MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d. 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: 5


Intelligence 12 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d
SHA3-384 hash: 9d2037cd8aca4ecc11e63dd0fbc645356319b49bd7ecccda8e5c95466626a911af3c044ba4f2f684c659eaf40c57b25d
SHA1 hash: 18086edfbaa598112d8f3594ea61b7c471aed705
MD5 hash: 05275adf907b19bd170637c946fcb0ba
humanhash: carolina-hamper-floor-comet
File name:05275adf907b19bd170637c946fcb0ba
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:131'874 bytes
First seen:2022-01-18 14:56:29 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 3072:Wuk3hbdlylKsgqopeJBWhZFGkE+cL2NdAxEvN8B/W6X1yxYovrepMUdQ6gSz4i:Fk3hbdlylKsgqopeJBWhZFVE+W2NdAmv
TLSH T1F2D3AE03A5458F86D54C83B47F5745C46F03AE1CEAF62ACF2542BB133B7ABB1490A52E
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: 5
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
3120088 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)
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
132
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/220183/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.47707798.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.MSHTA.210816.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
DNS request
Launching a process
Running batch commands by exploiting the app vulnerability
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd cmd.exe emotet excel.exe exploit macros macros-on-open mshta mshta.exe print.exe stripped
Link:
https://www.filescan.io/uploads/61e6d543d32385db63024f68/reports/ebff8d7c-b731-4386-b633-4aa09a1720d4/overview
Label:
Malicious
Suspicious Score:
8.1/10
Score Malicious:
81%
Score Benign:
19%
Link:
https://www.malware.ai/gui/files/?id=207e7cf6-5669-4330-b9d9-d3d399cb3e58
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
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.
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
Hidden Macro 4.0 Emotet
Create hunting rule
Detection:
malicious
Classification:
expl.evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/923036
Signature
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: MSHTA Spawning Windows Shell
Sigma detected: Suspicious MSHTA Process Patterns
Sigma detected: Suspicious PowerShell Command Line
System process connects to network (likely due to code injection or exploit)
Yara detected Emotet
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 555522 Sample: IvUEDPjjoi.xls Startdate: 19/01/2022 Architecture: WINDOWS Score: 100 71 Multi AV Scanner detection for domain / URL 2->71 73 Antivirus detection for URL or domain 2->73 75 Multi AV Scanner detection for dropped file 2->75 77 13 other signatures 2->77 13 EXCEL.EXE 26 21 2->13         started        17 svchost.exe 4 2->17         started        19 svchost.exe 1 2->19         started        21 2 other processes 2->21 process3 file4 53 C:\Users\user\Desktop\IvUEDPjjoi.xls, Composite 13->53 dropped 81 Obfuscated command line found 13->81 23 cmd.exe 1 13->23         started        signatures5 process6 process7 25 mshta.exe 22 23->25         started        28 conhost.exe 23->28         started        dnsIp8 57 185.7.214.7, 49747, 49750, 80 DELUNETDE France 25->57 30 powershell.exe 15 24 25->30         started        process9 dnsIp10 59 mecaglobal.com 198.12.243.55, 49751, 80 AS-26496-GO-DADDY-COM-LLCUS United States 30->59 61 2021.posadamision.com 184.171.244.38, 49752, 80 DIMENOCUS United States 30->61 63 192.168.2.1 unknown unknown 30->63 55 C:\Users\Public\Documents\ssd.dll, PE32 30->55 dropped 67 Powershell drops PE file 30->67 35 cmd.exe 1 30->35         started        37 conhost.exe 30->37         started        file11 signatures12 process13 process14 39 rundll32.exe 35->39         started        process15 41 rundll32.exe 2 39->41         started        file16 51 C:\Windows\...\qeshiyhiycqy.obn (copy), PE32 41->51 dropped 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 41->79 45 rundll32.exe 41->45         started        signatures17 process18 process19 47 rundll32.exe 45->47         started        dnsIp20 65 131.100.24.231, 49762, 80 GOPLEXTELECOMUNICACOESEINTERNETLTDA-MEBR Brazil 47->65 69 System process connects to network (likely due to code injection or exploit) 47->69 signatures21
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Suspicious
First seen:
2022-01-18 14:57:07 UTC
File Type:
Document
Extracted files:
7
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=s7h456lvjfdtlfm5fas6wbwnpugv2g2e5gxpr6p6ntoukhwwosoq._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/220118-sbk3aabgdn/
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 AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in System32 directory
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
Suspicious use of NtCreateProcessExOtherParentProcess
suricata: ET MALWARE W32/Emotet CnC Beacon 3
Malware Config
C2 Extraction:
131.100.24.231:80
209.59.138.75:7080
103.8.26.103:8080
51.38.71.0:443
212.237.17.99:8080
79.172.212.216:8080
207.38.84.195:8080
104.168.155.129:8080
178.79.147.66:8080
46.55.222.11:443
103.8.26.102:8080
192.254.71.210:443
45.176.232.124:443
203.114.109.124:443
51.68.175.8:8080
58.227.42.236:80
45.142.114.231:8080
217.182.143.207:443
178.63.25.185:443
45.118.115.99:8080
103.75.201.2:443
104.251.214.46:8080
158.69.222.101:443
81.0.236.90:443
45.118.135.203:7080
176.104.106.96:8080
212.237.56.116:7080
216.158.226.206:443
173.212.193.249:8080
50.116.54.215:443
138.185.72.26:8080
41.76.108.46:8080
212.237.5.209:443
107.182.225.142:8080
195.154.133.20:443
162.214.50.39:7080
110.232.117.186:8080
Dropper Extraction:
http://0xb907d607/cc.html
http://185.7.214.7/PP91.PNG
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/97cfcef97549/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/97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d

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.

Web download

SilentBuilder

Excel file xlsx 97cfcef975494735959d2825eb06cd7d0d5d1b44e9aef8f9fe6cdd451ed6749d

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1986297/
  
URLhaus
https://urlhaus.abuse.ch/url/1986196/
  
URLhaus
https://urlhaus.abuse.ch/url/1985806/
  
URLhaus
https://urlhaus.abuse.ch/url/1986639/
  
URLhaus
https://urlhaus.abuse.ch/url/1986211/
  
URLhaus
https://urlhaus.abuse.ch/url/1986373/
  
URLhaus
https://urlhaus.abuse.ch/url/1986321/
  
URLhaus
https://urlhaus.abuse.ch/url/1986147/
Cape
Cape
https://www.capesandbox.com/analysis/220183/

Comments


Avatar
zbet commented on 2022-01-18 14:56:30 UTC

url : hxxps://isquiet.com/download/inz1iSY/?i=1