MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 721038816079e39f95b41461f20ccbf77af20bd22b8a6c71da228bdfa9675413. 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



Joker


Vendor detections: 5


Intelligence 5 IOCs YARA 10 File information Comments

SHA256 hash: 721038816079e39f95b41461f20ccbf77af20bd22b8a6c71da228bdfa9675413
SHA3-384 hash: 7772c364ecbf2f71f887e9b7a21c67812cfd228de6bc7251675670d9eadc1ef91b3437b49061cf338bf2e874443f366a
SHA1 hash: d82cfbbcd997fca26216ce829bd39c0141a81ec7
MD5 hash: a4878822e858617daeeac73a5d9f9629
humanhash: sad-music-victor-charlie
File name:com.messaging.textmessage.messages.sms_29.0.xapk
Download: download sample
Signature Joker
File size:27'705'804 bytes
First seen:2026-07-16 03:08:31 UTC
Last seen:Never
File type: xapk
MIME type:application/zip
ssdeep 786432:YZY9dYVrRX3FCDZK3bIDoVR3bcxEki+nJcFv4H:Ycd0VX3aZKrI0XgGk4WH
TLSH T1DD57F14AF61CD52BD9E5B0BC8D8B17A3B5667D110A10C18B3821B30DF9B37D49B26BE1
TrID 77.1% (.JAR) Java Archive (13500/1/2)
22.8% (.ZIP) ZIP compressed archive (4000/1)
Magika apk
Reporter Anonymous
Tags:joker malware xapk

Intelligence


File Origin
# of uploads :
1
# of downloads :
156
Origin country :
US US
Vendor Threat Intelligence
No detections
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 crypto downloader evasive expand fingerprint lolbin masquerade persistence signed
Verdict:
Malicious
File Type:
zip
First seen:
2026-07-17T00:22:00Z UTC
Last seen:
2026-07-17T00:31:00Z UTC
Hits:
~10
Gathering data
Result
Malware family:
n/a
Score:
  8/10
Tags:
android defense_evasion discovery execution persistence
Behaviour
Registers a broadcast receiver at runtime (usually for listening for system events)
Schedules tasks to execute at a specified time
Checks the presence of a debugger
Acquires the wake lock
Queries information about active data network
Reads information about phone network operator.
Queries information about running processes on the device
Checks if the Android device is rooted.
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BLOWFISH_Constants
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:RANSOMWARE
Author:ToroGuitar
Rule name:SHA512_Constants
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_ZIP_Smuggling_Jun01
Author:delivr.to
Description:ZIP archives with data smuggled between last file record and the central directory.
Reference:https://github.com/Octoberfest7/zip_smuggling/
Rule name:telebot_framework
Author:vietdx.mb
Rule name:WHIRLPOOL_Constants
Author:phoul (@phoul)
Description:Look for WhirlPool constants
Rule name:without_attachments
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the no presence of any attachment
Reference:http://laboratorio.blogs.hispasec.com/
Rule name:with_urls
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the presence of an or several urls
Reference:http://laboratorio.blogs.hispasec.com/

File information


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

Comments