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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ae076bf7be3271f403e668ff6e613ff59a0078fe18717ec4030665d65ff91f9. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8ae076bf7be3271f403e668ff6e613ff59a0078fe18717ec4030665d65ff91f9
SHA3-384 hash: f0c858503505bc9764b034131abc6e8aacf9bc131741e44cb912fbf812988b0d9dcd60d8dd40785cf4be57124aca80bf
SHA1 hash: bfc554d0644ca2b877235dfeba3ebe007e9a12fd
MD5 hash: 33f63e0b39761740aaec2ef868be007a
humanhash: alaska-johnny-vermont-river
File name:ru1732.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:259'072 bytes
First seen:2020-08-08 07:03:43 UTC
Last seen:2020-08-08 07:43:34 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Qk3hbdlylKsgqopeJBWhZFVE+W2NdAginQhqZ4Uiy9rcIlTNU0h:ReQhuisrpTh
TLSH 4144DAB1E2704EA4DEC3BA758E4B57D033D6BA3CE5098ECF75C476643A1E061871D28A
Reporter abuse_ch
Tags:xls Yahoo ZLoader


Avatar
abuse_ch
Malspam distributing ZLoader:

HELO: sonic309-21.consmr.mail.ne1.yahoo.com
Sending IP: 66.163.184.147
From: Enzo Andersen <ruth.robinson97@aol.com>
Reply-To: Enzo Andersen <ruth.robinson97@aol.com>
Subject: Your Unpaid Invoice
Attachment: ru1732.xls

Intelligence

File Origin
# of uploads :
2
# of downloads :
103
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.Excel4PaperPlanes.20200705.UNOFFICIAL
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TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
Create hunting rule

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/415674
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/8ae076bf7be3271f403e668ff6e613ff59a0078fe18717ec4030665d65ff91f9/
Threat name:
Document-Word.Trojan.ZLoader
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Status:
Malicious
First seen:
2020-08-08 07:05:08 UTC
AV detection:
13 of 48 (27.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rlqhnp334mtr6qb6m2h7nzqt75m2ab4p4gdrp3cagbtf2zp7sh4q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200808-519ed34tes/
Behaviour
Suspicious Office macro
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/8ae076bf7be3271f403e668ff6e613ff59a0078fe18717ec4030665d65ff91f9

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 8ae076bf7be3271f403e668ff6e613ff59a0078fe18717ec4030665d65ff91f9

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments