MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b2c08ccb475bdd4767c584f58ca515b8991e7c9313fe2cc3c7329b47dc40c1. 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: 8

Maldoc score: 12

Intelligence 8 IOCs YARA 9 File information Comments

SHA256 hash:	a4b2c08ccb475bdd4767c584f58ca515b8991e7c9313fe2cc3c7329b47dc40c1
SHA3-384 hash:	a7d905537fdce48a0d455c2160c7c92a9d407d200d29f3039e537bcb83ad428489c79f13231ef52a83d34fa78edae1ab
SHA1 hash:	61aa55f50938b2fe100ec9b65160c8a90f1789e2
MD5 hash:	e259dfe9d4e77c25be763f9db1653e15
humanhash:	friend-oscar-bakerloo-quiet
File name:	Payment_Receipt 1726.xls
Download:	download sample
Signature	ZLoader Create hunting rule
File size:	58'880 bytes
First seen:	2021-03-31 16:49:51 UTC
Last seen:	2021-04-01 05:51:02 UTC
File type:	xls
MIME type:	application/vnd.ms-excel
ssdeep	1536:X0Fk3hbdlylKsgqopeJBWhZFGkE+cL2NdADRih43mtRQnc6ReXvmMi:EFk3hbdlylKsgqopeJBWhZFGkE+cL2NA
TLSH	3D43D796B785E856C94907364CE6D6E63322BC11AF57C34F3248F72E5F76B808E02A47
Reporter	Jazzo74911657
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: 12

Application name is unknown

Office document is in OLE format

Office document contains VBA Macros

OLE dump

MalwareBazaar was able to identify 16 sections in this file using oledump:

Section ID	Section size	Section name
1	108 bytes	CompObj
2	292 bytes	DocumentSummaryInformation
3	176 bytes	SummaryInformation
4	36317 bytes	Workbook
5	520 bytes	_VBA_PROJECT_CUR/PROJECT
6	107 bytes	_VBA_PROJECT_CUR/PROJECTwm
7	5338 bytes	_VBA_PROJECT_CUR/VBA/Module1
8	991 bytes	_VBA_PROJECT_CUR/VBA/Sheet1
9	991 bytes	_VBA_PROJECT_CUR/VBA/Sheet2
10	999 bytes	_VBA_PROJECT_CUR/VBA/ThisWorkbook
11	3265 bytes	_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
12	2042 bytes	_VBA_PROJECT_CUR/VBA/__SRP_0
13	328 bytes	_VBA_PROJECT_CUR/VBA/__SRP_1
14	504 bytes	_VBA_PROJECT_CUR/VBA/__SRP_2
15	682 bytes	_VBA_PROJECT_CUR/VBA/__SRP_3
16	579 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
Suspicious	Run	May run an executable file or a system command
Suspicious	Lib	May run code from a DLL
Suspicious	URLDownloadToFileA	May download files from the Internet
Suspicious	Chr	May attempt to obfuscate specific strings (use option --deobf to deobfuscate)
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 :

144

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Payment_Receipt 1726.xls

Verdict:

Suspicious activity

Analysis date:

2021-03-31 16:52:22 UTC

Tags:

macros macros40

Link:

https://app.any.run/tasks/7fdf8791-7d4a-4909-9dfa-e5aee7feb9fc

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/129606/

Detection(s):

TwinWave.EvilDoc.DridexSureShot.20210301.UNOFFICIAL

TwinWave.EvilDoc.DridexSureShot.M2.20210301.UNOFFICIAL

Sanesecurity.Badmacro.XlsM.Urlspl.UNOFFICIAL

TwinWave.EvilDoc.Excel4DownloaderIWouldDie4U.20210201.UNOFFICIAL

Result

Verdict:

Clean

Maliciousness:

Behaviour

Creating a window

Result

Verdict:

Malicious

File Type:

Legacy Excel File with Macro

Link:

https://app.docguard.net/a4b2c08ccb475bdd4767c584f58ca515b8991e7c9313fe2cc3c7329b47dc40c1/results/dashboard

Payload URLs

URL

File name

Module1.Documents_VIEW

WorkBook

Document image

Image:

Download PNG

Result

Threat name:

Hidden Macro 4.0 Dridex

Detection:

malicious

Classification:

bank.troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/660676

Signature

C2 URLs / IPs found in malware configuration

Detected Dridex e-Banking trojan

Document contains an embedded VBA macro which may execute processes

Document contains an embedded VBA macro with suspicious strings

Document exploit detected (creates forbidden files)

Document exploit detected (drops PE files)

Document exploit detected (process start blacklist hit)

Document exploit detected (UrlDownloadToFile)

Found malware configuration

Office process drops PE file

Sigma detected: BlueMashroom DLL Load

Sigma detected: Microsoft Office Product Spawning Windows Shell

Sigma detected: Regsvr32 Anomaly

System process connects to network (likely due to code injection or exploit)

Yara detected Dridex unpacked file

Yara detected hidden Macro 4.0 in Excel

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a4b2c08ccb475bdd4767c584f58ca515b8991e7c9313fe2cc3c7329b47dc40c1/

Threat name:

Document-Office.Infostealer.Dridex

Status:

Malicious

First seen:

2021-03-31 16:50:13 UTC

File Type:

Document

Extracted files:

AV detection:

10 of 29 (34.48%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=uszmbdgli5n52r3hywcpldffcw4jsht4smj74lgdy4zjwr64idaq._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/210331-2hb8fkjcaj/

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/a4b2c08ccb475bdd4767c584f58ca515b8991e7c9313fe2cc3c7329b47dc40c1

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_20201029 Create hunting rule
Author:	abuse.ch
Description:	Detects ZLoader XLS

Rule name:	dridex_halo_generated Create hunting rule
Author:	Halogen Generated Rule, Corsin Camichel

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

Rule name:	Excel_Hidden_Macro_Sheet Create hunting rule

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:	ZloaderXLSBehavior Create hunting rule

File information

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

Cape

https://www.capesandbox.com/analysis/129606/

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