MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b93bbc617853cb3a51a28cd663bc45b9d01c49d99f567ef8f4c5d4522ce4647b. 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: 6


Intelligence 6 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b93bbc617853cb3a51a28cd663bc45b9d01c49d99f567ef8f4c5d4522ce4647b
SHA3-384 hash: 87144fecf3f55fe319e2a98c53ab6ddbb7fb7f0d4938535c6de258401e354d3edc312079097808eb695891b6f7b0db57
SHA1 hash: 7334aa42b98337e9ed6a1d7073128a30413eae00
MD5 hash: 7ec2b262a7a517fb8a5b561da9f113da
humanhash: maryland-mike-beer-hydrogen
File name:doc_19837_3336272022.pdf.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:131'518 bytes
First seen:2022-06-27 08:15:19 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:XKi9zqKe7zvLp101s8l1okCrqOWqmm55GWMQ5/dECkHMuDiz8apV4NIj0ZEoVO:hXeDqBCsqf55GW95qO06
TLSH T124D3E8C4386580F1F800B219B605F6DE9F30F95BDDDC6468BBB3E7080F5602989DA6AD
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/283456/
Result
Verdict:
UNKNOWN
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1020218
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Very long command line found
Writes to foreign memory regions
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: 652711 Sample: doc_19837_3336272022.pdf.vbs Startdate: 27/06/2022 Architecture: WINDOWS Score: 100 57 vegproworld.com 2->57 59 qp7gja.dm.files.1drv.com 2->59 61 4 other IPs or domains 2->61 77 Multi AV Scanner detection for domain / URL 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for URL or domain 2->81 83 7 other signatures 2->83 12 wscript.exe 1 1 2->12         started        signatures3 process4 signatures5 95 Wscript starts Powershell (via cmd or directly) 12->95 97 Very long command line found 12->97 99 Encrypted powershell cmdline option found 12->99 15 powershell.exe 27 12->15         started        process6 signatures7 101 Tries to detect Any.run 15->101 18 ieinstal.exe 3 8 15->18         started        22 csc.exe 3 15->22         started        25 conhost.exe 15->25         started        process8 dnsIp9 63 vegproworld.com 148.66.138.165, 49747, 80 AS-26496-GO-DADDY-COM-LLCUS Singapore 18->63 65 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49749 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->65 67 l-0004.l-dc-msedge.net 13.107.43.13, 443, 49748 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->67 85 Modifies the context of a thread in another process (thread injection) 18->85 87 Tries to detect Any.run 18->87 89 Maps a DLL or memory area into another process 18->89 91 2 other signatures 18->91 27 explorer.exe 4 18->27 injected 29 wscript.exe 18->29         started        53 C:\Users\user\AppData\Local\...\c2mbhke2.dll, PE32 22->53 dropped 31 cvtres.exe 1 22->31         started        file10 signatures11 process12 process13 33 systray.exe 1 18 27->33         started        37 ieinstal.exe 27->37         started        39 ieinstal.exe 27->39         started        file14 49 C:\Users\user\AppData\...\6LMlogrv.ini, data 33->49 dropped 51 C:\Users\user\AppData\...\6LMlogri.ini, data 33->51 dropped 69 Detected FormBook malware 33->69 71 Tries to steal Mail credentials (via file / registry access) 33->71 73 Tries to harvest and steal browser information (history, passwords, etc) 33->73 75 4 other signatures 33->75 41 cmd.exe 2 33->41         started        44 firefox.exe 1 33->44         started        signatures15 process16 file17 93 Tries to harvest and steal browser information (history, passwords, etc) 41->93 47 conhost.exe 41->47         started        55 C:\Users\user\AppData\...\6LMlogrf.ini, data 44->55 dropped signatures18 process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b93bbc617853cb3a51a28cd663bc45b9d01c49d99f567ef8f4c5d4522ce4647b/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xe53yylykpftuuncrtlghpcfxhibysozt5lh56huyxkfelhemr5q._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/220627-j55jcabga2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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:
Suspicious File
Score:
0.60
Link:
https://yomi.yoroi.company/submissions/b93bbc617853cb3a51a28cd663bc45b9d01c49d99f567ef8f4c5d4522ce4647b

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:SUSP_VBS_in_ISO
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects ISO files that contain VBS functions
Reference:Internal Research

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 b93bbc617853cb3a51a28cd663bc45b9d01c49d99f567ef8f4c5d4522ce4647b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/283456/

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