Malware analysis 2024_Tax_Return_Extension_Filing.eml Malicious activity

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File name:	2024_Tax_Return_Extension_Filing.eml
Full analysis:	https://app.any.run/tasks/17d8ff8a-a498-47f0-a91d-0c6cda73ff89
Verdict:	Malicious activity
Analysis date:	April 29, 2025, 19:25:49
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	amazon-ses spf-fail
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

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MALICIOUS
- Email came from third-party service (Amazon SES)
  - OUTLOOK.EXE (PID: 3900)
SUSPICIOUS
No suspicious indicators.
INFO
- Email verification fail (SPF, DKIM or DMARC)
  - OUTLOOK.EXE (PID: 3900)

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

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No Malware configuration.

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TRiD

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

No data.

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All screenshots are available in the full report

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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

1132

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

3900

"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\outlookservicing.dll
c:\program files\microsoft office\root\office16\vcruntime140_1.dll

6944

"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

7496

"C:\Program Files\Microsoft Office\root\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ai.exe" "4F6940A6-F5A3-4E69-A1C5-534AC963C556" "111B0B7B-0C56-4574-830F-BA16F30B471E" "3900"

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

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Total events

9 657

Read events

9 287

Write events

321

Delete events

Modification events


(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\ClientTelemetry\Sampling
Operation:	write	Name:	6
Value: 01941A000000001000B24E9A3E06000000000000000600000000000000
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\Common\CrashPersistence\OUTLOOK\3900
Operation:	write	Name:	0
Value: 0B0E10EEE5D2BE1B88D14BB51B80CE6CA52935230046ECFDA7D5C8A7EEED016A04102400449A7D64B29D01008500A907556E6B6E6F776EC906022222CA0DC2190000C91003783634C511BC1ED2120B6F00750074006C006F006F006B002E00650078006500C51620C517808004C91808323231322D44656300
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics
Operation:	delete value	Name:	BootCommand
Value:
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics
Operation:	delete value	Name:	BootFailureCount
Value:
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession
Operation:	delete key	Name:	(default)
Value:
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession
Operation:	write	Name:	CantBootResolution
Value: BootSuccess
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession
Operation:	write	Name:	ProfileBeingOpened
Value: Outlook
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession
Operation:	write	Name:	SessionId
Value: C3D8E96E-C1AF-4750-8D52-F4E28119C131
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics\BootDiagnosticsDataPreviousSession
Operation:	write	Name:	BootDiagnosticsLogFile
Value: C:\Users\admin\AppData\Local\Temp\Outlook Logging\OUTLOOK_16_0_16026_20146-20240718T1116060318-1644.etl
(PID) Process:	(3900) OUTLOOK.EXE	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Diagnostics
Operation:	delete value	Name:	ProfileBeingOpened
Value:

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
3900	OUTLOOK.EXE	C:\Users\admin\Documents\Outlook Files\Outlook1.pst		—
		MD5:—	SHA256:—
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Office\16.0\WebServiceCache\AllUsers\officeclient.microsoft.com\CE80E83D-899D-4ED2-ACFE-7756CD664B2A		xml
		MD5:5737C5E67014B7FFBB4CB52651C7CC3F	SHA256:56874AE748C4632FD6449D4DBD5598CFE671D533F12F5115977CE527F13FB388
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\TokenBroker\Cache\56a61aeb75d8f5be186c26607f4bb213abe7c5ec.tbres		binary
		MD5:EDE4409467ED0C9D4705D9FC2593E050	SHA256:7D6FD1A01E1D463F35FEE771E6B073F617AAF784789B1E9B077FA354E9378EF4
3900	OUTLOOK.EXE	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_6372E0472AFF76BB926C97818BC773B9		binary
		MD5:FB60FF789C58BC6CDCCF1F388665810F	SHA256:D0D379988D4ED6E4ACBE57E83246B62FE36DACBF96793173F626B7E31FDFB8E4
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Roaming\Microsoft\Templates\~$rmalEmail.dotm		binary
		MD5:14776A05EB8230EF6E07F6FB3A52F02E	SHA256:ED79F60333D65D851A823D6E3D70B5F84BBDF668883C8FC7FB53701DDE4D84F5
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Office\16.0\AddInClassifierCache\OfficeSharedEntities.bin		text
		MD5:CC90D669144261B198DEAD45AA266572	SHA256:89C701EEFF939A44F28921FD85365ECD87041935DCD0FE0BAF04957DA12C9899
3900	OUTLOOK.EXE	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_6372E0472AFF76BB926C97818BC773B9		binary
		MD5:EBD2B152730CD58562631FAD1F22C98A	SHA256:DD3D67B6BBA78F384FD92C559446D18390F1601901B17A1CE54EFA71BC905AEE
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\TokenBroker\Cache\089d66ba04a8cec4bdc5267f42f39cf84278bb67.tbres		binary
		MD5:1255DEC5EB1BCC28B0E6980D46962A52	SHA256:8A2F0F403F30F943DECD26971857D6E7DD5F2F3E6335D5EFBC0086F0DF8016DD
3900	OUTLOOK.EXE	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04		binary
		MD5:5EB5DEF34748487EED3D8E6DCA5EB602	SHA256:C0812947766BE364B42982863484259B68AA17B56977410060B47F501AB118FE
3900	OUTLOOK.EXE	C:\Users\admin\AppData\Local\Microsoft\Outlook\RoamCache\Stream_TableViewPreviewPrefs_2_13E3917F991B844B8A2EC41F4C75C986.dat		xml
		MD5:0E092DB99AEE99FDFF9B5B222C732CFD	SHA256:D1614AD99ADED9F6F5C1BE7FE7FFA5124BD04A526580DA3818EA8A954E852AA6

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

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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	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
3900	OUTLOOK.EXE	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEA77flR%2B3w%2FxBpruV2lte6A%3D	unknown	—	—	whitelisted
3900	OUTLOOK.EXE	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEApDqVCbATUviZV57HIIulA%3D	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
7880	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
7880	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

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

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
4	System	192.168.100.255:138	—	—	—	whitelisted
2104	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6700	RUXIMICS.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5496	MoUsoCoreWorker.exe	23.48.23.143:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
5496	MoUsoCoreWorker.exe	23.35.229.160:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
2112	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3216	svchost.exe	172.211.123.248:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
3900	OUTLOOK.EXE	52.109.89.18:443	officeclient.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
3900	OUTLOOK.EXE	52.123.129.14:443	ecs.office.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	51.104.136.2 20.73.194.208	whitelisted
google.com	142.250.185.110	whitelisted
crl.microsoft.com	23.48.23.143 23.48.23.147 23.48.23.156 23.48.23.166	whitelisted
www.microsoft.com	23.35.229.160 2.23.246.101	whitelisted
client.wns.windows.com	172.211.123.248	whitelisted
officeclient.microsoft.com	52.109.89.18	whitelisted
ecs.office.com	52.123.129.14 52.123.128.14	whitelisted
roaming.officeapps.live.com	52.109.28.47	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
omex.cdn.office.net	2.19.126.160 2.19.126.151	whitelisted

Threats

No threats detected

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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