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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac7da8e9dada0cd7e7682457664b8b086f6fc438d254e4db2d3346fc7e2f5c98. 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: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac7da8e9dada0cd7e7682457664b8b086f6fc438d254e4db2d3346fc7e2f5c98
SHA3-384 hash: 89d34ea73992fa0e571d5b5c5fd9804162f5d9e01e631e96639b9af0073122df6910299ae9cdff043be5ba29a3308b47
SHA1 hash: d1a2505e271cc6f91c56aa9e60a7ffae998185a9
MD5 hash: 96b14a6c053807e0230e30e553f2b876
humanhash: football-gee-finch-delaware
File name:Invoice.3329.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:256'512 bytes
First seen:2020-08-05 16:56:55 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:hk3hbdlylKsgqopeJBWhZFVE+W2NdA8qQ1RJaIRcC78zyY94yXgcB1aJL0TAPqhc:dQ1RJgzyY9awy
TLSH 4C441E61D2805B6BCEC38839776B49D033D7B62C66183E8EB9DD7624FB0EB52471818D
Reporter Anonymous
Tags:macros ZLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.Excel4PaperPlanes.20200705.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderMustHaveBeenLoveButItsOverNowConditionallyBasedOnEnv.20200804.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process with a hidden window
Deleting a recently created file
Possible injection to a system process
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Result
Threat name:
Hidden Macro 4.0
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Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/411691
Signature
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found abnormal large hidden Excel 4.0 Macro sheet
Found Excel 4.0 Macro with suspicious formulas
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Execute DLL with spoofed extension
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Office product drops script at suspicious location
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac7da8e9dada0cd7e7682457664b8b086f6fc438d254e4db2d3346fc7e2f5c98/
Threat name:
Document-Word.Downloader.EncDoc
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Status:
Malicious
First seen:
2020-08-05 16:58:06 UTC
File Type:
Document
Extracted files:
3
AV detection:
15 of 29 (51.72%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vr62r2o23ignpz3ierlwms4lbbxw7rby2jkojwzngndpy7rplsma._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200805-z17zvjjvwe/
Behaviour
Suspicious Office macro
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
ZLoader
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ac7da8e9dada0cd7e7682457664b8b086f6fc438d254e4db2d3346fc7e2f5c98

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:ach_ZLoader_xls_20200804
Create hunting rule
Author:abuse.ch
Description:Detects ZLoader XLS
Rule name:msxls_zloader_anti_sandbox_biff_formula
Create hunting rule
Description:Finding XLS2003 documents with a specific anti-sandbox expression
Rule name:msxls_zloader_formula_ptg_ref_num_add_count
Create hunting rule
Description:Finding XLS2003 documents with a large number of PtgRef->PtgAdd->PtgNum entries
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples

File information

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

Malspam

ZLoader

Excel file xls ac7da8e9dada0cd7e7682457664b8b086f6fc438d254e4db2d3346fc7e2f5c98

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments