MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6bb2f555edca2bc8b12c33f65b84d05a570043de008ec8d9a31a6b4952f01d02. 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 File information Comments

SHA256 hash: 6bb2f555edca2bc8b12c33f65b84d05a570043de008ec8d9a31a6b4952f01d02
SHA3-384 hash: 8ba4f1666ff5b43ef817768bd335909534081d47d278de2016de54c6b05bf0bc7036a0b222fafb0fc517a858f14d9ff5
SHA1 hash: e44567fae1e531773e88df06a01ac351a112b674
MD5 hash: acfd55595de5fdc8334a9b5cf4f854f1
humanhash: rugby-august-golf-chicken
File name:Indskrnkende.vbs
Download: download sample
Signature GuLoader
File size:437'463 bytes
First seen:2023-10-10 11:27:45 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 6144:Eajex3ZP0Hc1AhmiGWlkB4d4V/fGTTYVniYRY5Zjzc2sXo+F7xZ/tualJF1A:PeT081ubGVGawZYRlFA
Threatray 508 similar samples on MalwareBazaar
TLSH T1EE945CB1EF98151A0C4B37EAEC414D81C5BDC16A5927006AFFDD17CEA10B59CA3BDB09
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence


File Origin
# of uploads :
1
# of downloads :
104
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
MALICIOUS
Details
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Result
Threat name:
AgentTesla, GuLoader
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Maps a DLL or memory area into another process
Obfuscated command line found
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
VBScript performs obfuscated calls to suspicious functions
Very long command line found
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1322831 Sample: Indskrnkende.vbs Startdate: 10/10/2023 Architecture: WINDOWS Score: 100 24 bramsec.pl 2->24 26 mail.bramsec.pl 2->26 28 5 other IPs or domains 2->28 36 Snort IDS alert for network traffic 2->36 38 Yara detected GuLoader 2->38 40 Yara detected AgentTesla 2->40 9 wscript.exe 2->9         started        signatures3 process4 signatures5 50 VBScript performs obfuscated calls to suspicious functions 9->50 52 Suspicious powershell command line found 9->52 54 Wscript starts Powershell (via cmd or directly) 9->54 56 2 other signatures 9->56 12 powershell.exe 8 9->12         started        process6 signatures7 58 Suspicious powershell command line found 12->58 60 Obfuscated command line found 12->60 62 Very long command line found 12->62 15 powershell.exe 23 12->15         started        18 conhost.exe 12->18         started        process8 signatures9 64 Writes to foreign memory regions 15->64 66 Maps a DLL or memory area into another process 15->66 68 Found suspicious powershell code related to unpacking or dynamic code loading 15->68 70 Hides threads from debuggers 15->70 20 CasPol.exe 15 10 15->20         started        process10 dnsIp11 30 bramsec.pl 128.204.218.95, 49729, 587 ECO-ATMAN-PLECO-ATMAN-PL Poland 20->30 32 api4.ipify.org 173.231.16.77, 443, 49728 WEBNXUS United States 20->32 34 2 other IPs or domains 20->34 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->42 44 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 20->44 46 Tries to steal Mail credentials (via file / registry access) 20->46 48 2 other signatures 20->48 signatures12
Threat name:
Win32.Dropper.Generic
Status:
Suspicious
First seen:
2023-10-10 11:28:05 UTC
File Type:
Text (VBS)
AV detection:
3 of 23 (13.04%)
Threat level:
  3/5
Result
Malware family:
guloader
Score:
  10/10
Tags:
family:guloader downloader
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Blocklisted process makes network request
Guloader,Cloudeye
Please note that we are no longer able to provide a coverage score for Virus Total.

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 6bb2f555edca2bc8b12c33f65b84d05a570043de008ec8d9a31a6b4952f01d02

(this sample)

  
Delivery method
Distributed via e-mail attachment

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