MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf. 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: 11

Intelligence 7 IOCs YARA 9 File information Comments

SHA256 hash:	78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf
SHA3-384 hash:	f0dedc47c82eac6c930cc5df8574439d41259e6c6b9beca4a932195448a059cc76f2847b989821274241488f0daf41d8
SHA1 hash:	d94435bba9561052120e4a53615e75bac693c957
MD5 hash:	e8ecce7c673d1df0d5186bb60143380e
humanhash:	pip-lamp-zebra-maryland
File name:	New Purchase Order.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	65'024 bytes
First seen:	2021-03-01 07:25:29 UTC
Last seen:	2021-03-01 08:53:57 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	1536:h2k3hbdlylKsgqopeJBWhZFGkE+cL2NdAcKlFHdRh2QPXZvI:h2k3hbdlylKsgqopeJBWhZFGkE+cL2NR
TLSH	06532C56BAB6CC65C65507714DE7C6A12737FC246FF7828B3284F31E1EB3A80AD42246
Reporter	abuse_ch
Tags:	xls ZLoader

abuse_ch

Malspam distributing ZLoader:

HELO: server.axiasource.com
Sending IP: 111.90.146.37
From: Gianni Smarrelli <gianni@pantalonasrl.com>
Subject: RE: REMINDER - RFQ Italy Pantalone Srl
Attachment: New Purchase Order.xls

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: 11

Application name is Microsoft Excel

Office document is in OLE format

Office document contains VBA Macros

OLE dump

MalwareBazaar was able to identify 15 sections in this file using oledump:

Section ID	Section size	Section name
1	108 bytes	CompObj
2	244 bytes	DocumentSummaryInformation
3	224 bytes	SummaryInformation
4	34494 bytes	Workbook
5	542 bytes	_VBA_PROJECT_CUR/PROJECT
6	86 bytes	_VBA_PROJECT_CUR/PROJECTwm
7	9897 bytes	_VBA_PROJECT_CUR/VBA/Module1
8	985 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
9	993 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
10	5167 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
11	3314 bytes	_VBA_PROJECT_CUR/VBA/__SRP_0
12	101 bytes	_VBA_PROJECT_CUR/VBA/__SRP_1
13	1614 bytes	_VBA_PROJECT_CUR/VBA/__SRP_2
14	160 bytes	_VBA_PROJECT_CUR/VBA/__SRP_3
15	572 bytes	_VBA_PROJECT_CUR/VBA/dir

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_close	Runs when the Excel Workbook is closed
Suspicious	Write	May write to a file (if combined with Open)
Suspicious	Create	May execute file or a system command through WMI
Suspicious	CreateObject	May create an OLE object
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 :

138

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

New Purchase Order.xls

Verdict:

Suspicious activity

Analysis date:

2021-03-01 07:27:08 UTC

Tags:

macros macros-on-close

Link:

https://app.any.run/tasks/1438bfc3-8491-421c-90e0-acab98657e89

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/120124/

Detection(s):

SecuriteInfo.com.Scr.Malcodegen.6309.9759.UNOFFICIAL

Result

Verdict:

Clean

Maliciousness:

Behaviour

Creating a window

Result

Verdict:

Suspicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf/results/dashboard

Result

Threat name:

AveMaria

Detection:

malicious

Classification:

phis.troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/621738

Signature

Bypasses PowerShell execution policy

Connects to a URL shortener service

Connects to many ports of the same IP (likely port scanning)

Contains functionality to hide user accounts

Contains functionality to inject threads in other processes

Contains functionality to steal Chrome passwords or cookies

Contains functionality to steal e-mail passwords

Creates an autostart registry key pointing to binary in C:\Windows

Creates processes via WMI

Document contains an embedded VBA macro which may execute processes

Document contains an embedded VBA macro with suspicious strings

Hides that the sample has been downloaded from the Internet (zone.identifier)

Increases the number of concurrent connection per server for Internet Explorer

Injects a PE file into a foreign processes

Malicious sample detected (through community Yara rule)

Suspicious powershell command line found

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Mail credentials (via file access)

Writes to foreign memory regions

Yara detected AveMaria stealer

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf/

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=pakxuhpzdpy3m3vslgrch62y2gkrqwx7dnizyaaug2cfr7mcxo7q._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/210301-j2fvjk1rps/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Office loads VBA resources, possible macro or embedded object present

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf

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_20210125 Create hunting rule
Author:	abuse.ch
Description:	Detects ZLoader XLS

Rule name:	adonunix Create hunting rule
Author:	Tim Brown @timb_machine
Description:	AD on UNIX

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

Rule name:	INDICATOR_PPT_MasterMana Create hunting rule
Author:	ditekSHen
Description:	Detects known malicious pattern (MasterMana) in PowerPoint documents.

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:	ZloaderXLSInvoice Create hunting rule

File information

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

Malspam

ZLoader

xls 78157a1df91bf1b66eb259a223fb58d195185aff1b519c0014368458fd82bbbf

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/120124/

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