MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800. 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 4 File information Comments 1

SHA256 hash:	98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800
SHA3-384 hash:	a0313198ab4090ae875324039d86d74211ac5e8056d52686fb85435e468a8699a87116203ab76e08dc952fef308c34af
SHA1 hash:	1813099620c692acf3fe6184a173d4df516747f3
MD5 hash:	29fa5ca6eadfffc1415cbe605be1d90e
humanhash:	eleven-green-sweet-spring
File name:	29fa5ca6eadfffc1415cbe605be1d90e
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	120'832 bytes
First seen:	2022-01-12 04:11:43 UTC
Last seen:	2022-01-12 05:55:43 UTC
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	3072:bKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgMbyVEdBU6hubsll6UQjvxC:bKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgW7
TLSH	T12BC3BF9AB25E8869EA65873048D743AA3727EC314F2E43872615B3266FFC8D04B1355B
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 :

191

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

29fa5ca6eadfffc1415cbe605be1d90e

Verdict:

No threats detected

Analysis date:

2022-01-12 04:13:16 UTC

Tags:

macros

Link:

https://app.any.run/tasks/e328560a-9e8b-4bb2-b49e-4a7c498c7943

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/218481/

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

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/98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800/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/sha256/98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800

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/918882

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/98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800/

Threat name:

Document-Word.Trojan.Emotet

Status:

Malicious

First seen:

2022-01-12 04:12:09 UTC

File Type:

Document

Extracted files:

AV detection:

13 of 28 (46.43%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=tddavsib7nrts6eb2elxihnnvwsvjy6v5mrfnd4g4zbali2odaaa._file

Result

Malware family:

emotet

Score:

10/10

Tags:

family:emotet banker macro trojan xlm

Link:

https://tria.ge/reports/220112-eshrlabae5/

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://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/
http://towardsun.net/admin/BYGGkrYAnT/
http://k-antiques.jp/wp-includes/SCYdA6TLohYk2/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/98c60ac901fb/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/98c60ac901fb63397881d117741dadada554e3d5eb22568f86e64205a34e1800

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.