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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f66b8ee9bea7ec406c6a88ccfb54c447afc3e4c44ae08c071b97beb74b66e2eb. 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: 7


Maldoc score: 3


Intelligence 7 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f66b8ee9bea7ec406c6a88ccfb54c447afc3e4c44ae08c071b97beb74b66e2eb
SHA3-384 hash: bd1d52d36e6494a478f1a7e254cdd1b5a444b6fb09738c8c10de556138dca591865303aa473c50cdb57fd8b4200b2e1b
SHA1 hash: e5fdf654d2dbcd1936327a49fce654b66e6fbc86
MD5 hash: 8d032792c133999688928c90de24ae19
humanhash: freddie-jupiter-july-october
File name:info_cl.1856.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:32'256 bytes
First seen:2021-01-21 18:29:35 UTC
Last seen:2021-01-21 21:05:43 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:hPXk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJtnYI+S8Twc84:JXk3hbdlylKsgqopeJBWhZFGkE+cL2N7
TLSH 2EE23EA7F6C6AC46CE590339487783A0B722FC515B67938B3349F7291F71AC0890365B
Reporter abuse_ch
Tags:xls 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
322143 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 :
2
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
info_cl.1856.xls
Verdict:
No threats detected
Analysis date:
2021-01-21 18:32:45 UTC
Tags:
macros
Link:
https://app.any.run/tasks/142358be-5600-40a7-b63d-76fe64af6c07

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:
True
Detection(s):
TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
Create hunting rule

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

TwinWave.EvilDoc.Zloader.ComfortablyNumb.M3.20201208.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/f66b8ee9bea7ec406c6a88ccfb54c447afc3e4c44ae08c071b97beb74b66e2eb/results/dashboard
Result
Threat name:
Unknown
Detection:
malicious
Classification:
n/a
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/587651
Signature
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f66b8ee9bea7ec406c6a88ccfb54c447afc3e4c44ae08c071b97beb74b66e2eb/
Threat name:
Script-Macro.Downloader.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2021-01-21 18:30:09 UTC
AV detection:
9 of 46 (19.57%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6zvy52n6u7wea3dkrdgpwvgei6x4hzgejlqiyby3s67los3g4lvq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro ransomware xlm
Link:
https://tria.ge/reports/210121-s9k6k98a4x/
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Checks processor information in registry
Enumerates physical storage devices
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/f66b8ee9bea7ec406c6a88ccfb54c447afc3e4c44ae08c071b97beb74b66e2eb

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Comments