MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5aa82085d0e21dfe6198f58076142c8e80e253b8575ab2723918bb4a9915cd79. 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: 12


Maldoc score: 4


Intelligence 12 IOCs YARA 3 File information Comments

SHA256 hash: 5aa82085d0e21dfe6198f58076142c8e80e253b8575ab2723918bb4a9915cd79
SHA3-384 hash: c93c915fa6655956709f03b680b2a4695cc01feb90c13fea1f8129f4d97b7b398c7ea58866c5d06b77d2611987502e53
SHA1 hash: f48e583f542d64e0930bd6011d7a7ca63bd2434a
MD5 hash: 5c493563c7c87cb96eee7077a179b2cf
humanhash: massachusetts-four-fillet-uranus
File name:Telux.com_Swift_03_06_2022.xls
Download: download sample
Signature SilentBuilder
File size:72'210 bytes
First seen:2022-06-03 15:01:01 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+D+hDcnTLiQrRTZws8Ea:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM9
TLSH T1E5634B59B769C85EE9198B3088F747D62323FD308B5F0A433259F3926FB99905703A1B
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter lowmal3
Tags:SilentBuilder xls

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: 4
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
361860 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
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence


File Origin
# of uploads :
1
# of downloads :
634
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Telux.com_Swift_03_06_2022.xls
Verdict:
Malicious activity
Analysis date:
2022-06-03 15:04:56 UTC
Tags:
macros loader

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
DNS request
Creating a file
Creating a process with a hidden window
Launching a process
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Payload URLs
URL
File name
www.boucherie-thollas.com
WorkBook
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe greyware macros macros-on-open packed regsvr32
Label:
Malicious
Suspicious Score:
5.4/10
Score Malicious:
54%
Score Benign:
46%
Result
Verdict:
MALICIOUS
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
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
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
Behaviour
Behavior Graph:
Threat name:
Document-Excel.Trojan.Abracadabra
Status:
Malicious
First seen:
2022-06-03 15:02:05 UTC
File Type:
Document
Extracted files:
10
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro xlm
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Downloads MZ/PE file
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://www.boucherie-thollas.com/wp-content/Q/
http://www.wenne24.keurigonline52.nl/cgi-bin/FsHQ3ndkZb/
http://www.supersanmutfak.com/Template/fMh7nu/
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:Qbot
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot
Rule name:SUSP_Excel4Macro_AutoOpen
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.

Malspam

SilentBuilder

Excel file xls 5aa82085d0e21dfe6198f58076142c8e80e253b8575ab2723918bb4a9915cd79

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments