MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc. 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


Intelligence 12 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc
SHA3-384 hash: 2254b0b81f3dde95ce095db0a5fb5122a5136f1523c9e2e61d60f7068c15a2173e92d0cb0d02d0af2b4b615555e355ec
SHA1 hash: 30cd168113c45712f8b2786e10142a06cac7dc4d
MD5 hash: 0b05d440d03b784560c936d2cf93a033
humanhash: pennsylvania-india-uniform-robin
File name:0b05d440d03b784560c936d2cf93a033
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:115'712 bytes
First seen:2022-01-11 15:36:47 UTC
Last seen:2022-01-11 17:44:45 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 3072:yKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgQCyVEdBU6hubsll6UQjvxm:yKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgbr
TLSH T15CB3CF9AB21E886DEA658B3058D7439A7727EC314F6F43872615B3227FBC8D04B1350B
Reporter zbetcheckin
Tags:excel SilentBuilder xlsx

Intelligence

File Origin
# of uploads :
2
# of downloads :
195
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0b05d440d03b784560c936d2cf93a033
Verdict:
Malicious activity
Analysis date:
2022-01-11 17:54:25 UTC
Tags:
macros loader
Link:
https://app.any.run/tasks/24458e57-b16f-49b0-b44c-d62012adebaa

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/218256/
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 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/681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc/results/dashboard
Payload URLs
URL
File name
http://gaidov.bg/wp-includes/Ug/
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
60%
Tags:
coinminer excel.exe macros macros-on-open print.exe rundll32 stripped
Link:
https://www.filescan.io/uploads/61dda421e997359713dd3fa3/reports/92ec6fe1-5229-4fbd-8d0e-706866146df5/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc
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/918449
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 dropped file
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
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc/
Threat name:
Document-Excel.Downloader.EncDoc
Create hunting rule
Status:
Malicious
First seen:
2022-01-11 15:37:09 UTC
File Type:
Document
Extracted files:
8
AV detection:
15 of 28 (53.57%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nakblpwepfjjmbrgzsipg2vofd7ackb4c3g46gd3uxbtdulq7lga._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet banker macro trojan xlm
Link:
https://tria.ge/reports/220111-s2ggsagba7/
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://gaidov.bg/wp-includes/Ug/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/681415bec479/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/681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc

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 681415bec47952960626cc90f36aae28fe01283c16cdcf187ba5c331d170facc

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1967398/
  
URLhaus
https://urlhaus.abuse.ch/url/1967324/
  
URLhaus
https://urlhaus.abuse.ch/url/1967156/
  
URLhaus
https://urlhaus.abuse.ch/url/1967124/
Cape
Cape
https://www.capesandbox.com/analysis/218256/

Comments


Avatar
zbet commented on 2022-01-11 15:36:48 UTC

url : hxxp://aplicacolor.es/-/G7eQa80/?i=1