MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37. 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: 21

Intelligence 12 IOCs YARA 11 File information Comments

SHA256 hash:	a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37
SHA3-384 hash:	a445ba56a6cc31da5703353266a27e0f1650f6c7c0727b204a0da54cd393533fa689b0544b675fb4b7af72117d737204
SHA1 hash:	af5b24062ff7d53cda41cb3a6d22fde57cffb467
MD5 hash:	d99020c900069e737b3f4ab8c6947375
humanhash:	colorado-robert-saturn-happy
File name:	Transmittion swift.docm
Download:	download sample
File size:	16'767 bytes
First seen:	2024-03-30 07:23:29 UTC
Last seen:	2024-03-31 19:38:09 UTC
File type:	docm
MIME type:	application/vnd.openxmlformats-officedocument.wordprocessingml.document
ssdeep	192:/imtcdEeDeJ88AQYbIFYpWHIA+ugOAo//dhhCHrPJf7hOSZLB/oZcLaBXDc6:/imtc69C8AQmuoAB0M/cLFhFZ2ZFc6
TLSH	T1CF729EBDE6047876D0E5C83E61084AE0F81C26096715687DAF0C939CC7862DB9B57EE9
TrID	53.0% (.DOCM) Word Microsoft Office Open XML Format document (with Macro) (52000/1/9) 23.9% (.DOCX) Word Microsoft Office Open XML Format document (23500/1/4) 17.8% (.ZIP) Open Packaging Conventions container (17500/1/4) 4.0% (.ZIP) ZIP compressed archive (4000/1) 1.0% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter	abuse_ch
Tags:	docm

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: 21

OLE dump

MalwareBazaar was able to identify 6 sections in this file using oledump:

Section ID	Section size	Section name
A1	374 bytes	PROJECT
A2	41 bytes	PROJECTwm
A3	3226 bytes	VBA/ThisDocument
A4	2509 bytes	VBA/_VBA_PROJECT
A5	513 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	AutoOpen	Runs when the Word document is opened
IOC	signed_2024032901175	Executable file name
Suspicious	Open	May open a file
Suspicious	write	May write to a file (if combined with Open)
Suspicious	binary	May read or write a binary file (if combined with Open)
Suspicious	ADODB.Stream	May create a text file
Suspicious	SaveToFile	May create a text file
Suspicious	Shell	May run an executable file or a system command
Suspicious	vbNormalFocus	May run an executable file or a system command
Suspicious	Create	May execute file or a system command through WMI
Suspicious	CreateObject	May create an OLE object
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 :

2'457

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37.docm

Verdict:

Malicious activity

Analysis date:

2024-03-30 07:24:33 UTC

Tags:

generated-doc macros macros-on-open

Link:

https://app.any.run/tasks/ccfe6bbc-f8e0-4d84-bdc7-5322273f0d46

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Using the Windows Management Instrumentation requests

DNS request

Creating a file

Connection attempt

Sending a custom TCP request

Connection attempt by exploiting the app vulnerability

Sending a custom TCP request by exploiting the app vulnerability

Creating a process from a recently created file

Result

Verdict:

Malicious

File Type:

Word File with Macro

Link:

https://app.docguard.net/a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37/results/dashboard

Behaviour

BlacklistAPI detected

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug dropper macros macros-on-open redcap

Link:

https://www.filescan.io/uploads/6607be129faf4f34a742198a/reports/d075332a-f62c-4b9e-9f87-382105cb1957/overview

Verdict:

Malicious

Labled as:

Valyria

Link:

https://www.hybrid-analysis.com/sample/a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37

Gathering data

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37

Details

Macro with Startup Hook

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

Macro with File System Write

Detected macro logic that can write data to the file system.

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

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1417742

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Antivirus detection for URL or domain

Document contains an embedded VBA macro which may execute processes

Document contains an embedded VBA macro with suspicious strings

Document contains an embedded VBA with functions possibly related to ADO stream file operations

Document contains an embedded VBA with functions possibly related to HTTP operations

Document contains an embedded VBA with hexadecimal encoded strings

Document exploit detected (creates forbidden files)

Document exploit detected (drops PE files)

Document exploit detected (process start blacklist hit)

Machine Learning detection for sample

Multi AV Scanner detection for domain / URL

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: File With Uncommon Extension Created By An Office Application

Sigma detected: Suspicious Microsoft Office Child Process

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37/

Threat name:

Document-Word.Trojan.Valyria

Status:

Malicious

First seen:

2024-03-29 08:43:27 UTC

AV detection:

16 of 23 (69.57%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=uzlc3dzu2tbfvfbrh2562ejxkfho3efsgouuvejf4cdxqhdthm3q._file

Result

Malware family:

n/a

Score:

8/10

Tags:

macro

Link:

https://tria.ge/reports/240330-h8c3tsah8x/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Script User-Agent

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Office loads VBA resources, possible macro or embedded object present

Drops file in Windows directory

Executes dropped EXE

Loads dropped DLL

Downloads MZ/PE file

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/a6562d8f34d4/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/a6562d8f34d4c25a94313ebbed1137514eed90b233a94a9125e087781c733b37

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

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