MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 af484c821adb6a5303096d638c43bb61f7e6b18a0573b5bbfeed0b162f8581b7. 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:	af484c821adb6a5303096d638c43bb61f7e6b18a0573b5bbfeed0b162f8581b7
SHA3-384 hash:	1559a824aad1e4d797c7ec69dbbf24e280e3536ea815dfbcb661f3358db5212c30e2bb2e89aef0f2bee573998a7151d3
SHA1 hash:	58f4e577e7d4cfa4b25b0558f7e13a656cb66b68
MD5 hash:	46054af043d9a84688ed818e3aa69983
humanhash:	speaker-bakerloo-gee-montana
File name:	keo4928.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	259'584 bytes
First seen:	2020-08-05 16:10:46 UTC
Last seen:	Never
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	6144:uk3hbdlylKsgqopeJBWhZFVE+W2NdAPb/S4v8zORk2wKaNLRUfgJOxKswIV:QOoZRkbRUIJkK9IV
TLSH	D044FAA0D1445B15CEC38E354B6F8EC533927D2CE7198E9EAAC03B24FA4E0615B4D5BE
Reporter	malware_traffic
Tags:	macros xls ZLoader

Intelligence

File Origin

# of uploads :

# of downloads :

118

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/411646

Signature

Document exploit detected (creates forbidden files)

Document exploit detected (process start blacklist hit)

Document exploit detected (UrlDownloadToFile)

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)

Sigma detected: Execute DLL with spoofed extension

Sigma detected: Microsoft Office Product Spawning Windows Shell

Sigma detected: Office product drops script at suspicious location

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/af484c821adb6a5303096d638c43bb61f7e6b18a0573b5bbfeed0b162f8581b7/

Threat name:

Document-Word.Downloader.EncDoc

Status:

Malicious

First seen:

2020-08-05 16:12:06 UTC

File Type:

Document

Extracted files:

AV detection:

15 of 28 (53.57%)

Threat level:

3/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=v5eezaq23nvfgayjnvryyq53mh36nmmkavz3lo765ufrml4fqg3q._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/200805-s9rnh1w4me/

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/af484c821adb6a5303096d638c43bb61f7e6b18a0573b5bbfeed0b162f8581b7

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