MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be. 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: 13


Maldoc score: 7


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be
SHA3-384 hash: 53e3aa9274bb5b016ecec38d09e06796fcde3c8631a4673ebbd8986c4c4c8bcea77e0e0d039d5fec9665c134f99d7d46
SHA1 hash: 31891c7a476d10a6e3ebf659bf54c24647c6bbc0
MD5 hash: cb3e22a9e5509859b66ed986375ccc4b
humanhash: maine-william-tennessee-jersey
File name:Invoice_1.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:109'056 bytes
First seen:2022-03-31 09:42:42 UTC
Last seen:2022-04-01 11:51:27 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:QsKpbdrHYrMue8q7QPX+5xtekEdi8/dgstsSmsCpH3iZu8ZGsMC:XKpbdrHYrMue8q7QPX+5xtFEdi8/dgi3
TLSH T1B5B39D4BB66AC459F923477988DB475A7327FC341F9A47836354F3292FB89E05A0320B
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 IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
398702 bytesWorkbook
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecAuto_OpenRuns when the Excel Workbook is opened
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
4
# of downloads :
195
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/260017/
Detection(s):
SecuriteInfo.com.Macro.Downlader-14.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Macro.Downloader-15.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.Araexe.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.BITSADMIN.EXE.200327.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.URLDOWNLOADTOFILE.200415.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTPS
Create hunting rule

TwinWave.EvilDoc.EmotetNoticePicturesOfU.MSOLE2.220314.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XLSLOLBINHammerToFall.20201218.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
DNS request
Creating a file
Creating a process with a hidden window
Moving a recently created file
Launching a process
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros macros-on-open regsvr32 regsvr32.exe
Link:
https://www.filescan.io/uploads/624577af1f204239485b0a93/reports/5540aad7-5ae2-4865-a853-235c31b68de0/overview
Label:
Benign
Suspicious Score:
3.9/10
Score Malicious:
39%
Score Benign:
61%
Link:
https://www.malware.ai/gui/files/?id=df4bf534-3ccb-43d8-aa2c-0f7ac8bbca72
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be
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
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/968176
Behaviour
Behavior Graph:
n/a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-03-30 16:49:56 UTC
File Type:
Document
Extracted files:
11
AV detection:
20 of 42 (47.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=te2bpcjewqacejaobvbxbi2ydloiddjyfmu2def5lil66ksgus7a._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch4 banker macro trojan xlm
Link:
https://tria.ge/reports/220331-lpwydahhb5/
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 FindShellTrayWindow
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:
104.131.11.205:443
138.197.109.175:8080
187.84.80.182:443
79.143.187.147:443
189.232.46.161:443
51.91.76.89:8080
103.43.46.182:443
206.189.28.199:8080
45.176.232.124:443
107.182.225.142:8080
72.15.201.15:8080
209.250.246.206:443
164.68.99.3:8080
160.16.142.56:8080
134.122.66.193:8080
45.118.115.99:8080
183.111.227.137:8080
209.126.98.206:8080
1.234.2.232:8080
159.65.88.10:8080
5.9.116.246:8080
82.165.152.127:8080
197.242.150.244:8080
212.24.98.99:8080
185.8.212.130:7080
51.254.140.238:7080
119.193.124.41:7080
103.132.242.26:8080
50.30.40.196:8080
188.44.20.25:443
101.50.0.91:8080
167.172.253.162:8080
185.157.82.211:8080
167.99.115.35:8080
196.218.30.83:443
216.158.226.206:443
176.56.128.118:443
146.59.226.45:443
212.237.17.99:8080
129.232.188.93:443
173.212.193.249:8080
189.126.111.200:7080
103.70.28.102:8080
46.55.222.11:443
158.69.222.101:443
79.172.212.216:8080
151.106.112.196:8080
192.99.251.50:443
103.75.201.2:443
51.91.7.5:8080
1.234.21.73:7080
58.227.42.236:80
153.126.146.25:7080
201.94.166.162:443
172.104.251.154:8080
110.232.117.186:8080
159.8.59.82:8080
176.104.106.96:8080
203.114.109.124:443
131.100.24.231:80
Dropper Extraction:
https://www.gessersh.com/wp-includes/ZwQLepW/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/9934178924b4/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/9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be

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
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.

Malspam

SilentBuilder

Excel file xls 9934178924b40022240e0d4370a3581adc818d382b29a190bd5a17ef2a46a4be

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
URLhaus
https://urlhaus.abuse.ch/url/2122706/
  
URLhaus
https://urlhaus.abuse.ch/url/2120615/
  
URLhaus
https://urlhaus.abuse.ch/url/2118849/
Cape
Cape
https://www.capesandbox.com/analysis/260017/

Comments