MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7. 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: 11


Maldoc score: 3


Intelligence 11 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7
SHA3-384 hash: 599bd6e01a7687735812d7bd24a0ea69532950a36dea4fe8dc06b7840a82a3058850889d9ee3eca39236c259b287b1de
SHA1 hash: 628447df750db21dc36a5041e0a1fa774504e947
MD5 hash: ffc878b87dc94fb1f598d115b9e0c733
humanhash: lion-batman-black-east
File name:1796425.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:64'069 bytes
First seen:2021-12-23 22:49:29 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:d0Nk3hbdlylKsgqopeJBWhZFGkE+cL2NdAKzMk9B+ooszMk9A+oos:dak3hbdlylKsgqopeJBWhZFGkE+cL2NP
TLSH T1F1535C56BB87998EDA4213358CE74359B337FC168BA7C7473554B3294EB4AE08C03A1B
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: 3
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
352228 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
IOC87.251.86.178IPv4 address
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
169
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1796425.xls
Verdict:
Malicious activity
Analysis date:
2021-12-23 22:52:48 UTC
Tags:
macros macros40 trojan
Link:
https://app.any.run/tasks/5e8dab0c-c9c8-490b-9af0-309ef00c758c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/216040/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.47699903.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.HiddenSheetExcel4LureRecognizer.20200915.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4MacroLuresWatchingTheDectives.20210115.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.Excel4HateMeSometimes.20210819.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
DNS request
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7/results/dashboard
Payload URLs
URL
File name
87.251.86.178
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open mshta stripped
Link:
https://www.filescan.io/uploads/61c4fd258991ba72b39464a2/reports/9f23ff0e-27f2-4c42-8797-2da3cf8ec077/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7
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
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/912217
Signature
Antivirus detection for URL or domain
Document exploit detected (process start blacklist hit)
Found Excel 4.0 Macro with suspicious formulas
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Obfuscated command line found
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
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 544697 Sample: 1796425.xls Startdate: 24/12/2021 Architecture: WINDOWS Score: 100 25 schedu.teicrete.gr 2->25 27 econews.site 2->27 29 angel.bk.idv.tw 2->29 37 Multi AV Scanner detection for domain / URL 2->37 39 Antivirus detection for URL or domain 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 9 other signatures 2->43 10 EXCEL.EXE 24 20 2->10         started        signatures3 process4 signatures5 45 Obfuscated command line found 10->45 13 cmd.exe 1 10->13         started        process6 process7 15 mshta.exe 22 13->15         started        18 conhost.exe 13->18         started        dnsIp8 35 87.251.86.178, 49774, 49777, 80 GALAXYDATARU Russian Federation 15->35 20 powershell.exe 15 21 15->20         started        process9 dnsIp10 31 naturaleddiscount.com 45.131.83.9, 49779, 80 ASN-XTUDIONETES Spain 20->31 33 www.catholicroundup.com 157.245.119.201, 49778, 80 DIGITALOCEAN-ASNUS United States 20->33 23 conhost.exe 20->23         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2021-12-22 23:59:07 UTC
File Type:
Document
Extracted files:
10
AV detection:
18 of 43 (41.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=paworcrj5hovcecwgym2vkhtrkvn5zpekj2l76tczo423wgcnd3q._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro xlm
Link:
https://tria.ge/reports/211223-2r9v1scegq/
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 FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Enumerates physical storage devices
Blocklisted process makes network request
Downloads MZ/PE file
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://87.251.86.178/pp/oo.html
http://87.251.86.178/pp/PP.PNG
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/782ce88a29e9dd5110563619aaa8f38aaadee5e45274bffa62cbb9add8c268f7

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Excel_Hidden_Macro_Sheet
Create hunting rule
Rule name:INDICATOR_DOC_PhishingPatterns
Create hunting rule
Author:ditekSHen
Description:Detects OLE, RTF, PDF and OOXML (decompressed) documents with common phishing strings
Rule name:SUSP_EnableContent_String_Gen
Create hunting rule
Author:Florian Roth
Description:Detects suspicious string that asks to enable active content in Office Doc
Reference:Internal Research
Rule name:SUSP_EnableContent_String_Gen_RID322C
Create hunting rule
Author:Florian Roth
Description:Detects suspicious string that asks to enable active content in Office Doc
Reference:Internal Research
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.

  
Delivery method
Distributed via e-mail link
Cape
Cape
https://www.capesandbox.com/analysis/216040/
  
URLhaus
https://urlhaus.abuse.ch/url/1911926/

Comments