MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b67b82d1e558e2f16155e9b3cff497ebd257a7793df3f51f411fa5e378b11387. 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


STRRAT


Vendor detections: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b67b82d1e558e2f16155e9b3cff497ebd257a7793df3f51f411fa5e378b11387
SHA3-384 hash: f42e99ea446a77aef51121d40493d270a73932d972672f611c259e1d89958e96acfadca35bc123080e58b695472d9740
SHA1 hash: eb13d2291b7f7810aaf9523b632347c2177ec68f
MD5 hash: 072e8428b6aa53d57aa524744e21e810
humanhash: december-cold-magazine-finch
File name:PO98765432docirb.js
Download: download sample
Signature STRRAT
Create hunting rule
File size:366'476 bytes
First seen:2023-05-17 07:15:14 UTC
Last seen:2023-05-17 20:49:31 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 6144:wCVaJUwwRPh/u4W5+7wK8wLzTgsSRsXgdi0a5Elh5GS9ONlM56jQKwHtCuDFzkA1:qmPhux56z8ssmeh5GS+VQHJQzS1
TLSH T1477449D965440E67F6F97000268F3732EB64FE1CB25C55EBA26ADF6E691360C1807ACC
Reporter abuse_ch
Tags:js STRRAT


Avatar
abuse_ch
STRRAT C2:
103.212.81.155:8261

Intelligence

File Origin
# of uploads :
2
# of downloads :
294
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.29010.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
nemucod strrat
Link:
https://www.filescan.io/uploads/64647f333102425a10e18b9d/reports/fe1fa7a8-9e60-4057-ae55-1c63846dd244/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/b67b82d1e558e2f16155e9b3cff497ebd257a7793df3f51f411fa5e378b11387
Result
Threat name:
RATDispenser, STRRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1235011
Signature
Antivirus detection for URL or domain
Found malware configuration
JavaScript source code contains call to eval containing suspicious API calls
JavaScript source code contains functionality to generate code involving a shell, file or stream
JScript performs obfuscated calls to suspicious functions
Multi AV Scanner detection for submitted file
Yara detected RATDispenser
Yara detected STRRAT
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b67b82d1e558e2f16155e9b3cff497ebd257a7793df3f51f411fa5e378b11387/
Threat name:
Script-JS.Trojan.Cryxos
Create hunting rule
Status:
Malicious
First seen:
2023-05-17 00:26:36 UTC
File Type:
Text (JavaScript)
AV detection:
7 of 37 (18.92%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wz5yfupfldrpcykv5gz475ex5pjfpj3zhxz7kh2bd6s6g6frcodq._file
Result
Malware family:
strrat
Create hunting rule
Score:
  10/10
Tags:
family:strrat persistence stealer trojan
Link:
https://tria.ge/reports/230517-h3slbsea97/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Loads dropped DLL
STRRAT
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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:js_ratdispenser
Create hunting rule
Author:HP Threat Research @HPSecurity
Description:JavaScript downloader resp. dropper delivering various RATs

File information

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

Comments