MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83b78a436b2105cc98eefd04f7621dc2072be71d4f89e3310dae654e4d5c7a9e. 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: 9


Intelligence 9 IOCs YARA File information Comments

SHA256 hash: 83b78a436b2105cc98eefd04f7621dc2072be71d4f89e3310dae654e4d5c7a9e
SHA3-384 hash: 44ae310882a959aa15c5f4fc0a99c8481988924a2086d153a05b6459168ec1d723cad9662768b996795071be8242e65b
SHA1 hash: 67da49696260e0ca09c60bed13a3f9a5d75f6239
MD5 hash: e9f62d2bbb5497433369816f9c6583a9
humanhash: low-sierra-seven-louisiana
File name:SOLICITUD DE PRESUPUESTO.js
Download: download sample
Signature MassLogger
File size:7'689'354 bytes
First seen:2026-07-21 16:51:23 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 49152:GDIX88kfYuA1rIdl+NCafQIN1LOfUSkScIcDWNspbPwzL3f06WloEt9yNRJprDXr:6NhGCY1M8DW+FKEqZr7kkzbYbn1wleu/
TLSH T1E3767D3183F12299D9656590666B83664F769AF27135104C07E8073237FFB38F9EBB0A
TrID 66.6% (.TXT) Text - UTF-16 (LE) encoded (2000/1)
33.3% (.MP3) MP3 audio (1000/1)
Magika html
Reporter threatcat_ch
Tags:js MassLogger

Intelligence


File Origin
# of uploads :
1
# of downloads :
180
Origin country :
CH CH
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd conhost expand lolbin obfuscated powershell repaired
Verdict:
Malicious
File Type:
js
First seen:
2026-07-20T12:42:00Z UTC
Last seen:
2026-07-23T15:09:00Z UTC
Hits:
~10000
Result
Threat name:
MSIL Logger, MassLogger RAT
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Creates an undocumented autostart registry key
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sigma detected: PowerShell Base64 Encoded IEX Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious command line found
Suspicious execution chain found
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
WScript reads language and country specific registry keys (likely country aware script)
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1945992 Sample: SOLICITUD DE PRESUPUESTO.js Startdate: 21/07/2026 Architecture: WINDOWS Score: 100 24 reallyfreegeoip.org 2->24 26 manguerasyarticulos.com 2->26 28 2 other IPs or domains 2->28 36 Found malware configuration 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Yara detected MSIL Logger 2->40 44 5 other signatures 2->44 9 wscript.exe 1 1 2->9         started        signatures3 42 Tries to detect the country of the analysis system (by using the IP) 24->42 process4 signatures5 50 Windows Scripting host queries suspicious COM object (likely to drop second stage) 9->50 52 Suspicious execution chain found 9->52 54 WScript reads language and country specific registry keys (likely country aware script) 9->54 12 conhost.exe 9->12         started        process6 signatures7 56 Suspicious command line found 12->56 15 cmd.exe 1 12->15         started        process8 signatures9 58 Suspicious command line found 15->58 18 powershell.exe 15 19 15->18         started        22 cmd.exe 1 15->22         started        process10 dnsIp11 30 manguerasyarticulos.com 72.52.253.12, 25 LIQUIDWEB-LiquidWebLLCUS United States 18->30 32 checkip.dyndns.com 132.226.8.169, 49771, 80 ORACLE-BMC-31898-OracleCorporationUS Japan 18->32 34 reallyfreegeoip.org 104.21.67.152, 443, 49772 CLOUDFLARENET-CloudflareIncUS Canada 18->34 46 Creates an undocumented autostart registry key 18->46 48 Tries to harvest and steal browser information (history, passwords, etc) 18->48 signatures12
Gathering data
Threat name:
Win32.Trojan.Malgent
Status:
Malicious
First seen:
2026-07-21 00:59:53 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 37 (18.92%)
Threat level:
  5/5
Result
Malware family:
masslogger
Score:
  10/10
Tags:
family:masslogger collection execution persistence spyware stealer
Behaviour
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
Executes a command shell one-liner
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Registers new Windows logon scripts automatically executed at logon.
Badlisted process makes network request
Family: MassLogger
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

MassLogger

Java Script (JS) js 83b78a436b2105cc98eefd04f7621dc2072be71d4f89e3310dae654e4d5c7a9e

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments