MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913. 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


Latrodectus


Vendor detections: 9


Intelligence 9 IOCs YARA 7 File information Comments
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SHA256 hash: 937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913
SHA3-384 hash: fee3afd959cd1b7c63f3f2bd2cd2e131d70b0bdd0d4924539400a665b38e88b47778ec2689a4d52a925d125eb336c5d6
SHA1 hash: 67bb21c9665fc12d8dc6ef2ac775c3f6274bd0ed
MD5 hash: 6682dc1281579bd8789a8d2c09ca4251
humanhash: colorado-stairway-bulldog-whiskey
File name:Form_W-9_Ver-083_030913350-67084228u8857-460102.js
Download: download sample
Signature Latrodectus
Create hunting rule
File size:479'083 bytes
First seen:2024-05-10 22:02:33 UTC
Last seen:2024-11-03 08:56:07 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 6144:I/sTY54eD0MDV96cPh7siYttNfIR3zKEyX90q+jTEkyZxUwwkykmQmByuPatD/ey:8uu96FjIR3MN24Uk1
TLSH T13EA46C60FF4502661E83579F9C6226D2FD2CC21193022228E99E539D1F875D8D3ADBBF
Reporter pr0xylife
Tags:BazaLoader BruteRatel js Latrodectus LUNAR SPIDER

Intelligence

File Origin
# of uploads :
2
# of downloads :
437
Origin country :
DE DE
Vendor Threat Intelligence
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
evasive lolbin remote shell32
Link:
https://www.filescan.io/uploads/663e99971c9796b80aba661c/reports/767fe727-dd25-45c8-bdca-9d78313f3099/overview
Verdict:
Malicious
Labled as:
Trojan.Cryxos.JS
Link:
https://www.hybrid-analysis.com/sample/937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913
Result
Threat name:
Bazar Loader, BruteRatel, Latrodectus
Create hunting rule
Detection:
malicious
Classification:
evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1439881
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to inject threads in other processes
Creates a thread in another existing process (thread injection)
Drops executables to the windows directory (C:\Windows) and starts them
Found malware configuration
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
JavaScript file contains Antivirus product strings
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sets debug register (to hijack the execution of another thread)
Sigma detected: RunDLL32 Spawning Explorer
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Yara detected Bazar Loader
Yara detected BruteRatel
Yara detected Generic JS Downloader
Yara detected Latrodectus
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1439881 Sample: Form_W-9_Ver-083_030913350-... Startdate: 11/05/2024 Architecture: WINDOWS Score: 100 46 workspacin.cloud 2->46 48 uncertain-kitten-gw.aws-euc1.cloud-ara.tyk.io 2->48 50 10 other IPs or domains 2->50 82 Found malware configuration 2->82 84 Multi AV Scanner detection for dropped file 2->84 86 Multi AV Scanner detection for submitted file 2->86 88 9 other signatures 2->88 11 msiexec.exe 14 29 2->11         started        16 wscript.exe 2 2->16         started        signatures3 process4 dnsIp5 62 91.194.11.64, 49702, 80 HQservCommunicationSolutionsIL Russian Federation 11->62 38 C:\Windows\Installer\MSID886.tmp, PE32 11->38 dropped 40 C:\Windows\Installer\MSID7B9.tmp, PE32 11->40 dropped 42 C:\Windows\Installer\MSID798.tmp, PE32 11->42 dropped 44 3 other malicious files 11->44 dropped 98 Drops executables to the windows directory (C:\Windows) and starts them 11->98 18 MSID886.tmp 1 11->18         started        20 msiexec.exe 11->20         started        file6 signatures7 process8 process9 22 rundll32.exe 18->22         started        process10 24 rundll32.exe 1 12 22->24         started        dnsIp11 56 altynbe.com 138.124.183.215, 443, 49717, 49722 NOKIA-ASFI Norway 24->56 58 anikvan.com 95.164.68.73, 443, 49720, 49721 NASSIST-ASGI Gibraltar 24->58 60 3 other IPs or domains 24->60 90 Contains functionality to inject threads in other processes 24->90 92 Injects code into the Windows Explorer (explorer.exe) 24->92 94 Sets debug register (to hijack the execution of another thread) 24->94 96 5 other signatures 24->96 28 explorer.exe 72 2 24->28 injected signatures12 process13 dnsIp14 64 workspacin.cloud 104.21.16.155, 443, 49790, 49803 CLOUDFLARENETUS United States 28->64 66 illoskanawer.com 172.67.195.126, 443, 49794, 49799 CLOUDFLARENETUS United States 28->66 100 System process connects to network (likely due to code injection or exploit) 28->100 32 rundll32.exe 28->32         started        35 rundll32.exe 12 28->35         started        signatures15 process16 dnsIp17 68 System process connects to network (likely due to code injection or exploit) 32->68 70 Injects code into the Windows Explorer (explorer.exe) 32->70 72 Writes to foreign memory regions 32->72 74 Injects a PE file into a foreign processes 32->74 52 54.175.181.104, 443, 49821, 49829 AMAZON-AESUS United States 35->52 54 ae97372e4f96e4d1299fbaeb7130b656-1584023256.us-east-1.elb.amazonaws.com 54.159.36.188, 443, 49715, 49729 AMAZON-AESUS United States 35->54 76 Allocates memory in foreign processes 35->76 78 Modifies the context of a thread in another process (thread injection) 35->78 80 Creates a thread in another existing process (thread injection) 35->80 signatures18
Score:
43%
Verdict:
Susipicious
File Type:
SCRIPT
Link:
https://malprob.io/report/937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913/
Threat name:
Script-JS.Trojan.Latrodectus
Create hunting rule
Status:
Malicious
First seen:
2024-05-09 16:35:18 UTC
File Type:
Text (Batch)
AV detection:
13 of 37 (35.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sn6qoi44x7xc2nfx6h5ooyvmok2s7mvxcduh4ax2owhukkvgfejq._file
Result
Malware family:
latrodectus
Create hunting rule
Score:
  10/10
Tags:
family:latrodectus execution loader persistence
Link:
https://tria.ge/reports/240510-1yb2wscb8t/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: JavaScript
Drops file in Windows directory
Adds Run key to start application
Enumerates connected drives
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Detect larodectus Loader variant 2
Latrodectus loader
Malware Config
C2 Extraction:
https://workspacin.cloud/live/
https://illoskanawer.com/live/
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/937d07239cbfee2d34b7f1fae762ac72b52fb2b710e87e02fa758f452aa62913

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:GuLoader
Create hunting rule
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:unknown_dropper
Create hunting rule
Author:#evilcel3ri
Description:Detects an unknown dropper
Rule name:Windows_Trojan_BruteRatel_4110d879
Create hunting rule
Author:Elastic Security
Rule name:win_bazarbackdoor_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.bazarbackdoor.

File information

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

Comments