MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca. 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: 10

Intelligence 10 IOCs YARA 2 File information Comments

SHA256 hash:	c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca
SHA3-384 hash:	c67a7807213c76b8fb611cb6b0837108e3ca4d9903ab49e66e85f35a7e34da3a480bc9ff9e258b375ab1abc8bb7ae2ef
SHA1 hash:	0a737c212b53277a882e7f963d54dea147ca81b1
MD5 hash:	f476a81acc067b9469f9b2562489809c
humanhash:	fruit-red-crazy-lima
File name:	K-1 for Webex by CISCO.xls
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	97'280 bytes
First seen:	2022-07-07 08:09:58 UTC
Last seen:	2022-07-07 08:48:32 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	1536:iFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgcHuS4hcTO97v7UYdEJmkt:cKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgU
TLSH	T1FB934945B69ADA1EF625833149E747A67333FC304F6B47472228B3257FB99A01B0721B
TrID	80.2% (.XLS) Microsoft Excel sheet (32500/1/3) 19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter	pr0xylife
Tags:	SilentBuilder xls

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: 10

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	86716 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
Hex String	SegWT	5365675754
Hex String	V4cG	56346347
Hex String	GgWG	47675747
Hex String	gGGE	67474745
Hex String	xXWd	78585764
Hex String	E64R	45363452
Suspicious	Windows	May enumerate application windows (if combined with Shell.Application object)
Suspicious	URLDownloadToFileA	May download files from the Internet
Suspicious	EXEC	May run an executable file or a system
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
Suspicious	XLM macro	XLM macro found. It may contain malicious code

Intelligence

File Origin

# of uploads :

# of downloads :

238

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/285429/

Detection(s):

Sanesecurity.Badmacro.Xls.encdl.UNOFFICIAL

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

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200416.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200524.UNOFFICIAL

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20220215.UNOFFICIAL

Result

Verdict:

Clean

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Creating a window

Сreating synchronization primitives

DNS request

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca/results/dashboard

Payload URLs

URL

File name

www.daxberger.at

WorkBook

Document image

Image:

Download PNG

Gathering data

Label:

Benign

Suspicious Score:

3.7/10

Score Malicious:

37%

Score Benign:

63%

Link:

https://www.malware.ai/gui/files/?id=e84b3be0-32b9-420a-bd06-7bc458760d5b

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca

Details

Autostarting Excel Macro Sheet

Excel contains Macrosheet logic that will trigger automatically upon document open.

Result

Threat name:

Hidden Macro 4.0, Emotet

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1026229

Signature

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

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 submitted file

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Office process drops PE file

Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)

Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)

Snort IDS alert for network traffic

System process connects to network (likely due to code injection or exploit)

Uses ipconfig to lookup or modify the Windows network settings

Yara detected Emotet

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca/

Threat name:

Document-Excel.Trojan.Abracadabra

Status:

Malicious

First seen:

2022-07-06 21:04:29 UTC

File Type:

Document

Extracted files:

AV detection:

18 of 39 (46.15%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zarsp3dq2cmesthc6yrhcg2z6f4pxjfsokwzz677fjakwk5ba7fa._file

Result

Malware family:

emotet

Score:

10/10

Tags:

family:emotet botnet:epoch4 banker macro suricata trojan xlm

Link:

https://tria.ge/reports/220707-j2pnqagbgj/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Gathers network information

Gathers system information

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Loads dropped DLL

Downloads MZ/PE file

Emotet

Process spawned unexpected child process

suricata: ET MALWARE W32/Emotet CnC Beacon 3

Malware Config

C2 Extraction:

94.23.45.86:4143
209.97.163.214:443
212.24.98.99:8080
103.43.75.120:443
183.111.227.137:8080
197.242.150.244:8080
129.232.188.93:443
159.65.88.10:8080
163.44.196.120:8080
51.161.73.194:443
164.90.222.65:443
159.89.202.34:443
1.234.2.232:8080
150.95.66.124:8080
51.91.76.89:8080
196.218.30.83:443
5.9.116.246:8080
146.59.226.45:443
173.212.193.249:8080
213.241.20.155:443
213.239.212.5:443
207.148.79.14:8080
51.254.140.238:7080
45.235.8.30:8080
147.139.166.154:8080
64.227.100.222:8080
82.165.152.127:8080
172.105.226.75:8080
131.100.24.231:80
206.189.28.199:8080
151.106.112.196:8080
119.193.124.41:7080
45.176.232.124:443
79.137.35.198:8080
186.194.240.217:443
103.70.28.102:8080
159.65.140.115:443
104.168.155.143:8080
45.118.115.99:8080
115.68.227.76:8080
72.15.201.15:8080
144.202.108.116:8080
37.187.115.122:8080
110.232.117.186:8080
209.126.98.206:8080
172.104.251.154:8080
82.223.21.224:8080
101.50.0.91:8080
103.132.242.26:8080
201.94.166.162:443
185.4.135.165:8080
160.16.142.56:8080
107.170.39.149:8080
134.122.66.193:8080
139.59.126.41:443
149.56.131.28:8080
91.207.28.33:8080
164.68.99.3:8080
188.44.20.25:443
103.75.201.2:443
167.172.253.162:8080
158.69.222.101:443
153.126.146.25:7080
69.63.64.48:8080
51.91.142.26:443
131.100.24.199:4143
1.234.21.73:8080
167.172.248.70:8080
201.73.143.120:8080
144.91.80.228:8080
34.80.191.247:7080
144.91.92.120:8080
217.79.180.211:8080
146.59.151.250:443
162.243.103.246:8080
104.248.155.133:443
49.231.16.102:8080
164.68.102.31:8080
45.226.53.34:443
136.243.32.168:443
138.197.68.35:8080
104.236.40.81:443
165.227.166.238:8080
144.217.88.125:443
45.93.136.110:8080

Dropper Extraction:

http://dazzlecollections.co.za/THDXpHbk3YwA/HTolLw1ams3x/
http://www.daxberger.at/stats/NfxCfPkIhjZqEvLMN2Ul/
http://k-s-j.jp/contact/r3a9keM/
http://kentandcowines.com.au/wp-content/nkz1FRU9Y5i/L/

Malware family:

Emotet

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c82327ec70d0/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/c82327ec70d098494ce2f622711b59f178fba4b272ad9cfbff2a40ab2ba107ca

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:	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.

Cape

https://www.capesandbox.com/analysis/285429/

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