MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f958e4ed4aeeb30bdff566e749d1f0974e8a2d01cd3782eae9134c85f39b4f0f. 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


GuLoader


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f958e4ed4aeeb30bdff566e749d1f0974e8a2d01cd3782eae9134c85f39b4f0f
SHA3-384 hash: df54740741ed2dca392fe9cde7beb9f2277e28045bcfeee50994c9443042aac17c00027ed5dd21ac9a4146d6b26ba6fb
SHA1 hash: 56480471ef7100f4ce57448a5ed3ba87e02fd2a0
MD5 hash: 6e4f2053d16d4a11c55f5fd13555f512
humanhash: purple-glucose-lion-bulldog
File name:PO.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:171'483 bytes
First seen:2022-08-16 12:31:35 UTC
Last seen:2022-08-17 12:33:25 UTC
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 3072:aNR/rFtKDSxBcT8cjHoS7G/rEwst5GTsgEZnsW:ERTFMSx28nkaows+Ex
TLSH T1A9F33F209FF0353F2E56F02B0B8A6A3ED179345E045E3037A4E3A54F4D66A1529D9F2E
Reporter lowmal3
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
9
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/299004/
Detection(s):
SecuriteInfo.com.VBS.Obfus-184.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.VBS.Obfus-185.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm obfuscated sload
Link:
https://www.filescan.io/uploads/62fb8e84f5935cafacfb0875/reports/8d9d6fd5-48d4-456b-8360-4f64fcd6817f/overview
Result
Verdict:
MALICIOUS
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1052276
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Encrypted powershell cmdline option found
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Potential malicious VBS script found (suspicious strings)
Tries to detect Any.run
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Wscript starts Powershell (via cmd or directly)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 684792 Sample: PO.vbs Startdate: 16/08/2022 Architecture: WINDOWS Score: 100 32 www.belaaitiane.xyz 2->32 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 6 other signatures 2->46 9 wscript.exe 1 1 2->9         started        signatures3 process4 signatures5 48 VBScript performs obfuscated calls to suspicious functions 9->48 50 Wscript starts Powershell (via cmd or directly) 9->50 52 Very long command line found 9->52 54 Encrypted powershell cmdline option found 9->54 12 powershell.exe 27 9->12         started        process6 signatures7 56 Tries to detect Any.run 12->56 15 ieinstal.exe 6 12->15         started        19 csc.exe 3 12->19         started        22 conhost.exe 12->22         started        24 2 other processes 12->24 process8 dnsIp9 34 101.99.94.169, 49857, 80 SHINJIRU-MY-AS-APShinjiruTechnologySdnBhdMY Malaysia 15->34 36 Tries to detect Any.run 15->36 38 Maps a DLL or memory area into another process 15->38 26 explorer.exe 15->26 injected 30 C:\Users\user\AppData\Local\...\jjjn1dtn.dll, PE32 19->30 dropped 28 cvtres.exe 1 19->28         started        file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f958e4ed4aeeb30bdff566e749d1f0974e8a2d01cd3782eae9134c85f39b4f0f/
Threat name:
Script-WScript.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2022-08-16 11:45:21 UTC
File Type:
Text (VBS)
AV detection:
12 of 26 (46.15%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7fmoj3kk52zqxx7vm3tutupqs5hiulibzu3yf2xjcngil443j4hq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cloudeye
Create hunting rule
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader
Link:
https://tria.ge/reports/220816-pqlqksbha6/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks QEMU agent file
Checks computer location settings
Guloader,Cloudeye
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/f958e4ed4aeeb30bdff566e749d1f0974e8a2d01cd3782eae9134c85f39b4f0f

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_VBScript
Create hunting rule
Author:Ankit Anubhav - ankitanubhav.info
Description:Detects GuLoader/CloudEye VBScripts

File information

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

Malspam

GuLoader

Visual Basic Script (vbs) vbs f958e4ed4aeeb30bdff566e749d1f0974e8a2d01cd3782eae9134c85f39b4f0f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/299004/

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