MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb4448681b6444ddaec4ad1ed24a722e38125bdad0098899acf1196d70e5abca. 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: 7


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

SHA256 hash: bb4448681b6444ddaec4ad1ed24a722e38125bdad0098899acf1196d70e5abca
SHA3-384 hash: 044bc43c5cfa1aa10504ee2ddb396350c0179b3ef6c1be01fc8e556c097a31a0fde136fae6b7bd63dfddc77689a22722
SHA1 hash: 2e792a2beae60e163253226b01a91aa10221590e
MD5 hash: 05e5ce66de0c965be99bf94e06b47be4
humanhash: echo-butter-india-texas
File name:doc_995007788294-72556097609.pdf.vbs
Download: download sample
Signature GuLoader
Create hunting rule
File size:125'343 bytes
First seen:2022-06-09 06:21:58 UTC
Last seen:Never
File type:Visual Basic Script (vbs) vbs
MIME type:text/plain
ssdeep 1536:4eN4xHAVbo6Y8/iZjw/BktoVyQImvaCUqtNcNbMzs4Zk8XGcZ0BYkQCl1LISr9C:UA6kso2BRZIB
TLSH T1E9C308E5B9370091F90E348A7C10FD878EB5796B2FEC00B7E7BA2A444716275B28576C
Reporter abuse_ch
Tags:GuLoader vbs

Intelligence

File Origin
# of uploads :
1
# of downloads :
222
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/278055/
Detection(s):
SecuriteInfo.com.VBS.Agent.AOGEldorado.15149.32418.UNOFFICIAL
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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/1009729
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
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect Any.run
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: 642219 Sample: doc_995007788294-7255609760... Startdate: 09/06/2022 Architecture: WINDOWS Score: 100 57 vegproworld.com 2->57 59 q3ptug.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, 49786, 80 AS-26496-GO-DADDY-COM-LLCUS Singapore 18->63 65 l-0003.l-dc-msedge.net 13.107.43.12, 443, 49789 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->65 67 l-0004.l-dc-msedge.net 13.107.43.13, 443, 49788 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 6 18->27 injected 29 wscript.exe 18->29         started        53 C:\Users\user\AppData\Local\...\rgczagwp.dll, PE32 22->53 dropped 31 cvtres.exe 1 22->31         started        file10 signatures11 process12 process13 33 cscript.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 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/bb4448681b6444ddaec4ad1ed24a722e38125bdad0098899acf1196d70e5abca/
Threat name:
Script-WScript.Downloader.SLoad
Create hunting rule
Status:
Malicious
First seen:
2022-06-09 04:56:43 UTC
File Type:
Text (VBS)
AV detection:
10 of 26 (38.46%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xnceq2a3mrcn3lwevupnestsfy4bew622aeyrgnm6emw24hfvpfa._file
Verdict:
malicious
Label(s):
formbook
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cloudeye
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Result
Malware family:
guloader
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Score:
  10/10
Tags:
family:formbook family:guloader campaign:sue8 downloader persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/220609-g4ynasgbck/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
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
Adds Run key to start application
Checks QEMU agent file
Checks computer location settings
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook
Guloader,Cloudeye
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb4448681b64/report/overview.html
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/bb4448681b6444ddaec4ad1ed24a722e38125bdad0098899acf1196d70e5abca

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 bb4448681b6444ddaec4ad1ed24a722e38125bdad0098899acf1196d70e5abca

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/278055/

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