51ede-b78d-4ac4-b8d9-25ab37523c57
Behavior Graph:
Download SVG
%3
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/e8bc2fa0-2575-4bdb-a2cf-529fe892049f
Result
Threat name:
Merlin
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
68 / 100
Link:
https://www.joesandbox.com/analysis/1742393
Signature
Found Tor onion address
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Merlin
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53/
Verdict:
Malicious
Threat:
Linux.Trojan.Merlin
Link:
https://tip.neiki.dev/file/f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53
Threat name:
Linux.Trojan.Merlin
Create hunting rule
Status:
Malicious
First seen:
2025-07-23 00:47:24 UTC
File Type:
ELF64 Little (Exe)
AV detection:
9 of 38 (23.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6kcqdoik33smc3iinjxtewhqtaflei4qpzx3mneq5qsw5rcpjjjq._file
Result
Malware family:
merlin
Create hunting rule
Score:
  10/10
Tags:
family:merlin linux
Link:
https://tria.ge/reports/250723-a4v4va1yav/
Verdict:
Unknown
Tags:
commandandcontrol merlin trojan
YARA:
merlinAgent Linux_Generic_Threat_2c8d824c Multi_Trojan_Merlin_32643f4c
Link:
https://app.threat.zone/submission/6b8fca88-2a77-43cf-aa15-978f6464643f
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.30
Link:
https://yomi.yoroi.company/submissions/f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:dependsonpythonailib
Create hunting rule
Author:Tim Brown
Description:Hunts for dependencies on Python AI libraries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
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:F01_s1ckrule
Create hunting rule
Author:s1ckb017
Rule name:golang
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:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:Linux_Generic_Threat_2c8d824c
Create hunting rule
Author:Elastic Security
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:merlinAgent
Create hunting rule
Author:Hilko Bengen
Description:Detects Merlin agent
Reference:https://github.com/Ne0nd0g/merlin
Rule name:Multi_Trojan_Merlin_32643f4c
Create hunting rule
Author:Elastic Security
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:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
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: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

Merlin

elf f28501b90adee4c16d086a6f3258f0980ab223907e6fb63490ec256ec44f4a53

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3584186/
  
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