MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d. 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

Threat unknown

Vendor detections: 12

Maldoc score: 11

Intelligence 12 IOCs YARA 11 File information Comments

SHA256 hash:	b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d
SHA3-384 hash:	55f00ab93b064ed19959d16a0269b231010499578acd3e34b96e9e5ec7b108d2d37b0554e4a41e1ed38fd235580d46d0
SHA1 hash:	3b2ed35df644d1684660543c56370dc8686e1a53
MD5 hash:	d01710a02c214a5f6e0197fd291c0b10
humanhash:	fanta-echo-seven-lion
File name:	Copy0761000025.xlsm
Download:	download sample
File size:	441'229 bytes
First seen:	2024-05-31 08:14:01 UTC
Last seen:	Never
File type:	xlsm
MIME type:	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep	12288:7fEXQu7SHOCZhSTIS2dGpeWpqivD1YxR25O8UM:7VwarmMSAGMID1R5OtM
TLSH	T16B942300C7E19F2A9C9450A7EF24CBC850B37193A09E1C492B7CBD6D20DBC6E556E9EC
TrID	42.2% (.XLAM) Excel Macro-enabled Open XML add-in (83500/1/13) 29.1% (.XLSM) Excel Microsoft Office Open XML Format document (with Macro) (57500/1/12) 17.2% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7) 8.8% (.ZIP) Open Packaging Conventions container (17500/1/4) 2.0% (.ZIP) ZIP compressed archive (4000/1)
Reporter	abuse_ch
Tags:	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 7 sections in this file using oledump:

Section ID	Section size	Section name
A1	472 bytes	PROJECT
A2	62 bytes	PROJECTwm
A3	169 bytes	VBA/Sheet1
A4	693 bytes	VBA/ThisWorkbook
A5	7 bytes	VBA/_VBA_PROJECT
A6	209 bytes	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
AutoExec	Workbook_Open	Runs when the Excel Workbook is opened
IOC	185.205.187.173	IPv4 address
IOC	Copy0761000025pdf.ex	Executable file name
Suspicious	Shell	May run an executable file or a system command
Suspicious	WScript.Shell	May run an executable file or a system command
Suspicious	CreateObject	May create an OLE object
Suspicious	Exec	May run an executable file or a system
Suspicious	Hex Strings	Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin

# of uploads :

# of downloads :

2'715

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d.xlsm

Verdict:

Suspicious activity

Analysis date:

2024-05-31 08:49:42 UTC

Tags:

macros macros-on-open

Link:

https://app.any.run/tasks/0e13ead3-2467-4bcc-8247-9c34b3aa2a9e

Note:

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

Detection(s):

Sanesecurity.Rogue.0hr.20230315-1127.DocImg.UNOFFICIAL

TwinWave.EvilDoc.GreenSlantPicturesOfU.XL.220404.UNOFFICIAL

TwinWave.EvilDoc.PublicDottedQuadDLrRunLikeHell.20210223.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.POWERSHELL.211012.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.START-PROC.211028.UNOFFICIAL

Xls.Dropper.EPPlus-9802867-2

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6659c91920ad30d287677e24win7simulatehigh_evasion

Tags:

Banker Encryption Execution Generic Network Office Stealth Dldr Dexter

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Using the Windows Management Instrumentation requests

Creating a window

Сreating synchronization primitives

Sending an HTTP GET request to an infection source

Creating a file in the %temp% directory

Creating a process from a recently created file

Creating a file in the %AppData% directory

Launching a process

Creating a process with a hidden window

Creating a file

DNS request

Connection attempt

Sending an HTTP POST request

Reading critical registry keys

Running batch commands

Connection attempt to an infection source

Unauthorized injection to a recently created process

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Stealing user critical data

Launching a process by exploiting the app vulnerability

Unauthorized injection to a system process

Result

Verdict:

Malicious

File Type:

Excel File with Macro

Link:

https://app.docguard.net/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d/results/dashboard

Payload URLs

URL

File name

185.205.187.173

ThisWorkbook

Behaviour

BlacklistAPI detected

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

75%

Tags:

macros macros-on-open powershell

Link:

https://www.filescan.io/uploads/665986d1a0ef3028c882e34a/reports/afcc900e-3c16-487a-a6bf-893d93997eb1/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d

Gathering data

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d

Details

Chunked Suspicious Strings

Detected seemingly chunked sensitive strings. High likely hood of obfuscated malintent.

Macro with Startup Hook

Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.

IPv4 Dotted Quad URL

A URL was detected referencing a direct IP address, as opposed to a domain name.

Macro Contains Suspicious String

Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...

Document With No Content

Document contains little or no semantic information.

Result

Threat name:

n/a

Detection:

malicious

Classification:

expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1515066

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

Bypasses PowerShell execution policy

Document contains an embedded VBA macro with suspicious strings

Document contains VBA stomped code (only p-code) potentially bypassing AV detection

Document exploit detected (process start blacklist hit)

Machine Learning detection for sample

Multi AV Scanner detection for domain / URL

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 queries suspicious COM object (likely to drop second stage)

Sigma detected: Suspicious Microsoft Office Child Process

Suspicious powershell command line found

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

OFFICE

Link:

https://malprob.io/report/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-05-30 10:33:26 UTC

File Type:

Document

Extracted files:

AV detection:

15 of 24 (62.50%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wgdzn7skjt4oedq2ktwdo46idfjtzmk2krijhuog4gooctx2ve6q._file

Result

Malware family:

n/a

Score:

10/10

Tags:

execution macro persistence

Link:

https://tria.ge/reports/240531-j4zxgach68/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Program crash

Suspicious use of SetThreadContext

Adds Run key to start application

Executes dropped EXE

Blocklisted process makes network request

Command and Scripting Interpreter: PowerShell

Downloads MZ/PE file

Process spawned unexpected child process

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b18796fe4a4c/report/overview.html

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/b18796fe4a4cf8e20e1a54ec3773c819533cb15a545093d1c6e19ce14efaa93d

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:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

Rule name:	Check_OutputDebugStringA_iat Create hunting rule

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	maldoc_getEIP_method_1 Create hunting rule
Author:	Didier Stevens (https://DidierStevens.com)

Rule name:	malware_shellcode_hash Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect shellcode api hash value

Rule name:	meth_get_eip Create hunting rule
Author:	Willi Ballenthin

Rule name:	office_document_vba Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	Office document with embedded VBA
Reference:	https://github.com/jipegit/

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	vbaproject_bin Create hunting rule
Author:	CD_R0M_
Description:	{76 62 61 50 72 6f 6a 65 63 74 2e 62 69 6e} is hex for vbaproject.bin. Macros are often used by threat actors. Work in progress - Ran out of time

File information

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

No further information available

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample