MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870. 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: 5

Maldoc score: 12

Intelligence 5 IOCs YARA 10 File information Comments

SHA256 hash:	cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870
SHA3-384 hash:	bbd632e621179758a38075344cd21894ecb96a849a288e1ecbf51211fd7d32d4215af81fcf541a0962f0c99b83ddc07b
SHA1 hash:	6cf4a85af842c42825940c66cf5ac579a3f0b531
MD5 hash:	c879be8f24b91b3b6ef06c248bea8239
humanhash:	mirror-mike-oven-early
File name:	cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	87'552 bytes
First seen:	2021-04-23 20:31:43 UTC
Last seen:	2021-04-23 21:40:07 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	1536:vFk3hbdlylKsgqopeJBWhZFGkE+cL2NdAv7hLTvSQW6TJraqWIM3yXJHu3b8aTMY:vFk3hbdlylKsgqopeJBWhZFGkE+cL2Nb
TLSH	C9835C5AB2C6D906D995073A8CE6D7E63322BC515F57C34F3288FB2E1F727848A02647
Reporter	bigmacjpg
Tags:	Dridex 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: 12

Application name is unknown

Office document is in OLE format

OLE dump

MalwareBazaar was able to identify 16 sections in this file using oledump:

Section ID	Section size	Section name
1	108 bytes	CompObj
2	300 bytes	DocumentSummaryInformation
3	128 bytes	SummaryInformation
4	64040 bytes	Workbook

OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

Type	Keyword	Description
Suspicious	Run	May run an executable file or a system command
Suspicious	Lib	May run code from a DLL
Suspicious	URLDownloadToFileA	May download files from the Internet
Suspicious	Chr	May attempt to obfuscate specific strings (use option --deobf to deobfuscate)
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
Suspicious	Base64 Strings	Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin

# of uploads :

# of downloads :

270

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870.xls

Verdict:

No threats detected

Analysis date:

2021-04-24 08:26:10 UTC

Tags:

macros macros40

Link:

https://app.any.run/tasks/0cf7be32-13fb-4395-baca-2059c30ebb69

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Verdict:

Legit

File type:

application/vnd.ms-excel

Has a screenshot:

False

Contains macros:

True

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/143943/

Detection(s):

Sanesecurity.Rogue.0hr.20200622-1311.MacroImg.UNOFFICIAL

TwinWave.EvilDoc.Excel4DownloaderIWouldDie4U.20210201.UNOFFICIAL

Result

Verdict:

Clean

Maliciousness:

Behaviour

Creating a window

Result

Verdict:

Malicious

File Type:

Legacy Office File

Link:

https://app.docguard.net/cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870/results/dashboard

Payload URLs

URL

File name

Module1.PAGE_REVIEW

WorkBook

Document image

Image:

Download PNG

Result

Threat name:

Hidden Macro 4.0

Detection:

malicious

Classification:

expl

Score:

52 / 100

Link:

https://www.joesandbox.com/analysis/696015

Signature

Multi AV Scanner detection for submitted file

Yara detected hidden Macro 4.0 in Excel

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/cb3c1cef71edcfdb4097fcf20e55646c69636fb8b7bf295568de7ede8d75a870/

Threat name:

Document-Word.Downloader.Heuristic

Status:

Malicious

First seen:

2021-04-22 16:44:00 UTC

AV detection:

5 of 29 (17.24%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=zm6bz33r5xh5wqex7tza4vlenruwg35yw67ssvli3z7n5dlvvbya._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/210423-9xh8j6n8rj/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Please note that we are no longer able to provide a coverage score for Virus Total.

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_20201029 Create hunting rule
Author:	abuse.ch
Description:	Detects ZLoader XLS

Rule name:	Email_stealer_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	Email in files like avemaria

Rule name:	Excel_Hidden_Macro_Sheet Create hunting rule

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

Rule name:	ZloaderXLSBehavior Create hunting rule

File information

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

Cape

https://www.capesandbox.com/analysis/143943/

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