MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e. 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


SilentBuilder


Vendor detections: 11


Maldoc score: 3


Intelligence 11 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e
SHA3-384 hash: c966f171c419d15effd52f4b972c265ab21287815879f5327c28b5b47c028002770703d90570eafb45c31e48f90fd858
SHA1 hash: 57e43349e23f8576089a27274eaedca531ea74e5
MD5 hash: b735b556d09f9aa028abcb5e4013580a
humanhash: oxygen-batman-connecticut-hot
File name:b735b556d09f9aa028abcb5e4013580a
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:115'712 bytes
First seen:2022-01-12 04:50:13 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 3072:RKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgKFyVEdBU6hubsll6UQjvx5:RKpb8rGYrMPe3q7Q0XV5xtuEsi8/dg2w
TLSH T104B3BF9AB21F8859EA658B3048D743AA7727EC314F2E43872615B3227FFC8D04B1355B
Reporter zbetcheckin
Tags:excel SilentBuilder xlsx

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 3
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
3104991 bytesWorkbook
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecAuto_OpenRuns when the Excel Workbook is opened
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
182
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b735b556d09f9aa028abcb5e4013580a
Verdict:
Malicious activity
Analysis date:
2022-01-12 04:52:46 UTC
Tags:
macros loader
Link:
https://app.any.run/tasks/33fb5fa2-9e19-4d64-a74b-58694044d1d6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/218493/
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.BITSADMIN.EXE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.URLDOWNLOADTOFILE.200415.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4Macro.HiddenSheetDLWAKEUP.20200310.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file
Creating a process with a hidden window
Launching a process
Moving a recently created file
Sending a custom TCP request
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e/results/dashboard
Payload URLs
URL
File name
http://ordinateur.ogivart.us/editor/Qpo7OAOnbe/
WorkBook
Document image
Image:
Download PNG
Document image
Gathering data
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/918896
Signature
Antivirus detection for URL or domain
Document contains OLE streams with names of living off the land binaries
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Drops PE files to the user root directory
Found Excel 4.0 Macro with suspicious formulas
Found malicious Excel 4.0 Macro
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
System process connects to network (likely due to code injection or exploit)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 551374 Sample: TlN0SXFTRQ Startdate: 12/01/2022 Architecture: WINDOWS Score: 100 49 Multi AV Scanner detection for domain / URL 2->49 51 Antivirus detection for URL or domain 2->51 53 Multi AV Scanner detection for submitted file 2->53 55 10 other signatures 2->55 11 EXCEL.EXE 7 18 2->11         started        16 svchost.exe 2->16         started        process3 dnsIp4 43 ordinateur.ogivart.us 162.215.211.179, 49167, 80 UNIFIEDLAYER-AS-1US United States 11->43 37 C:\Users\user\sun.ocx, PE32 11->37 dropped 39 C:\Users\user\AppData\...\5g8osUr0is[1].dll, PE32 11->39 dropped 41 C:\Users\user\Desktop\TlN0SXFTRQ.xls, Composite 11->41 dropped 61 Document exploit detected (creates forbidden files) 11->61 63 Document exploit detected (UrlDownloadToFile) 11->63 18 rundll32.exe 11->18         started        file5 signatures6 process7 process8 20 rundll32.exe 2 18->20         started        file9 35 C:\Windows\SysWOW64\...\lsddzqc.jqz (copy), PE32 20->35 dropped 57 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->57 24 rundll32.exe 20->24         started        signatures10 process11 process12 26 rundll32.exe 1 24->26         started        signatures13 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->59 29 rundll32.exe 26->29         started        process14 process15 31 rundll32.exe 2 29->31         started        dnsIp16 45 131.100.24.231, 49168, 80 GOPLEXTELECOMUNICACOESEINTERNETLTDA-MEBR Brazil 31->45 47 System process connects to network (likely due to code injection or exploit) 31->47 signatures17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e/
Threat name:
Document-Office.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-01-12 04:51:10 UTC
File Type:
Document
Extracted files:
8
AV detection:
12 of 43 (27.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rokn22oknzppwlmlwjqiptvwtgm634r5tkb7c7zltbrius2mhq7a._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet banker macro trojan xlm
Link:
https://tria.ge/reports/220112-fgtv6abbf6/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in System32 directory
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://ordinateur.ogivart.us/editor/Qpo7OAOnbe/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8b94dd69ca6e/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/8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e

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:Excel_Hidden_Macro_Sheet
Create hunting rule
Rule name:Qbot
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot
Rule name:SUSP_Excel4Macro_AutoOpen
Create hunting rule
Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close

File information

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

Web download

SilentBuilder

Excel file xlsx 8b94dd69ca6e5efb2d8bb26087ceb69999edf23d9a83f17f2b98628a4b4c3c3e

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1967231/
  
URLhaus
https://urlhaus.abuse.ch/url/1964891/
Cape
Cape
https://www.capesandbox.com/analysis/218493/
  
URLhaus
https://urlhaus.abuse.ch/url/1967127/
  
URLhaus
https://urlhaus.abuse.ch/url/1967121/
  
URLhaus
https://urlhaus.abuse.ch/url/1966394/
  
URLhaus
https://urlhaus.abuse.ch/url/1964778/
  
URLhaus
https://urlhaus.abuse.ch/url/1968383/
  
URLhaus
https://urlhaus.abuse.ch/url/1967010/
  
URLhaus
https://urlhaus.abuse.ch/url/1969284/

Comments


Avatar
zbet commented on 2022-01-12 04:50:15 UTC

url : hxxp://3demon.biz/2fh0g/RVdtno_386567/?i=1