MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 76b9a531e2e41474dae479ca56e9611376cf3eced4e2d2ac78ee973eaed33a51. 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: 5


Intelligence 5 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 76b9a531e2e41474dae479ca56e9611376cf3eced4e2d2ac78ee973eaed33a51
SHA3-384 hash: 6006db577ad65e54b8cb5ceaa15bf585b8cacea52be3293b13109f05121b929a240d353f18d4f74800265c2451114cc4
SHA1 hash: c49453878512c45f87fbd709a02455081076f2f6
MD5 hash: b37a22ae636d0f5c8463c17162b97b72
humanhash: eleven-equal-alabama-cold
File name:contract_2815_2_claim-11.zip
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:283'734 bytes
First seen:2020-12-18 17:00:49 UTC
Last seen:Never
File type: zip
MIME type:application/zip
ssdeep 6144:f6VWs/F7qycRYDlGgVbyBQeErpBPJiMvuDUkF32pb/7+0BQm0:zs/F7RxkgJyBGJzQ98pbKo0
TLSH 4A5423527997621C7A3022BC33C7D6EB4D75B113A5BA7E11C3818595FE07983A6327E0
Reporter abuse_ch
Tags:SilentBuilder zip


Avatar
abuse_ch
Malspam distributing SilentBuilder:

HELO: smtp01.emerald.cmh.synacor.com
Sending IP: 208.47.184.7
From: jmbuzzard@wavecable.com
Subject: RE: PIANO DI RIENTRO PRATICA CO4042791 TRUCCO FEDERICA
Attachment: contract_2815_2_claim-11.zip (contains "document-891775316.xls")

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.URLDOWNLOADTOFILE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.DLLREGISTERSERVER.200327.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.DLLREGISTERSERVER.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4MagicPalmersArcade.20201207.UNOFFICIAL
Create hunting rule

Result
Verdict:
MALICIOUS
Details
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/76b9a531e2e41474dae479ca56e9611376cf3eced4e2d2ac78ee973eaed33a51/
Threat name:
Document-Excel.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2020-12-18 17:01:05 UTC
AV detection:
8 of 48 (16.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o242kmpc4qkhjwxephffn2lbcn3m6pwo2trnfldy52lt5lwthjiq._file
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/76b9a531e2e41474dae479ca56e9611376cf3eced4e2d2ac78ee973eaed33a51

File information

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

Malspam

SilentBuilder

zip 76b9a531e2e41474dae479ca56e9611376cf3eced4e2d2ac78ee973eaed33a51

(this sample)

SilentBuilder

Excel file xls 4e380065d1bf7c83b5d986c190cf8886046cf91e7408573d67fe01203efec1a2

  
Dropping
MD5 07be2bbb25c6af7c0ee124dd823196e6
  
Dropping
SilentBuilder
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 4e380065d1bf7c83b5d986c190cf8886046cf91e7408573d67fe01203efec1a2

Comments