Malware analysis 2024_Tax_Return_Extension_Filing.eml Malicious activity

Add for printing

File name:	2024_Tax_Return_Extension_Filing.eml
Full analysis:	https://app.any.run/tasks/9667bb7d-c187-4cda-b07a-c39b74e0367c
Verdict:	Malicious activity
Analysis date:	April 29, 2025, 19:24:27
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	spf-fail amazon-ses
Indicators:
MIME:	message/rfc822
File info:	RFC 822 mail, ASCII text, with very long lines (347), with CRLF line terminators
MD5:	80A0974C832CF969B2BF5893A17E4DF0
SHA1:	5C8139AC667EB6436DB58DA7B276F8215BE79514
SHA256:	AECD0DB3892119B14F9EC6647FFDD43DF468C7F671C708EE7651D25F5671AE1A
SSDEEP:	192:yCnvB+ykYWsWBa9HPeuJC7dwbbN+0WahziRfP0iOHHeyL9Z60UWB5/CRVJkLCUbi:yYB+yPKWHPtJCO/NlJhzi+eyk05JCSO7

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 11.3636.19041.0
Adobe Acrobat (64-bit) (23.001.20093)
Adobe Flash Player 32 NPAPI (32.0.0.465)
Adobe Flash Player 32 PPAPI (32.0.0.465)
CCleaner (6.20)
FileZilla 3.65.0 (3.65.0)
Google Chrome (122.0.6261.70)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Microsoft Edge (122.0.2365.59)
Microsoft Edge Update (1.3.185.17)
Microsoft Office Professional 2019 - de-de (16.0.16026.20146)
Microsoft Office Professional 2019 - en-us (16.0.16026.20146)
Microsoft Office Professional 2019 - es-es (16.0.16026.20146)
Microsoft Office Professional 2019 - it-it (16.0.16026.20146)
Microsoft Office Professional 2019 - ja-jp (16.0.16026.20146)
Microsoft Office Professional 2019 - ko-kr (16.0.16026.20146)
Microsoft Office Professional 2019 - pt-br (16.0.16026.20146)
Microsoft Office Professional 2019 - tr-tr (16.0.16026.20146)
Microsoft Office Professionnel 2019 - fr-fr (16.0.16026.20146)
Microsoft Office профессиональный 2019 - ru-ru (16.0.16026.20146)
Microsoft OneNote - en-us (16.0.16026.20146)
Microsoft Update Health Tools (3.74.0.0)
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2022 X64 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X64 Minimum Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Minimum Runtime - 14.36.32532 (14.36.32532)
Mozilla Firefox (x64 en-US) (123.0)
Mozilla Maintenance Service (123.0)
Notepad++ (64-bit x64) (7.9.1)
Office 16 Click-to-Run Extensibility Component (16.0.15726.20202)
Office 16 Click-to-Run Licensing Component (16.0.16026.20146)
Office 16 Click-to-Run Localization Component (16.0.15726.20202)
Office 16 Click-to-Run Localization Component (16.0.15928.20198)
PowerShell 7-x64 (7.3.5.0)
Skype version 8.104 (8.104)
Update for Windows 10 for x64-based Systems (KB4023057) (2.59.0.0)
Update for Windows 10 for x64-based Systems (KB4023057) (2.63.0.0)
Update for Windows 10 for x64-based Systems (KB4480730) (2.55.0.0)
Update for Windows 10 for x64-based Systems (KB5001716) (8.93.0.0)
VLC media player (3.0.11)
WinRAR 5.91 (64-bit) (5.91.0)
Windows PC Health Check (3.6.2204.08001)

Hotfixes

Client LanguagePack Package
DotNetRollup
DotNetRollup 481
FodMetadata Package
Foundation Package
Hello Face Package
InternetExplorer Optional Package
KB5003791
KB5011048
KB5015684
KB5033052
LanguageFeatures Basic en us Package
LanguageFeatures Handwriting en us Package
LanguageFeatures OCR en us Package
LanguageFeatures Speech en us Package
LanguageFeatures TextToSpeech en us Package
MSPaint FoD Package
MediaPlayer Package
Microsoft OneCore ApplicationModel Sync Desktop FOD Package
Microsoft OneCore DirectX Database FOD Package
NetFx3 OnDemand Package
Notepad FoD Package
OpenSSH Client Package
PowerShell ISE FOD Package
Printing PMCPPC FoD Package
Printing WFS FoD Package
ProfessionalEdition
QuickAssist Package
RollupFix
ServicingStack
ServicingStack 3989
StepsRecorder Package
TabletPCMath Package
UserExperience Desktop Package
WordPad FoD Package

Add for printing

MALICIOUS
- Email came from third-party service (Amazon SES)
  - OUTLOOK.EXE (PID: 1276)
SUSPICIOUS
No suspicious indicators.
INFO
- Email verification fail (SPF, DKIM or DMARC)
  - OUTLOOK.EXE (PID: 1276)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

Add for printing

No Malware configuration.

Add for printing

TRiD

.eml	\|	E-Mail message (Var. 5) (100)

No data.

Add for printing

All screenshots are available in the full report

Add for printing

Total processes

134

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1276

"C:\Program Files\Microsoft Office\Root\Office16\OUTLOOK.EXE" /eml C:\Users\admin\AppData\Local\Temp\2024_Tax_Return_Extension_Filing.eml

C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Outlook

Version:

16.0.16026.20146

Modules

Images
c:\program files\microsoft office\root\office16\outlook.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\program files\microsoft office\root\office16\vcruntime140_1.dll
c:\program files\microsoft office\root\office16\outlookservicing.dll

7500

C:\WINDOWS\system32\SppExtComObj.exe -Embedding

C:\Windows\System32\SppExtComObj.Exe

—

svchost.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

KMS Connection Broker

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll

7532

"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent

C:\Windows\System32\slui.exe

—

SppExtComObj.Exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

Windows Activation Client

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll

7600

"C:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ai.exe" "B07B86DF-5720-4148-8263-F2A2DBDE4B93" "758A81AE-AA7D-4658-B476-3DED32DED21E" "1276"

C:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ai.exe

—

OUTLOOK.EXE

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Artificial Intelligence (AI) Host for the Microsoft® Windows® Operating System and Platform x64.

Version:

0.12.2.0

Modules

Images
c:\program files\microsoft office\root\vfs\programfilescommonx64\microsoft shared\office16\ai.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\common files\microsoft shared\clicktorun\appvisvsubsystems64.dll
c:\windows\system32\advapi32.dll
c:\program files\common files\microsoft shared\clicktorun\c2r64.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\ole32.dll
c:\windows\system32\sechost.dll

Add for printing

Total events

9 936

Read events

9 566

Write events

321

Delete events

Modification events


(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	en-US
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	de-de
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	es-es
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	fr-fr
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	it-it
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	ja-jp
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	ko-kr
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	pt-br
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	ru-ru
Value: 1
(PID) Process:	(1276) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\LanguageResources\EnabledEditingLanguages
Operation:	write	Name:	tr-tr
Value: 1

Add for printing

Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
1276	OUTLOOK.EXE	C:\Users\admin\Documents\Outlook Files\Outlook1.pst		—
		MD5:—	SHA256:—
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Office\16.0\WebServiceCache\AllUsers\officeclient.microsoft.com\2EB4F35C-9B7D-4AE7-9441-0AF217F484B6		xml
		MD5:31A3913670F821F247DA30DC7A6D6C43	SHA256:B465E75FEE9100D0E8E2600F535B3D2250260E2D316F8D5BCD15151967ABFE02
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\TokenBroker\Cache\089d66ba04a8cec4bdc5267f42f39cf84278bb67.tbres		binary
		MD5:64482DD65A31387450D53AE4ECAFC4AB	SHA256:B95271770EB8C611DED97733CC98BE163BD1F9CC157656C8E7BE47187BAD5724
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\TokenBroker\Cache\56a61aeb75d8f5be186c26607f4bb213abe7c5ec.tbres		binary
		MD5:49EDAD22EDAE7FEE70F9E69DBC0E346C	SHA256:7B6E81BC2B6507D91B73F6A09E4AC036848AF7F4B9B73E2BB60346F747E4125E
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Roaming\Microsoft\Templates\~$rmalEmail.dotm		binary
		MD5:B8857815C1452C92A17640E94A90A8EC	SHA256:56D8B91DF6BCFB49EA79B6E33EA0B2C5DD5A967A55E6D39362E219507582C926
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Office\16.0\AddInClassifierCache\OfficeSharedEntitiesUpdated.bin		text
		MD5:267F49954C5BCCEFF65CC021BF7519F7	SHA256:59CDE7D20C6E059B7B8756850EB032F0C407F8368F75E71B5C6673F29D2F7D38
1276	OUTLOOK.EXE	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_6372E0472AFF76BB926C97818BC773B9		binary
		MD5:363554A6E564BFF7494D230F1413E085	SHA256:CDB4273E8D5CCAC9F4B187D3D0FDC9102C73512485EBED70F5662B591D4425EF
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Office\16.0\AddInClassifierCache\OfficeSharedEntities.bin		text
		MD5:CC90D669144261B198DEAD45AA266572	SHA256:89C701EEFF939A44F28921FD85365ECD87041935DCD0FE0BAF04957DA12C9899
1276	OUTLOOK.EXE	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_6372E0472AFF76BB926C97818BC773B9		binary
		MD5:FB60FF789C58BC6CDCCF1F388665810F	SHA256:D0D379988D4ED6E4ACBE57E83246B62FE36DACBF96793173F626B7E31FDFB8E4
1276	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Outlook\RoamCache\Stream_TableViewPreviewPrefs_2_4A0530EBF5A19648B40F2C0CD02BD520.dat		xml
		MD5:0E092DB99AEE99FDFF9B5B222C732CFD	SHA256:D1614AD99ADED9F6F5C1BE7FE7FFA5124BD04A526580DA3818EA8A954E852AA6

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Add for printing

HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
5496	MoUsoCoreWorker.exe	GET	200	23.48.23.143:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
5496	MoUsoCoreWorker.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
1276	OUTLOOK.EXE	GET	200	23.54.109.203:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEA77flR%2B3w%2FxBpruV2lte6A%3D	unknown	—	—	whitelisted
1276	OUTLOOK.EXE	GET	200	23.54.109.203:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEApDqVCbATUviZV57HIIulA%3D	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	23.54.109.203:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
1276	OUTLOOK.EXE	GET	200	18.245.65.219:80	http://ocsp.r2m03.amazontrust.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQqHI%2BsdmapawQncL1rpCEZZ8gTSAQUVdkYX9IczAHhWLS%2Bq9lVQgHXLgICEAqwa1sTQFnohBowmsVh5pA%3D	unknown	—	—	whitelisted
1276	OUTLOOK.EXE	GET	200	18.245.38.41:80	http://ocsp.rootca1.amazontrust.com/MFQwUjBQME4wTDAJBgUrDgMCGgUABBRPWaOUU8%2B5VZ5%2Fa9jFTaU9pkK3FAQUhBjMhTTsvAyUlC4IWZzHshBOCggCEwdzEkzUBtJnwJkc3SmanzgxeYU%3D	unknown	—	—	whitelisted
8172	SIHClient.exe	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted
8172	SIHClient.exe	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
—	—	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5496	MoUsoCoreWorker.exe	23.48.23.143:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
5496	MoUsoCoreWorker.exe	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
3216	svchost.exe	172.211.123.249:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
1276	OUTLOOK.EXE	52.109.32.97:443	officeclient.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	GB	whitelisted
1276	OUTLOOK.EXE	52.123.128.14:443	ecs.office.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
1276	OUTLOOK.EXE	52.109.28.47:443	roaming.officeapps.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	GB	whitelisted
1276	OUTLOOK.EXE	23.54.109.203:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted
1276	OUTLOOK.EXE	2.16.10.172:443	omex.cdn.office.net	Akamai International B.V.	AT	whitelisted

DNS requests

Domain	IP	Reputation
google.com	142.250.186.78	whitelisted
settings-win.data.microsoft.com	20.73.194.208 51.124.78.146	whitelisted
crl.microsoft.com	23.48.23.143 23.48.23.159 23.48.23.194 23.48.23.177 23.48.23.176 23.48.23.169 23.48.23.141	whitelisted
www.microsoft.com	184.30.21.171 2.23.246.101	whitelisted
client.wns.windows.com	172.211.123.249	whitelisted
officeclient.microsoft.com	52.109.32.97	whitelisted
ecs.office.com	52.123.128.14 52.123.129.14	whitelisted
roaming.officeapps.live.com	52.109.28.47	whitelisted
ocsp.digicert.com	23.54.109.203	whitelisted
omex.cdn.office.net	2.16.10.172 2.16.10.163 2.16.10.175	whitelisted

Threats

No threats detected

Add for printing

No debug info

General Info

2024_Tax_Return_Extension_Filing.eml

80A0974C832CF969B2BF5893A17E4DF0

5C8139AC667EB6436DB58DA7B276F8215BE79514

AECD0DB3892119B14F9EC6647FFDD43DF468C7F671C708EE7651D25F5671AE1A

192:yCnvB+ykYWsWBa9HPeuJC7dwbbN+0WahziRfP0iOHHeyL9Z60UWB5/CRVJkLCUbi:yYB+yPKWHPtJCO/NlJhzi+eyk05JCSO7

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Email came from third-party service (Amazon SES)

SUSPICIOUS

INFO

Email verification fail (SPF, DKIM or DMARC)

Malware configuration

Static information

TRiD

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings