MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb. 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 4 File information Comments

SHA256 hash:	1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb
SHA3-384 hash:	d85e593a775edb05bd56bb149ced8dcaac6277b627a18ab706488ae23059c6343a570b8bf570f69642be3a2ab16b672a
SHA1 hash:	0cd9f35db3ada1bc330e9c9362faec0948167c86
MD5 hash:	e5ea65108d9017d176edcc89547ef474
humanhash:	fanta-uniform-hydrogen-nitrogen
File name:	R_7268.xlsm
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	120'832 bytes
First seen:	2022-01-12 18:43:16 UTC
Last seen:	2022-01-12 20:49:36 UTC
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	3072:bKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgMbyVEdBU6hubsll6UQjvxi:bKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgWb
TLSH	T130C3BF9AB25E8869EA65873048D743AA3727EC314F2E43872615B3266FFC8D04B1355B
Reporter	Anonymous
Tags:	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 ID	Section size	Section name
1	4096 bytes	DocumentSummaryInformation
2	4096 bytes	SummaryInformation
3	110445 bytes	Workbook

OLE vba

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

Type	Keyword	Description
AutoExec	Auto_Open	Runs when the Excel Workbook is opened
Suspicious	XLM macro	XLM macro found. It may contain malicious code

Intelligence

File Origin

# of uploads :

# of downloads :

207

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

http://adi.iswks.com/assets/vE/

Verdict:

Malicious activity

Analysis date:

2022-01-12 12:40:49 UTC

Tags:

trojan emotet

Link:

https://app.any.run/tasks/397e5d3e-0fa9-4ac1-84ac-5c27653183ed

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/218799/

Detection(s):

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200327.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.BITSADMIN.EXE.200327.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.URLDOWNLOADTOFILE.200415.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200416.UNOFFICIAL

TwinWave.EvilDoc.Excel4Macro.HiddenSheetDLWAKEUP.20200310.UNOFFICIAL

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

DNS request

Сreating synchronization primitives

Creating a window

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb/results/dashboard

Payload URLs

URL

File name

http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/

WorkBook

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

excel.exe greyware keylogger macros macros-on-open packed print.exe rundll32 shell32.dll stripped

Link:

https://www.filescan.io/uploads/61df217af2e8ec86fef43ade/reports/0aa954d6-3751-45fa-8c87-ec5ae11330bf/overview

Label:

Malicious

Suspicious Score:

6.6/10

Score Malicious:

67%

Score Benign:

33%

Link:

https://www.malware.ai/gui/files/?id=d8595f65-10ca-4bd0-a0d4-ae8336fb6c75

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb

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

Link:

https://www.joesandbox.com/analysis/919589

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)

Yara detected hidden Macro 4.0 in Excel

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb/

Threat name:

Document-Excel.Trojan.Emotet

Status:

Malicious

First seen:

2022-01-12 00:17:39 UTC

File Type:

Document

Extracted files:

AV detection:

16 of 28 (57.14%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=dpj5bu5665y3daxd3zlhbvxzkfohhn3m7fysapgmxkepwlot3w5q._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro xlm

Link:

https://tria.ge/reports/220112-xdf9bsdfc3/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Suspicious File

Score:

0.40

Link:

https://yomi.yoroi.company/submissions/1bd3d0d3bef771b182e3de5670d6f9515c73b76cf971203cccba88fb2dd3ddbb

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.