MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8fa13a30c610528e3dfa807d8a8bceb67393f35fae3a11edcd35d9f0a6aff0d3. 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: 6

Maldoc score: 5

Intelligence 6 IOCs YARA 5 File information Comments

SHA256 hash:	8fa13a30c610528e3dfa807d8a8bceb67393f35fae3a11edcd35d9f0a6aff0d3
SHA3-384 hash:	b5d56a6f5c43e89973b3d552a413eb069323f23efdd98b6e66b184e955b8f94e2063da646b551d1c423de9826e631fcb
SHA1 hash:	c5500b41d71a527fce87a713861cebe9b9b5b4e8
MD5 hash:	e72c93efc79c10847f8a3284f294495b
humanhash:	cup-fifteen-ceiling-xray
File name:	SecuriteInfo.com.Heur.22446.7520
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	37'376 bytes
First seen:	2020-12-01 01:48:54 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	768:0PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJStKiaBSdxWNiqZlfEl:wok3hbdlylKsgqopeJBWhZFGkE+cL2N/
TLSH	9EF2A4E3FBD5EC66CE484335487B82906722EC9157AB938B7345F7293FB17A09902247
Reporter	SecuriteInfoCom
Tags:	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	27320 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 :

109

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

SecuriteInfo.com.Heur.22446.7520.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file

Creating a process with a hidden window

DNS request

Possible injection to a system process

Launching a process by exploiting the app vulnerability

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

Legacy Office File

Link:

https://app.docguard.net/8fa13a30c610528e3dfa807d8a8bceb67393f35fae3a11edcd35d9f0a6aff0d3/results/dashboard

Result

Threat name:

Unknown

Detection:

malicious

Classification:

spre.expl.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/551666

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

Multi AV Scanner detection for submitted file

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 VBS Downloader Generic

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/8fa13a30c610528e3dfa807d8a8bceb67393f35fae3a11edcd35d9f0a6aff0d3/

Threat name:

Document-Office.Trojan.ZLoader

Status:

Malicious

First seen:

2020-12-01 01:49:04 UTC

AV detection:

10 of 28 (35.71%)

Threat level:

5/5

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/201201-dx5hn6g232/

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

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/8fa13a30c610528e3dfa807d8a8bceb67393f35fae3a11edcd35d9f0a6aff0d3

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.

No further information available

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