MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6fc69f553c079f20ec20e3e95eb342658dbeef6349acbe50578c550deb3d16b6. 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

Intelligence 6 IOCs YARA 4 File information Comments

SHA256 hash:	6fc69f553c079f20ec20e3e95eb342658dbeef6349acbe50578c550deb3d16b6
SHA3-384 hash:	874d5e7072fb6104772affbbe91095c999e26e742f1793c5b160f70274caf55048f39a09abeceb4c0ad0c3ad18f70736
SHA1 hash:	00288466559816453d5b311bfdfa0aa8575d5c68
MD5 hash:	91077613e9979e5a83f3af3af597011f
humanhash:	uniform-aspen-purple-william
File name:	2705jgua.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	253'952 bytes
First seen:	2020-08-05 16:09:45 UTC
Last seen:	Never
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	6144:zk3hbdlylKsgqopeJBWhZFVE+W2NdANq+NWpAX318SL8FOLWf4vksmIfKRfcShXP:W+R18SL8FOLWfLrXfcShXL1vzRxDN
TLSH	224497E5D6854FA4CDD399792BBB83C113007D3C6E46EBAEA180B6607FCB160671C5CA
Reporter	malware_traffic
Tags:	macros xls ZLoader

Intelligence

File Origin

# of uploads :

# of downloads :

108

Origin country :

n/a

Vendor Threat Intelligence

Detection(s):

TwinWave.EvilDoc.Excel4PaperPlanes.20200705.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL

TwinWave.EvilDoc.ZloaderMustHaveBeenLoveButItsOverNowConditionallyBasedOnEnv.20200804.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Creating a process with a hidden window

Deleting a recently created file

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:

100 / 100

Link:

https://www.joesandbox.com/analysis/411275

Signature

Document exploit detected (creates forbidden files)

Document exploit detected (process start blacklist hit)

Found abnormal large hidden Excel 4.0 Macro sheet

Found Excel 4.0 Macro with suspicious formulas

Injects code into the Windows Explorer (explorer.exe)

Microsoft Office drops suspicious files

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: Office product drops script at suspicious location

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/6fc69f553c079f20ec20e3e95eb342658dbeef6349acbe50578c550deb3d16b6/

Threat name:

Document-Word.Downloader.EncDoc

Status:

Malicious

First seen:

2020-08-05 16:11:07 UTC

File Type:

Document

Extracted files:

AV detection:

15 of 29 (51.72%)

Threat level:

3/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=n7dj6vj4a6psb3ba4puv5m2cmwg3533djgwl4ucxrrkq32z5c23a._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/200805-j2znd9n7ja/

Behaviour

Suspicious Office macro

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/6fc69f553c079f20ec20e3e95eb342658dbeef6349acbe50578c550deb3d16b6

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_20200804 Create hunting rule
Author:	abuse.ch
Description:	Detects ZLoader XLS

Rule name:	msxls_zloader_anti_sandbox_biff_formula Create hunting rule
Description:	Finding XLS2003 documents with a specific anti-sandbox expression

Rule name:	msxls_zloader_formula_ptg_ref_num_add_count Create hunting rule
Description:	Finding XLS2003 documents with a large number of PtgRef->PtgAdd->PtgNum entries