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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea. 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


ZLoader


Vendor detections: 12


Maldoc score: 3


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

SHA256 hash: c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea
SHA3-384 hash: 4b5023c99adbfcbf141c33643a103bcd2bc8f3a190c74d46a710aaf9d0de3d012d1478688c59be48d63d7a4808488716
SHA1 hash: 592dc08e825b709ce6659b6fe0e0115f3b3c07c4
MD5 hash: 1f168ac4f678476e493552e65995ae1a
humanhash: mars-tango-two-april
File name:SecuriteInfo.com.Exploit.Siggen3.2491.3650.28971
Download: download sample
Signature ZLoader
Create hunting rule
File size:36'864 bytes
First seen:2024-09-10 03:17:20 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 768:iPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJf63KmlDnNzbFwv4:Gok3hbdlylKsgqopeJBWhZFGkE+cL2Nd
TLSH T1BEF283E3BB96EE26CE08437548AB42906712EC529F6B838B7354F7393F71BD05A02547
TrID 58.2% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
33.5% (.XLS) Microsoft Excel sheet (32500/1/3)
8.2% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika xls
Reporter SecuriteInfoCom
Tags:xlsx ZLoader

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
Application name is Microsoft Excel
Office document is in OLE format
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
327052 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
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
838
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Exploit.Siggen3.2491.3650.28971
Verdict:
Suspicious activity
Analysis date:
2024-09-10 03:19:44 UTC
Tags:
generated-doc macros40
Link:
https://app.any.run/tasks/986a12a8-3e91-4d31-a9f9-c600153df03d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Detection(s):
SecuriteInfo.com.Exploit.Siggen3.2491.3650.28971.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4.BlackSubmarines.2020.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4UnicodeTransPoseReadyOrNot.ENABLE.210222.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderGasPanic.20210216.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.20201116.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.M2.20201116.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66dfba6c76bc4542b0494ec7
Tags:
Generic Kryptik
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
Сreating synchronization primitives
DNS request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea/results/dashboard
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
language-ca macros macros-on-open stripped
Link:
https://www.filescan.io/uploads/66dfba6cbaa5cec8a70d34ba/reports/49a03276-a7c1-4b43-bdb2-9480cec70b10/overview
Verdict:
Malicious
Labled as:
XF:AShadow.1205
Link:
https://www.hybrid-analysis.com/sample/c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea
Label:
Malicious
Suspicious Score:
9.9/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=0853c3cf-25e8-44f6-b6aa-468f021925ad
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1508410
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Potential malicious VBS script found (suspicious strings)
Sigma detected: File With Uncommon Extension Created By An Office Application
Sigma detected: Script Initiated Connection to Non-Local Network
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Download SVG
Score:
1%
Verdict:
Benign
File Type:
OFFICE
Link:
https://malprob.io/report/c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea/
Threat name:
Document-Excel.Downloader.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-11-27 03:12:28 UTC
File Type:
Document
Extracted files:
5
AV detection:
21 of 38 (55.26%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqxvuxovtc3jh67dthxcg47jb7ydc2jv5er2qgzzyrya733a4dva._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery macro xlm
Link:
https://tria.ge/reports/240910-dtlzzathrr/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://syracuse.best/wp-data.php
https://skill.fashion/wp-data.php
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c2637d91-f522-4f9e-a889-286fb1172f03
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ZLoader

Excel file xlsx c42f5a5dd598b693fbe399ee2373e90ff0316935e923a81b39c4700fef60e0ea

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/874852/
  
Delivery method
Distributed via web download

Comments