MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50. 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


Squirrelwaffle


Vendor detections: 8


Maldoc score: 3


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50
SHA3-384 hash: 9d41353f6e96ba183277586442833398d21c72f3a06338ac6b94c4025e404d06a214c97ba50292fb61367e262f71a424
SHA1 hash: ea94f85f59615cfec1b3d330810e9d91ff79bd71
MD5 hash: 77bd39191fdc817f2f14f0462bff8d86
humanhash: fix-kentucky-iowa-september
File name:diagram_1376118316.xls
Download: download sample
Signature Squirrelwaffle
Create hunting rule
File size:269'312 bytes
First seen:2021-09-20 11:45:52 UTC
Last seen:2021-09-20 13:01:21 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:mKpb8rGYrMPe3q7Q0XV5xtuE8vG8UM+knfb7I6+tqDWcwnoRZzlj+oSGpGvhmmmE:kj7CqScwoRZ9bSXkh/nLKn
TLSH T14844D02636A5A41DEC2D2B76A8BB53D02337FC504FD38BC77AA772263F726914D22405
Reporter ffforward
Tags:SQUIRRELWAFFLE tr 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
3257152 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
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
2
# of downloads :
214
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/189419/
Detection(s):
TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200327.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.RUNDLL32.EXE.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.DLLREGISTERSERVER.200416.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.AOEX4.BITSNEEDEDFOR.SHELLEXECUTE.200524.UNOFFICIAL
Create hunting rule

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

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

Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50/results/dashboard
Payload URLs
URL
File name
https://cortinastelasytrazos.com/Yro6Atvj/sec.html
WorkBook
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50
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:
Unknown
Detection:
malicious
Classification:
expl
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/854012
Signature
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Microsoft Office Product Spawning Windows Shell
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50/
Threat name:
Document-Office.Downloader.EncDoc
Create hunting rule
Status:
Malicious
First seen:
2021-09-20 11:46:43 UTC
AV detection:
12 of 28 (42.86%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h5ct2byd7kaxbhjfy2w6euqvazxtrk6o5sljtn5ut643ify3xnia._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/210920-nxaq8agegl/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://cortinastelasytrazos.com/Yro6Atvj/sec.html
https://orquideavallenata.com/4jmDb0s9sg/sec.html
https://fundacionverdaderosheroes.com/gY0Op5Jkht/sec.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/3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50

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:Excel_Hidden_Macro_Sheet
Create hunting rule
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

Squirrelwaffle

Excel file xls 3f453d0703fa81709d25c6ade25215066f38abceec9699b7b49fb9b4171bbb50

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/189419/

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