MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f. 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

Maldoc score: 7

Intelligence 12 IOCs YARA 2 File information Comments

SHA256 hash:	93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f
SHA3-384 hash:	346050459468ab4e7d5bbc4ca4c7532ae93d02d939b3d58863022f0dc76883adc8631830f28cc06cc287028d3394af3b
SHA1 hash:	b0b9613b4d3e1e77b78cb8c76594e90a3a603e8c
MD5 hash:	cae7e1179136fe3bf35b6e514d7704f4
humanhash:	florida-magazine-wolfram-blossom
File name:	iMedPub LTD_1.xls
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	48'640 bytes
First seen:	2022-04-22 12:20:55 UTC
Last seen:	Never
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	768:4DM52tfQXi8vgLZkTOHkQT51Vp6AwPdM8gQ6JT5X6DGwUdh+pqjeSLjcvLtzrxF2:462tfQXi8vgLZkTOHkQT51Vp6AwPe8gj
TLSH	T1F123B646BA5D9859E9258B7548E743E9B333FC201F6B0B833616B3257FF49E05A03207
TrID	80.2% (.XLS) Microsoft Excel sheet (32500/1/3) 19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter	TeamDreier
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: 7

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	38603 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	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
Suspicious	Base64 Strings	Base64-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 :

216

Origin country :

n/a

Vendor Threat Intelligence

Verdict:

Malicious

File type:

application/vnd.ms-excel

Has a screenshot:

False

Contains macros:

True

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/265773/

Detection(s):

SecuriteInfo.com.Macro.Downloader-19.UNOFFICIAL

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL

TwinWave.EvilDoc.XLMConCatScratchFever.20210921.UNOFFICIAL

TwinWave.EvilDoc.EmoZenith.20220420.UNOFFICIAL

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Creating a window

Сreating synchronization primitives

DNS request

Query of malicious DNS domain

Sending an HTTP GET request

Sending a TCP request to an infection source by exploiting the app vulnerability

Sending a custom TCP request by exploiting the app vulnerability

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f/results/dashboard

Payload URLs

URL

File name

https://www.escueladecinemza.com.ar/_installation/IBlj/

WorkBook

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

greyware keylogger macros macros-on-open packed regsvr32 regsvr32.exe

Link:

https://www.filescan.io/uploads/6262adb09cf9c88e50e40ade/reports/6f346cb9-1837-467d-b11f-4bc1a7c4f933/overview

Label:

Benign

Suspicious Score:

4.3/10

Score Malicious:

43%

Score Benign:

57%

Link:

https://www.malware.ai/gui/files/?id=d6642322-4c32-45a4-8c0d-645683cb7733

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f

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/981608

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

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Multi AV Scanner detection for domain / URL

Multi AV Scanner detection for submitted file

Office process drops PE file

Sigma detected: Microsoft Office Product Spawning Windows Shell

Sigma detected: Regsvr32 Command Line Without DLL

Sigma detected: Regsvr32 Network Activity

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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

Yara detected Emotet

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f/

Threat name:

Document-Office.Trojan.Emotet

Status:

Malicious

First seen:

2022-04-22 09:48:38 UTC

File Type:

Document

Extracted files:

AV detection:

18 of 41 (43.90%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=spss2b3tblhkdwmis6epgdt7wpg2e6xxerhcmvzxojcuom2vxghq._file

Result

Malware family:

emotet

Score:

10/10

Tags:

family:emotet botnet:epoch4 banker macro trojan xlm

Link:

https://tria.ge/reports/220422-pjba9scbb2/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Drops file in System32 directory

Loads dropped DLL

Downloads MZ/PE file

Emotet

Process spawned unexpected child process

Malware Config

C2 Extraction:

138.201.142.73:8080
138.197.147.101:443
134.195.212.50:7080
104.168.154.79:8080
149.56.131.28:8080
129.232.188.93:443
212.24.98.99:8080
119.193.124.41:7080
45.118.115.99:8080
188.44.20.25:443
103.132.242.26:8080
201.94.166.162:443
1.234.21.73:7080
206.189.28.199:8080
185.8.212.130:7080
82.165.152.127:8080
176.104.106.96:8080
173.212.193.249:8080
167.99.115.35:8080
209.126.98.206:8080
185.157.82.211:8080
212.237.17.99:8080
185.4.135.165:8080
51.91.7.5:8080
187.84.80.182:443
164.68.99.3:8080
107.182.225.142:8080
58.227.42.236:80
103.75.201.2:443
101.50.0.91:8080
216.158.226.206:443
151.106.112.196:8080
45.235.8.30:8080
146.59.226.45:443
45.176.232.124:443
134.122.66.193:8080
51.254.140.238:7080
131.100.24.231:80
167.172.253.162:8080
50.30.40.196:8080
203.114.109.124:443
94.23.45.86:4143
189.126.111.200:7080
160.16.142.56:8080
27.54.89.58:8080
5.9.116.246:8080
46.55.222.11:443
209.97.163.214:443
110.232.117.186:8080
1.234.2.232:8080
153.126.146.25:7080
183.111.227.137:8080
196.218.30.83:443
103.70.28.102:8080
51.91.76.89:8080
91.207.28.33:8080
72.15.201.15:8080
103.43.46.182:443
209.250.246.206:443
197.242.150.244:8080
159.65.88.10:8080
172.104.251.154:8080
158.69.222.101:443

Dropper Extraction:

https://www.escueladecinemza.com.ar/_installation/IBlj/
https://ciencias-exactas.com.ar/old/Bupubz1trh/
http://counteract.com.br/wp-admin/WWcACJFy3Yn/
https://creemo.pl/wp-admin/0uDUHJ4KVAw/
http://dancefox24.de/templates/owT/
http://focusmedica.in/fmlib/TYiQdcEj9FW0/

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/93e52d07730a/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/93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f

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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

SilentBuilder

xls 93e52d07730acea1d9889788f30e7fb3cda27af7244e2657377245473355b98f

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/265773/

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample