MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8. 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


MassLogger


Vendor detections: 11


Intelligence 11 IOCs YARA 21 File information Comments
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SHA256 hash: 1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8
SHA3-384 hash: 4a2fcecc6830d87948b83566b54ebbf18b7571d02d43d8d6ad618955d9f0c131c9492c68abe94126c2ba3b815ebf6895
SHA1 hash: fe02d913cf055dea4cf26de1c1d58ce08914e32b
MD5 hash: 5bd36afeec596fea704dd84b9943291d
humanhash: item-social-echo-summer
File name:DOC98716525 - ATR520260506-Draftpacking.js
Download: download sample
Signature MassLogger
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File size:1'103'484 bytes
First seen:2026-06-05 08:37:28 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 12288:y9hy2hMsZoknG0sEBATDzgFdCubUjdrnjJkKgNAxqZjV9g1PRlJIfAfmdYZ5J7Sk:8hHGjCATDzxclhZx9sKO5J7YrARn/
TLSH T183355B07D66E574D180A3B65106F5DDAFE89CEFCEF726BC4E08E90B160EA1110B856B3
Magika javascript
Reporter abuse_ch
Tags:js MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
120
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Detection(s):
Sanesecurity.Malware.32567.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a228afff8676ad4d3615680
Tags:
rapid shell spawn smtp
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm aspnet_compiler base64 encrypted evasive evasive fingerprint lolbin obfuscated obfuscated powershell reconnaissance repaired
Link:
https://www.filescan.io/uploads/6a228af5e05d89b36140d4e1/reports/6f45f9cd-4be8-4239-98a1-d6ebc44b100b/overview
Verdict:
Malicious
Labled as:
JS/TrojanDropper.Agent
Link:
https://www.hybrid-analysis.com/sample/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8
Verdict:
Malicious
File Type:
js
First seen:
2026-06-04T21:19:00Z UTC
Last seen:
2026-06-06T03:24:00Z UTC
Hits:
~100
Detections:
Trojan.PowerShell.Agent.sb Trojan-Dropper.JS.SDrop.sb Trojan.PowerShell.Cobalt.sb Trojan.JS.SAgent.sb HEUR:Trojan-Downloader.Script.Generic PDM:Trojan.Win32.Generic Trojan-Spy.MSIL.BPLogger.sb Trojan-PSW.Win32.Stelega.sb Trojan-PSW.Win32.Stealer.sb HEUR:Worm.Script.Generic HEUR:Trojan.Script.Generic
Link:
https://opentip.kaspersky.com/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8/results?tab=lookup
Result
Threat name:
MSIL Logger, MassLogger RAT
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Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1923492
Signature
.NET source code references suspicious native API functions
AI detected malicious Powershell script
Bypasses PowerShell execution policy
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
JavaScript file contains suspicious strings
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
WScript reads language and country specific registry keys (likely country aware script)
Wscript starts Powershell (via cmd or directly)
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Powershell decode and execute
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1923492 Sample: DOC98716525 - ATR520260506-... Startdate: 05/06/2026 Architecture: WINDOWS Score: 100 35 reallyfreegeoip.org 2->35 37 mail.briscool.com.tr 2->37 39 2 other IPs or domains 2->39 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for submitted file 2->49 53 10 other signatures 2->53 8 wscript.exe 3 2->8         started        signatures3 51 Tries to detect the country of the analysis system (by using the IP) 35->51 process4 file5 29 C:\Temp\ps_0LmfL4TVqgrM_1780650479787.ps1, ASCII 8->29 dropped 55 JScript performs obfuscated calls to suspicious functions 8->55 57 Suspicious powershell command line found 8->57 59 Wscript starts Powershell (via cmd or directly) 8->59 61 4 other signatures 8->61 12 powershell.exe 16 8->12         started        15 taskkill.exe 1 8->15         started        signatures6 process7 signatures8 63 Writes to foreign memory regions 12->63 65 Injects a PE file into a foreign processes 12->65 17 aspnet_compiler.exe 15 2 12->17         started        21 conhost.exe 12->21         started        23 aspnet_compiler.exe 12->23         started        27 4 other processes 12->27 25 conhost.exe 15->25         started        process9 dnsIp10 31 checkip.dyndns.com 132.226.247.73, 49711, 80 ORACLE-BMC-31898-OracleCorporationUS Brazil 17->31 33 reallyfreegeoip.org 172.67.177.134, 443, 49712 CLOUDFLARENET-CloudflareIncUS Canada 17->33 41 Tries to steal Mail credentials (via file / registry access) 17->41 43 Tries to harvest and steal browser information (history, passwords, etc) 17->43 signatures11
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8/
Verdict:
Malicious
Threat:
Family.SNAKE
Link:
https://tip.neiki.dev/file/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cvkwidhn5pbii3mwp7pgt7krkopx6dv3zg2twk36mgrm353cro4a._file
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection defense_evasion discovery execution spyware stealer
Link:
https://tria.ge/reports/260605-kjypcacw7v/
Behaviour
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Command and Scripting Interpreter: JavaScript
Enumerates physical storage devices
System Location Discovery: System Language Discovery
ConfuserEx .NET packer
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Family: MassLogger
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/1555640cedebc2846d967fde69fd51539f7f0ebbc9b53b2b7e61a2cdf7628bb8

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:Base64_Encoded_Powershell_Directives
Create hunting rule
Rule name:crime_snake_keylogger
Create hunting rule
Author:Rony (r0ny_123)
Description:Detects Snake keylogger payload
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:MAL_Envrial_Jan18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:MAL_Envrial_Jan18_1_RID2D8C
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_obfuscated_JS_obfuscatorio
Create hunting rule
Author:@imp0rtp3
Description:Detect JS obfuscation done by the js obfuscator (often malicious)
Reference:https://obfuscator.io
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb
Rule name:TelegramAPIMalware_PowerShell_EXE
Create hunting rule
Author:@polygonben
Description:Hunting for pwsh malware using Telegram for C2
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Trojan_SnakeKeylogger_af3faa65
Create hunting rule
Author:Elastic Security
Rule name:win_dotnet_vb_stealer_rat
Create hunting rule
Author:Arrbat
Description:Detects .NET/VB executables with stealer/RAT capabilities (sockets, HTTP, processes, registry, etc).
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch

File information

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

Comments