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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 15f8a8dd265db3185f7113d504469889e7ec76e75711cd9a78105dda32e4bde8. 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


Vjw0rm


Vendor detections: 7


Intelligence 7 IOCs 2 YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 15f8a8dd265db3185f7113d504469889e7ec76e75711cd9a78105dda32e4bde8
SHA3-384 hash: 3e413258f4407902891d4bc3d08ef3c23a19816fc8d38eb3f2a8c6ca63806474431a54761e09d4647935fedd8e636c3a
SHA1 hash: d5e8027644eb1c2815c30ea807dcc717e5f1d039
MD5 hash: f23260abcdc69f3472cef109069abf86
humanhash: fix-robin-minnesota-juliet
File name:Carrier Rate Confirmation.js
Download: download sample
Signature Vjw0rm
Create hunting rule
File size:42'692 bytes
First seen:2022-09-25 16:30:50 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 768:hy/pGPc1HUHy9d/UmFo1aFuFDpi8DaqspSLm0Sakaj86L:hqEPcxUSf/Umm120Dpi8Daim0SalX
TLSH T136136F69C8770BA49F942A060BF8EE2D2F7D7C8E657259BE7A01458C43A503F60681FC
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://labutorutg.duckdns.org:8256/is-ready

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://labutorutg.duckdns.org:8256/is-ready https://threatfox.abuse.ch/ioc/851600/
64.42.179.67:8256 https://threatfox.abuse.ch/ioc/851601/

Intelligence

File Origin
# of uploads :
1
# of downloads :
288
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.JS.Obfus-2221.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm evasive obfuscated wscript.exe
Link:
https://www.filescan.io/uploads/633082c43c00655b268ef2ca/reports/d6bef7f6-ffd7-408b-bb17-e04125a12924/overview
Result
Threat name:
WSHRat, VjW0rm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1076917
Signature
Detected WSHRat
Drops script or batch files to the startup folder
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 domain / URL
Multi AV Scanner detection for submitted file
Potential malicious VBS/JS script found (suspicious encoded strings)
Potential obfuscated javascript found
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Drops script at startup location
Sigma detected: Register Wscript In Run Key
Sigma detected: VjW0rm
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
Uses known network protocols on non-standard ports
Wscript called in batch mode (surpress errors)
Yara detected VjW0rm
Yara detected WSHRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 709459 Sample: Carrier Rate Confirmation.js Startdate: 25/09/2022 Architecture: WINDOWS Score: 100 57 Sigma detected: Register Wscript In Run Key 2->57 59 Snort IDS alert for network traffic 2->59 61 Multi AV Scanner detection for domain / URL 2->61 63 11 other signatures 2->63 7 wscript.exe 3 6 2->7         started        11 wscript.exe 2 2->11         started        13 wscript.exe 12 2->13         started        16 3 other processes 2->16 process3 dnsIp4 37 C:\Users\user\AppData\Roaming\bwAxfzODKN.js, ASCII 7->37 dropped 39 Carrier Rate Confi....js:Zone.Identifier, ASCII 7->39 dropped 41 C:\Users\...\Carrier Rate Confirmation.js, ASCII 7->41 dropped 43 2 other malicious files 7->43 dropped 69 System process connects to network (likely due to code injection or exploit) 7->69 71 Detected WSHRat 7->71 73 JScript performs obfuscated calls to suspicious functions 7->73 77 2 other signatures 7->77 18 wscript.exe 8 7->18         started        22 wscript.exe 1 13 7->22         started        75 Wscript called in batch mode (surpress errors) 11->75 25 wscript.exe 11->25         started        27 wscript.exe 11->27         started        49 javaautorun.duia.ro 13->49 file5 signatures6 process7 dnsIp8 45 labutorutg.duckdns.org 64.42.179.67, 49716, 49720, 49723 DEDICATEDUS United States 18->45 29 wscript.exe 18->29         started        47 javaautorun.duia.ro 41.217.38.90, 5433 SpectranetNG Nigeria 22->47 35 C:\Users\user\AppData\...\bwAxfzODKN.js, ASCII 22->35 dropped 65 System process connects to network (likely due to code injection or exploit) 25->65 67 Wscript called in batch mode (surpress errors) 25->67 32 wscript.exe 25->32         started        file9 signatures10 process11 dnsIp12 51 javaautorun.duia.ro 29->51 53 javaautorun.duia.ro 32->53 55 System process connects to network (likely due to code injection or exploit) 32->55 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/15f8a8dd265db3185f7113d504469889e7ec76e75711cd9a78105dda32e4bde8/
Threat name:
Script-JS.Trojan.Vjw0rm
Create hunting rule
Status:
Malicious
First seen:
2022-09-25 14:03:32 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 40 (22.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=cx4krxjglwzrqx3rcpkqiruyrht6y5xhk4i43gtycbo5umxexxua._file
Result
Malware family:
wshrat
Create hunting rule
Score:
  10/10
Tags:
family:vjw0rm family:wshrat persistence trojan worm
Link:
https://tria.ge/reports/220925-t1c9eagehr/
Behaviour
Script User-Agent
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Drops startup file
Blocklisted process makes network request
Vjw0rm
WSHRAT
Malware Config
C2 Extraction:
http://labutorutg.duckdns.org:8256
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/15f8a8dd265d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.64
Link:
https://yomi.yoroi.company/submissions/15f8a8dd265db3185f7113d504469889e7ec76e75711cd9a78105dda32e4bde8

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

File information

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

Comments