MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d20d8877e1d1e62df37b77b9407360cd71db4b5fab218b7bef4d43c47371bbb6. 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: 5

Intelligence 5 IOCs YARA 5 File information Comments

SHA256 hash:	d20d8877e1d1e62df37b77b9407360cd71db4b5fab218b7bef4d43c47371bbb6
SHA3-384 hash:	bfb58e842eb971ad717166407a154df5eda23a42b4d0ad08b4843294d79e1763e8db6e7f8ac2ecdf52de55082797f078
SHA1 hash:	c0dc593fa38b644cd08a53b2058a0499009fd23f
MD5 hash:	391aa700c2d3f6a4f8cb2627abaf351f
humanhash:	tennessee-table-shade-colorado
File name:	invoice8984.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	46'080 bytes
First seen:	2020-11-06 07:24:09 UTC
Last seen:	2020-11-06 08:43:28 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	768:rPXk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJ+JUBjJoANa3x/dn2NiWNSo8DAQXwS:TXk3hbdlylKsgqopeJBWhZFGkE+cL2NR
TLSH	AA2381E3AB96DD65CA048335099F41606732EC41576B83877394F739BFB5FB09A02287
Reporter	abuse_ch
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	6 bytes	DocumentSummaryInformation
2	6 bytes	SummaryInformation
3	3 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 :

119

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL

TwinWave.EvilDoc.ZloadersAreStrange.20201105.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file

Creating a process with a hidden window

Deleting a recently created file

Replacing files

Launching a process

Possible injection to a system process

Launching a process by exploiting the app vulnerability

Creating a process from a recently created file

Result

Threat name:

Hidden Macro 4.0

Detection:

malicious

Classification:

expl.evad

Score:

96 / 100

Link:

https://www.joesandbox.com/analysis/522250

Signature

Document exploit detected (creates forbidden files)

Document exploit detected (process start blacklist hit)

Found Excel 4.0 Macro with suspicious formulas

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)

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/d20d8877e1d1e62df37b77b9407360cd71db4b5fab218b7bef4d43c47371bbb6/

Threat name:

Document-Word.Trojan.ZLoader

Status:

Malicious

First seen:

2020-11-06 05:10:20 UTC

AV detection:

16 of 29 (55.17%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=2igyq57b2htc3433o64ua43azvy5ws27vmqyw67pjvb4i43rxo3a._file

Result

Malware family:

n/a

Score:

10/10

Tags:

n/a

Link:

https://tria.ge/reports/201106-e91qfa5bh2/

Behaviour

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Checks processor information in registry

Modifies registry class

Process spawned unexpected child process

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:	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.

Malspam

ZLoader

xls d20d8877e1d1e62df37b77b9407360cd71db4b5fab218b7bef4d43c47371bbb6

(this sample)

Delivery method

Distributed via e-mail attachment

Comments

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