MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e. 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 3 File information Comments 1

SHA256 hash:	ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e
SHA3-384 hash:	5c6b74ee08778ca677c7118efb818783a09b0c31994ef32efe253ff81a2f37b37c017827b61c0e5d977efb7b9ab541ce
SHA1 hash:	552695426f464b9ab34e4943c06981362d89de98
MD5 hash:	021845f32471bccc38b97e1829be010e
humanhash:	october-mirror-kitten-friend
File name:	021845f32471bccc38b97e1829be010e
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	109'056 bytes
First seen:	2022-03-30 18:04:17 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	3072:QsKpbdrHYrMue8q7QPX+5xtekEdi8/dgstsSmsCpH3iZu8ZGsMW:XKpbdrHYrMue8q7QPX+5xtFEdi8/dgiT
TLSH	T1F3B39D4BB66AC459F923477988DB475A7327FC341F9A47836354F3292FB89E05A0320B
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: 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	98702 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 :

267

Origin country :

n/a

Vendor Threat Intelligence

Verdict:

Malicious

File type:

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Has a screenshot:

False

Contains macros:

True

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/259809/

Detection(s):

SecuriteInfo.com.Macro.Downlader-14.UNOFFICIAL

SecuriteInfo.com.Macro.Downloader-15.UNOFFICIAL

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL

Sanesecurity.Badmacro.Xls.Araexe.UNOFFICIAL

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

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

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTPS

TwinWave.EvilDoc.EmotetNoticePicturesOfU.MSOLE2.220314.UNOFFICIAL

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Sending a custom TCP request

Creating a window

Сreating synchronization primitives

DNS request

Creating a file

Sending an HTTP GET request

Sending a custom TCP request by exploiting the app vulnerability

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e/results/dashboard

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

coinminer emotet macros macros-on-open regsvr32 regsvr32.exe

Link:

https://www.filescan.io/uploads/62449bcea19c649412adda22/reports/8c2dd27a-e10b-4e6f-92c0-51b01eb07193/overview

Label:

Benign

Suspicious Score:

3.9/10

Score Malicious:

39%

Score Benign:

61%

Link:

https://www.malware.ai/gui/files/?id=3602714a-42ad-461f-a968-034b1aadf3b6

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e

Details

Macro Execution Coercion

Detected a document that appears to social engineer the user into activating embedded logic.

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/967827

Behaviour

Behavior Graph:

n/a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e/

Threat name:

Document-Office.Trojan.Emotet

Status:

Malicious

First seen:

2022-03-30 18:03:50 UTC

File Type:

Document

Extracted files:

AV detection:

16 of 26 (61.54%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zj5oa5unr3eezfrwuquhwcje6y5wynfio3mquhnzjfcevh4rh2pa._file

Result

Malware family:

emotet

Score:

10/10

Tags:

family:emotet botnet:epoch4 banker macro suricata trojan xlm

Link:

https://tria.ge/reports/220330-wn55rsbeaq/

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

Drops file in System32 directory

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:

45.176.232.125:443
138.197.109.175:8080
187.84.80.182:443
79.143.187.147:443
189.232.46.161:443
103.70.28.102:8080
134.122.66.193:8080
151.106.112.196:8080
160.16.142.56:8080
212.24.98.99:8080
188.44.20.25:443
197.242.150.244:8080
206.189.28.199:8080
172.104.251.154:8080
103.43.46.182:443
203.114.109.124:443
103.75.201.2:443
58.227.42.236:80
201.94.166.162:443
189.126.111.200:7080
185.8.212.130:7080
167.99.115.35:8080
129.232.188.93:443
1.234.2.232:8080
153.126.146.25:7080
185.157.82.211:8080
131.100.24.231:80
1.234.21.73:7080
192.99.251.50:443
119.193.124.41:7080
159.8.59.82:8080
158.69.222.101:443
51.254.140.238:7080
5.9.116.246:8080
45.176.232.124:443
159.65.88.10:8080
101.50.0.91:8080
107.182.225.142:8080
167.172.253.162:8080
79.172.212.216:8080
50.30.40.196:8080
196.218.30.83:443
51.91.7.5:8080
212.237.17.99:8080
72.15.201.15:8080
183.111.227.137:8080
51.91.76.89:8080
209.250.246.206:443
176.104.106.96:8080
46.55.222.11:443
209.126.98.206:8080
164.68.99.3:8080
176.56.128.118:443
103.132.242.26:8080
110.232.117.186:8080
146.59.226.45:443
173.212.193.249:8080
82.165.152.127:8080
45.118.115.99:8080
216.158.226.206:443

Dropper Extraction:

https://www.gessersh.com/wp-includes/ZwQLepW/

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/ca7ae0768d8ec84c9636a4287b0924f63b6c34a876d90a1db949444a9f913e9e

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.