MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d. 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

Dridex

Vendor detections: 8

Maldoc score: 11

Intelligence 8 IOCs YARA 8 File information Comments

SHA256 hash:	f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d
SHA3-384 hash:	964bcd533a38b48b5b292f4016c0891b2fda1d89ef537de8954062f7fcbdc5bcf23c090cd399ac432a11243da187126e
SHA1 hash:	ef4b0244623220dabbc9317b930df957fa9c48d9
MD5 hash:	d5b40faa134ee1e73233e521ac476cdd
humanhash:	beer-venus-sink-sixteen
File name:	12072020_586621_2778869.xlsm
Download:	download sample
Signature	Dridex Create hunting rule
File size:	45'852 bytes
First seen:	2020-12-07 16:27:18 UTC
Last seen:	2020-12-10 06:25:40 UTC
File type:	xlsm
MIME type:	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep	768:txoIhI0Wxf06sndKIVmAM15xbSKDvcr5EiS2ZIn3kAfB+1cfkOvdoOVqR9VqAn:tKZadIsmAQ5xbSKgr5PSaI5MefR5qR9t
TLSH	7723E00BA616F80DE139D13CC14425B5CE0E32A26944F36E3BC8B8DD56469F72356ABB
Reporter	cocaman
Tags:	Dridex xlsm

cocaman

Malicious email (T1566.001)
From: "Paychex <NoReplyNecessary@paychex.com>" (likely spoofed)
Received: "from 188.241.121.171.tvhcc.ro (unknown [188.241.121.171]) "
Date: "Mon, 7 Dec 2020 23:08:27 +0200"
Subject: "New Invoice is Ready to View"
Attachment: "12072020_805817_8926573.xlsm"

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: 11

OLE dump

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

Section ID	Section size	Section name
A1	548 bytes	PROJECT
A2	86 bytes	PROJECTwm
A3	3177 bytes	VBA/Module1
A4	1487 bytes	VBA/Sheet1
A5	999 bytes	VBA/ThisWorkbook
A6	3565 bytes	VBA/_VBA_PROJECT
A7	2053 bytes	VBA/__SRP_0
A8	183 bytes	VBA/__SRP_1
A9	355 bytes	VBA/__SRP_2
A10	398 bytes	VBA/__SRP_3
A11	820 bytes	VBA/dir
B1	112 bytes	CompObj
B2	46 bytes	f
B3	0 bytes	o

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	ListX_sheet1_Layout	Runs when the file is opened and ActiveX objects trigger events
Suspicious	Run	May run an executable file or a system command
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)
Suspicious	XLM macrosheet	XLM macrosheet found. It could contain malicious code

Intelligence

File Origin

# of uploads :

210

# of downloads :

210

Origin country :

n/a

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

6646356942028800.zip

Verdict:

Malicious activity

Analysis date:

2020-12-09 13:22:00 UTC

Tags:

loader

Link:

https://app.any.run/tasks/e900a0e9-317e-41e8-9a68-1740ef20b6a4

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

Sanesecurity.Badmacro.Xls.split1.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

DNS request

Creating a file in the %temp% directory

Creating a process with a hidden window

Sending a custom TCP request

Sending a custom TCP request by exploiting the app vulnerability

Launching a process by exploiting the app vulnerability

Result

Verdict:

Malicious

File Type:

OOXML Excel File with Excel4Macro

Link:

https://app.docguard.net/f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d/results/dashboard

Document image

Image:

Download PNG

Result

Verdict:

UNKNOWN

Result

Threat name:

Hidden Macro 4.0 Dridex

Detection:

malicious

Classification:

bank.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/557070

Signature

Detected Dridex e-Banking trojan

Document contains an embedded VBA macro which may execute processes

Document exploit detected (creates forbidden files)

Document exploit detected (drops PE files)

Document exploit detected (process start blacklist hit)

Document exploit detected (UrlDownloadToFile)

Found Excel 4.0 Macro with suspicious formulas

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Office process drops PE file

Sigma detected: BlueMashroom DLL Load

Sigma detected: Microsoft Office Product Spawning Windows Shell

Sigma detected: Regsvr32 Anomaly

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

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/f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d/

Threat name:

Script-Macro.Infostealer.Dridex

Status:

Malicious

First seen:

2020-12-07 16:00:06 UTC

File Type:

Document

Extracted files:

AV detection:

19 of 29 (65.52%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=6tavwhxoa3kf7jqrlxop5msl3lhvivydklqmw4j6drmjkce5vyoq._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/201207-hfm385e2we/

Behaviour

Enumerates system info in registry

Modifies Internet Explorer settings

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Process spawned suspicious child process

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Eldorado

Score:

0.90

Link:

https://yomi.yoroi.company/submissions/f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d

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_Dridex_xlsm_20200528_2 Create hunting rule
Author:	abuse.ch

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:	Microsoft_XLSX_with_Macrosheet Create hunting rule

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:	win_dridex_loader_v2 Create hunting rule
Author:	Johannes Bader @viql
Description:	detects some Dridex loaders

File information

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

Malspam

Dridex

xlsm f4c15b1eee06d45fa6115ddcfeb24bdacf54570352e0cb713e1c5895089dae1d

(this sample)

Delivery method

Distributed via e-mail attachment

Dropping

Dridex

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