MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d. 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: 723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d
SHA3-384 hash: 0f2d670f8b1392055c96fa3a9faffbbeffba9dfc75a4d84142bd04a624f4713fceb9ceb62974bc55fe3951c1053d41b4
SHA1 hash: 88f026eb44ebdba6d0f217c8890d2b25b734eec9
MD5 hash: a438359421319af59fc48bccfb22ba2c
humanhash: tennis-item-zebra-cold
File name:Ihre-Online-Rechnung-023867-vom-29.000.2022.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:109'056 bytes
First seen:2022-03-29 16:10:15 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:jsKpbdrHYrMue8q7QPX+5xtekEdi8/dg+tgSmsCpH/KZuAZGsM1:YKpbdrHYrMue8q7QPX+5xtFEdi8/dgwI
TLSH T11BB39D4BB669D459E923477988EB475A7327FC341F9A47836354F3292FB8CE05A0320B
Reporter Anonymous
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
398511 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 :
1
# of downloads :
236
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/259337/
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

Sanesecurity.Badmacro.Xls.Hidehtt.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
Searching for the window
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
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d/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/62432f96a19c649412a6d72f/reports/7d99e0bb-0207-486e-bf1d-e3810256eaa6/overview
Label:
Benign
Suspicious Score:
3.8/10
Score Malicious:
39%
Score Benign:
61%
Link:
https://www.malware.ai/gui/files/?id=121977f3-cf3b-447c-bdc5-048d2d09c43e
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d
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/966908
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 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
Sigma detected: Regsvr32 Command Line Without DLL
Sigma detected: Regsvr32 Network Activity
Sigma detected: Suspicious Remote Thread Created
System process connects to network (likely due to code injection or exploit)
Yara detected Emotet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 599410 Sample: Ihre-Online-Rechnung-023867... Startdate: 29/03/2022 Architecture: WINDOWS Score: 100 65 129.232.188.93 xneeloZA South Africa 2->65 67 189.232.46.161 UninetSAdeCVMX Mexico 2->67 69 55 other IPs or domains 2->69 85 Found malware configuration 2->85 87 Antivirus detection for URL or domain 2->87 89 Multi AV Scanner detection for submitted file 2->89 91 13 other signatures 2->91 15 EXCEL.EXE 7 18 2->15         started        signatures3 process4 dnsIp5 75 fccatinsaat.com 204.11.59.91, 49167, 80 PUBLIC-DOMAIN-REGISTRYUS United States 15->75 57 C:\Users\user\nhth.dll, PE32 15->57 dropped 59 C:\Users\user\AppData\...\pyjXPLrEXf3R[1].dll, PE32 15->59 dropped 61 Ihre-Online-Rechnu...vom-29.000.2022.xls, Composite 15->61 dropped 79 Document exploit detected (creates forbidden files) 15->79 81 Document exploit detected (UrlDownloadToFile) 15->81 20 regsvr32.exe 2 15->20         started        file6 signatures7 process8 file9 63 C:\Windows\SysWOW64\...\aprmjxrejs.esr (copy), PE32 20->63 dropped 95 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->95 24 regsvr32.exe 1 20->24         started        27 regsvr32.exe 20->27         started        signatures10 process11 signatures12 103 Hides that the sample has been downloaded from the Internet (zone.identifier) 24->103 29 regsvr32.exe 1 24->29         started        32 regsvr32.exe 27->32         started        process13 signatures14 105 Hides that the sample has been downloaded from the Internet (zone.identifier) 29->105 34 regsvr32.exe 1 29->34         started        37 regsvr32.exe 32->37         started        process15 signatures16 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 34->83 39 regsvr32.exe 1 34->39         started        42 regsvr32.exe 37->42         started        process17 dnsIp18 99 Hides that the sample has been downloaded from the Internet (zone.identifier) 39->99 45 regsvr32.exe 1 39->45         started        71 159.203.141.156, 8080 DIGITALOCEAN-ASNUS United States 42->71 73 79.143.187.147, 443, 49169 CONTABODE Germany 42->73 101 System process connects to network (likely due to code injection or exploit) 42->101 signatures19 process20 signatures21 107 Hides that the sample has been downloaded from the Internet (zone.identifier) 45->107 48 regsvr32.exe 1 45->48         started        process22 signatures23 77 Hides that the sample has been downloaded from the Internet (zone.identifier) 48->77 51 regsvr32.exe 1 48->51         started        process24 signatures25 93 Hides that the sample has been downloaded from the Internet (zone.identifier) 51->93 54 regsvr32.exe 1 51->54         started        process26 signatures27 97 Hides that the sample has been downloaded from the Internet (zone.identifier) 54->97
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-03-29 16:11:05 UTC
File Type:
Document
Extracted files:
11
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oizzl7uv4plfnvbcsvpnvy7hrm4mezs4vrxgrfd7zpiyqf4adzgq._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch4 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220329-tmxqwscahm/
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:
159.203.141.156:8080
79.143.187.147:443
189.232.46.161:443
51.91.76.89:8080
119.193.124.41:7080
176.104.106.96:8080
1.234.21.73:7080
82.165.152.127:8080
167.172.253.162:8080
153.126.146.25:7080
216.158.226.206:443
103.75.201.2:443
188.44.20.25:443
101.50.0.91:8080
159.65.88.10:8080
176.56.128.118:443
72.15.201.15:8080
203.114.109.124:443
212.237.17.99:8080
192.99.251.50:443
50.30.40.196:8080
173.212.193.249:8080
189.126.111.200:7080
195.154.133.20:443
58.227.42.236:80
46.55.222.11:443
45.176.232.124:443
195.201.151.129:8080
151.106.112.196:8080
209.250.246.206:443
131.100.24.231:80
1.234.2.232:8080
164.68.99.3:8080
51.91.7.5:8080
167.99.115.35:8080
5.9.116.246:8080
185.8.212.130:7080
31.24.158.56:8080
45.142.114.231:8080
79.172.212.216:8080
45.118.135.203:7080
146.59.226.45:443
178.79.147.66:8080
159.8.59.82:8080
158.69.222.101:443
50.116.54.215:443
196.218.30.83:443
129.232.188.93:443
45.118.115.99:8080
51.254.140.238:7080
209.126.98.206:8080
107.182.225.142:8080
134.122.66.193:8080
185.157.82.211:8080
110.232.117.186:8080
197.242.150.244:8080
103.43.46.182:443
212.24.98.99:8080
201.94.166.162:443
Dropper Extraction:
http://fccatinsaat.com/wp-content/Cw3aR6792f/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/723395fe95e3/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/723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d

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 723395fe95e3d656d422955edae3e78b38c2665cac6e68947fcbd18817801e4d

(this sample)

  
Delivery method
Distributed via e-mail attachment
  
URLhaus
https://urlhaus.abuse.ch/url/2119320/
  
URLhaus
https://urlhaus.abuse.ch/url/2118874/
  
URLhaus
https://urlhaus.abuse.ch/url/2119385/
  
URLhaus
https://urlhaus.abuse.ch/url/2118886/
Cape
Cape
https://www.capesandbox.com/analysis/259337/

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