MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4897710503ff7fd1f07c8590ef42583fd149b0f6749b56b6aa7a775f90cb49d. 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: 5

Intelligence 7 IOCs YARA File information Comments

SHA256 hash:	b4897710503ff7fd1f07c8590ef42583fd149b0f6749b56b6aa7a775f90cb49d
SHA3-384 hash:	11dfa1039025c13703d86098fb46404ccb8d778d2dcefc878401f51af1da0e9611fb45b83bf6583a738154d6a14ec449
SHA1 hash:	a2c4e0aaf93ce639be911bbc495f2ed09fbdb5de
MD5 hash:	8709710c465faee0c68c914eb13dbaef
humanhash:	enemy-stream-mississippi-seventeen
File name:	test.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	37'376 bytes
First seen:	2022-02-11 22:05:11 UTC
Last seen:	2022-02-11 23:50:50 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	768:GPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ7vH8Dek241dWCgRZ:6ok3hbdlylKsgqopeJBWhZFGkE+cL2Ne
TLSH	T1FEF2A4F3A6D9DC69CE488339446B4291A312FC9157AB978B7348F7317FB1BA08912317
Reporter	adm1n_usa32
Tags:	xls ZLoader

adm1n_usa32

low detection on VT

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: 5

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 ID	Section size	Section name
1	4096 bytes	DocumentSummaryInformation
2	4096 bytes	SummaryInformation
3	27394 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
AutoExec	Auto_Open	Runs when the Excel Workbook is opened
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 :

377

Origin country :

n/a

Vendor Threat Intelligence

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/240993/

Detection(s):

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL

TwinWave.EvilDoc.Excel4.BlackSubmarines.2020.UNOFFICIAL

TwinWave.EvilDoc.ZloaderGasPanic.20210216.UNOFFICIAL

TwinWave.EvilDoc.Excel4UnicodeTransPoseReadyOrNot.ENABLE.M2.210222.UNOFFICIAL

TwinWave.EvilDoc.Excel4UnicodeTransPoseReadyOrNot.ENABLE.210222.UNOFFICIAL

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.M2.20201116.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

DNS request

Creating a window

Сreating synchronization primitives

Searching for synchronization primitives

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/b4897710503ff7fd1f07c8590ef42583fd149b0f6749b56b6aa7a775f90cb49d/results/dashboard

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

macros macros-on-open zloader

Link:

https://www.filescan.io/uploads/6206ddce289e2f3e4fc57c5b/reports/40692a81-fc90-48a6-aeae-afe4e5d8aaf0/overview

Label:

Malicious

Suspicious Score:

9.9/10

Score Malicious:

Score Benign:

Link:

https://www.malware.ai/gui/files/?id=3209bc70-b6c4-4930-9296-0d76e16edbbe

Result

Threat name:

Unknown

Detection:

malicious

Classification:

expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/938620

Signature

Antivirus / Scanner detection for submitted sample

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

Multi AV Scanner detection for submitted file

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)

Sigma detected: WScript or CScript Dropper

System process connects to network (likely due to code injection or exploit)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b4897710503ff7fd1f07c8590ef42583fd149b0f6749b56b6aa7a775f90cb49d/

Threat name:

Document-Excel.Trojan.ZLoader

Status:

Malicious

First seen:

2020-11-30 07:57:48 UTC

File Type:

Document

Extracted files:

AV detection:

22 of 43 (51.16%)

Threat level:

5/5

Result

Malware family:

n/a

Score:

10/10

Tags:

macro xlm

Link:

https://tria.ge/reports/220211-1z3k8sdcf6/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Drops file in Windows directory

Blocklisted process makes network request

Process spawned unexpected child process

Malware Config

Dropper Extraction:

https://statedauto.com/wp-data.php
https://markens.online/wp-data.php

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

File information

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

Web download

ZLoader

xls b4897710503ff7fd1f07c8590ef42583fd149b0f6749b56b6aa7a775f90cb49d

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/876397/

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/240993/

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