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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8. 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


AMOS


Vendor detections: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8
SHA3-384 hash: f5efb492dfcbb79d3a74efdeae6502f1e7aaa8a059de19700b57ab1d2a6ed698f4cbdb4725ce17a23e75aa961b58f84a
SHA1 hash: 46804336775900cedfa6ed48ac71be1992d57456
MD5 hash: a8ab96747400cf1d827dd8391cc78f92
humanhash: twenty-maine-echo-fruit
File name:macho_21f5852d9ade.bin
Download: download sample
Signature AMOS
Create hunting rule
File size:1'939'040 bytes
First seen:2026-11-01 10:10:57 UTC
Last seen:Never
File type:php macho
MIME type:application/x-mach-binary
ssdeep 49152:/MCBy55Eotx8FQ7bULsaS4I7pzPPa72tQpr8T61:0CBPotoX6Bi
TLSH T12695E0409E5EA10BC98D41339C958B19897671C0CE89DDEEA301639BDE3E39377271EB
TrID 69.8% (.DYLIB) Mac OS X Mach-O universal Dynamically linked shared Library (32500/1/5)
15.0% (.O/DYLIB/BUNDLE) Mac OS X Universal Binary (generic) (7002/2)
15.0% (.CLASS) Java bytecode (7001/2/1)
Magika macho
Reporter c4ffeine
Tags:AMOS ClickFix Foxveil Mach-O machO macOS


Avatar
c4ffeine
Foxveil/AMOS reflective loader Mach-O (1,939,040 B), first seen on YARAify 2026-10-29 13:19 UTC (file name 8d5wkyb6, Foxveil payload series, no source URL captured by us). Matches the Foxveil loader YARA rule. Not executed.

Intelligence

File Origin
# of uploads :
1
# of downloads :
141
Origin country :
US US
Vendor Threat Intelligence
No detections
Detection(s):
SecuriteInfo.com.MacOS.Agent-BWZ.61322776.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ae71045b121dd519dcf26f8
Tags:
malware
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/6ae710421acf59e14edfacfc/reports/b4da53cd-6bd6-4631-a6ce-84c843cd842f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8
Verdict:
Malicious
File Type:
macho fat
First seen:
2026-10-29T12:12:00Z UTC
Last seen:
2026-11-02T20:20:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8/results?tab=lookup
Score:
100%
Verdict:
Malware
File Type:
Mach-O universal binary
Link:
https://malprob.io/report/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8/
Threat name:
MacOS.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-10-31 09:03:56 UTC
File Type:
Binary (Archive)
Extracted files:
2
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=eh2yklm23yrpsdtd4z4jrxgg6d5sidtyfsbg6uj6gtlilu77rsua._file
Malware Family:
amos
Create hunting rule
Malicious:
True
Tags:
multi-arch arm self-signed macho 64bits
Link:
https://intel.virussign.com/intelligence/file/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8
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/21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:Foxveil_Loader_TaskInfo_NoFw_Variant
Create hunting rule
Description:Foxveil macOS loader (ClickFix -> AMOS), quill/stratos generation, framework-agnostic: fat x86_64+arm64 linking libSystem+libc++ with any number of system frameworks (zero since 2026-10-30) and no framework, CF, objc or swift import, the task_info/mach_task_self_/pthread_once resolver core in both slices, and a 128 KB-1 MB __DATA_CONST,__const payload section in both slices
Rule name:Foxveil_Loader_TaskInfo_Variant
Create hunting rule
Description:Foxveil macOS loader (ClickFix -> AMOS), quill generation with run-time settings back inside the payload script (no constructor settings file): fat x86_64+arm64 linking CoreFoundation+libSystem+libc++ but importing nothing from CoreFoundation or objc, with the task_info/mach_task_self_ resolver core in both slices inside a per-build random libc decoy import set

File information

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

Web download

AMOS

php macho 21f5852d9ade22f90e63e67898dcc6f0fb240e782c826f513e34d685d3ff8ca8

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3968966/

Comments