MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d
SHA3-384 hash: 3cc04b728f8e5f218d510f70e9cb7d4cb81a124aba9cbd31cb8f64909f8b99c3fb45f557acc4e452da0da4a10228d2cd
SHA1 hash: ce1768ddbfbbe9bdc3a495054faf851e5fda3071
MD5 hash: bba6782bac30093374f97883867e0b17
humanhash: kitten-cola-emma-red
File name:PO-097909-0969-08-2026-QTN200-09768.js
Download: download sample
Signature MassLogger
Create hunting rule
File size:842'973 bytes
First seen:2026-08-04 09:15:43 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 12288:yACoVfus7Kt8W04e0wqR4pJH3BDvTdPFNtal/9W8H7ApO/+pfVBKmUVSZzLPM1Ux:iSWN1WJH3BD89W8HcAm5U0ZFdBJ
TLSH T13505D0A34A093FF547B009DE41293557D2D2C6131D3DB27D3B6229CEBE2E2424D6EB86
Magika javascript
Reporter abuse_ch
Tags:js MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
176
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd conhost lolbin obfuscated powershell repaired
Link:
https://www.filescan.io/uploads/6a71adf18675b5253368049b/reports/0041b1b5-8118-40f8-9602-b752e2f062e6/overview
Verdict:
Suspicious
Labled as:
JS/Agent.EUT
Link:
https://www.hybrid-analysis.com/sample/c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d
Verdict:
Malicious
File Type:
js
First seen:
2026-08-03T18:26:00Z UTC
Last seen:
2026-08-05T20:45:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d/results?tab=lookup
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1951824
Signature
.NET source code contains potential unpacker
.NET source code contains process injector
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
Creates an undocumented autostart registry key
Found malware configuration
Joe Sandbox ML detected suspicious sample
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
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:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1951824 Sample: PO-097909-0969-08-2026-QTN2... Startdate: 04/08/2026 Architecture: WINDOWS Score: 100 27 reallyfreegeoip.org 2->27 29 mail.spacaex.com 2->29 31 2 other IPs or domains 2->31 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Antivirus detection for URL or domain 2->45 49 10 other signatures 2->49 10 wscript.exe 1 1 2->10         started        signatures3 47 Tries to detect the country of the analysis system (by using the IP) 27->47 process4 signatures5 55 JScript performs obfuscated calls to suspicious functions 10->55 57 Windows Scripting host queries suspicious COM object (likely to drop second stage) 10->57 59 Suspicious execution chain found 10->59 61 WScript reads language and country specific registry keys (likely country aware script) 10->61 13 conhost.exe 10->13         started        process6 signatures7 63 Suspicious command line found 13->63 16 conhost.exe 13->16         started        process8 signatures9 39 Suspicious command line found 16->39 19 cmd.exe 1 16->19         started        process10 process11 21 powershell.exe 15 10 19->21         started        25 cmd.exe 1 19->25         started        dnsIp12 33 mail.spacaex.com 103.253.40.233, 49767, 587 TELE-ASTeleAsiaLimitedHK Hong Kong SAR China 21->33 35 checkip.dyndns.com 193.122.6.168, 49765, 80 ORACLE-BMC-31898-OracleCorporationUS Germany 21->35 37 reallyfreegeoip.org 104.21.67.152, 443, 49766 CLOUDFLARENET-CloudflareIncUS Canada 21->37 51 Creates an undocumented autostart registry key 21->51 53 Tries to harvest and steal browser information (history, passwords, etc) 21->53 signatures13
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d/
Threat name:
Script-JS.Downloader.RemcosRAT
Create hunting rule
Status:
Malicious
First seen:
2026-08-04 03:16:34 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 24 (33.33%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zhx66n2etiiuercrbaimrrow72zf2jgrmp5rnkvy5iswrlycc4oq._file
Verdict:
malicious
Label(s):
NovaStealer
Create hunting rule
Link:
https://reports.threatray.com/b6cbeb19-c37e-46ea-8e4b-d9785a61bb2e
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution persistence spyware stealer
Link:
https://tria.ge/reports/260804-k8rbkagf94/
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.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c9efef37449a114244510810c8c5d6feb25d24d163fb16aab8ea2568af02171d

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb

File information

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

Comments