MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35. 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: 5

Intelligence 8 IOCs YARA File information Comments

SHA256 hash:	1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35
SHA3-384 hash:	18f016bbe4ff3be912bb74c8e2fa714426ec36e6d199c3f18ff83ee7c1fb3da59c6c9b3195495b1aa06b66861f5b739c
SHA1 hash:	3c9813663f572d55f877ab9a89ce374d31e11f64
MD5 hash:	5a384b152871690cf7967822cc405e55
humanhash:	bakerloo-october-social-solar
File name:	z.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	37'376 bytes
First seen:	2022-02-19 03:24:08 UTC
Last seen:	2022-02-19 04:54:49 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	768:+PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJbNQJrtpxef8XR9m2n:Cok3hbdlylKsgqopeJBWhZFGkE+cL2Nx
TLSH	T123F294E7FAC5ED66CE088775087B42906712EC5157A7938B3398F7293FB1BE08A02157
Reporter	adm1n_usa32
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: 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	27474 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 :

443

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

z.xls

Verdict:

No threats detected

Analysis date:

2022-02-19 03:19:27 UTC

Tags:

macros macros40

Link:

https://app.any.run/tasks/b1c01ceb-06ae-4611-8224-5273e8c2d259

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:

n/a

Link:

https://www.capesandbox.com/analysis/242620/

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

Сreating synchronization primitives

Changing a file

Creating a window

Searching for synchronization primitives

Sending a custom TCP request

DNS request

Creating a file in the %AppData% subdirectories

Moving a file to the %AppData% subdirectory

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35/results/dashboard

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

exploit macros macros-on-open zloader

Link:

https://www.filescan.io/uploads/62106310875593a3cce982e1/reports/f5d6db71-34de-4f9e-bed3-673574a7cd5a/overview

Label:

Malicious

Suspicious Score:

9.9/10

Score Malicious:

Score Benign:

Link:

https://www.malware.ai/gui/files/?id=c5e5cb21-242c-411d-ad18-2a8ea57e3f2b

Result

Threat name:

Unknown

Detection:

malicious

Classification:

expl.evad.troj

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/942518

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/1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35/

Threat name:

Document-Excel.Trojan.ZLoader

Status:

Malicious

First seen:

2020-11-29 02:58:15 UTC

AV detection:

18 of 28 (64.29%)

Threat level:

5/5

Result

Malware family:

n/a

Score:

10/10

Tags:

macro xlm

Link:

https://tria.ge/reports/220219-h5jffahcd9/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies data under HKEY_USERS

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Drops file in Windows directory

Process spawned unexpected child process

Malware Config

Dropper Extraction:

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

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/1f84394df24e/report/overview.html

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

Threat name:

Legit

Score:

0.20

Link:

https://yomi.yoroi.company/submissions/1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35

File information

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

Web download

ZLoader

xls 1f84394df24e1b599816da3c9af111b368dafa899c3849e03608cbefa57e3a35

(this sample)

Cape

https://www.capesandbox.com/analysis/242620/

URLhaus

https://urlhaus.abuse.ch/url/874929/

Delivery method

Distributed via web download

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