MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26. 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: 10

Maldoc score: 3

Intelligence 10 IOCs YARA 5 File information Comments 1

SHA256 hash:	926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26
SHA3-384 hash:	d55888a618fe49dd98e3188160f1859084b0f8a213741a2122d675ad81d0918f8c17b09799fa4ae38fed3bbc18be6708
SHA1 hash:	6d6b806191d6e7def354a4857a89b5e69c03f0c0
MD5 hash:	5d2dc57f03dd93adfd8d570bf44654a9
humanhash:	wolfram-pasta-speaker-island
File name:	5d2dc57f03dd93adfd8d570bf44654a9
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	120'832 bytes
First seen:	2022-01-12 01:33:05 UTC
Last seen:	2022-01-12 18:45:34 UTC
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	3072:bKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgMbyVEdBU6hubsll6UQjvx2:bKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgWn
TLSH	T15CC3BF9AB25E8869EA65873048D743AA3727EC314F2E43872615B3266FFC8D04B1355B
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 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 :

245

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

5d2dc57f03dd93adfd8d570bf44654a9

Verdict:

Malicious activity

Analysis date:

2022-01-12 01:36:15 UTC

Tags:

macros

Link:

https://app.any.run/tasks/bdacd2a7-c3a0-49fa-84a4-098c5381c915

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/218441/

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

DNS request

Searching for the window

Creating a window

Сreating synchronization primitives

Creating a file

Sending an HTTP GET request

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26/results/dashboard

Payload URLs

URL

File name

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

WorkBook

Document image

Image:

Download PNG

Gathering data

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26

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/918826

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 (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 domain / URL

Multi AV Scanner detection for submitted file

Office process drops PE file

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26/

Threat name:

Document-Office.Trojan.Emotet

Status:

Malicious

First seen:

2022-01-12 01:25:23 UTC

File Type:

Document

Extracted files:

AV detection:

12 of 43 (27.91%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=sjwielrmjv4leuxxrdj7u5nhpp7ncoak2ugnvtzb6px534k3bmta._file

Result

Malware family:

n/a

Score:

10/10

Tags:

macro xlm

Link:

https://tria.ge/reports/220112-by4z8saec3/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Downloads MZ/PE file

Malware Config

Dropper Extraction:

http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/
http://towardsun.net/admin/BYGGkrYAnT/

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/926c822e2c4d78b252f788d3fa75a77bfed1380ad50cdacf21f3efddf15b0b26

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.