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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31. 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: 8


Maldoc score: 3


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31
SHA3-384 hash: 4629941043d9152097b84c70f205276c84f6417ba3154f2192e9ba2c4e7cdf1db70804887db635d52074af503be43538
SHA1 hash: 85fb9debaf5cd3b3e528f2273c134c8d71033172
MD5 hash: 40c4be0a32ba7510bbd07dd68d501c7b
humanhash: music-summer-november-mountain
File name:pay-9898.xls
Download: download sample
Signature ZLoader
Create hunting rule
File size:32'256 bytes
First seen:2021-01-20 17:33:31 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 768:KPXk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJPyMWNhpFa8Z:eXk3hbdlylKsgqopeJBWhZFGkE+cL2NH
TLSH 04E25FE7B7C6AC45CE65437948A782907722FC512B67838B3348F7266FB1BC04A4356B
Reporter ffforward
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
322100 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 :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
pay-9898.xls
Verdict:
Malicious activity
Analysis date:
2021-01-20 17:34:36 UTC
Tags:
macros
Link:
https://app.any.run/tasks/c772333c-417e-41cc-95e8-bbbf731cd5c9

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:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file
Creating a process with a hidden window
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Office File
Link:
https://app.docguard.net/2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31/results/dashboard
Result
Threat name:
Unknown
Detection:
malicious
Classification:
spre.expl.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/586525
Signature
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
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Potential malicious VBS script found (has network functionality)
Potential malicious VBS script found (suspicious strings)
System process connects to network (likely due to code injection or exploit)
Yara detected Run DLL Via DCOM
Yara detected VBS Downloader Generic
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fsdb7gkdtvidjqcuby2smxnyxlqcnliom4cvrqag6f7qmtdib4yq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro ransomware xlm
Link:
https://tria.ge/reports/210120-71kdz73bjx/
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
JavaScript code in executable
Malware Config
Dropper Extraction:
http://www.liceovirreysolis.com/server.php
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/2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31

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.

Malspam

ZLoader

Excel file xls 2c861f99439d5034c0540e35265db8bae026ad0e670558c006f17f064c680f31

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments