Automated Malware Analysis IOC Report for

Files

File Path

Type

Category

Malicious

SecuriteInfo.com.Heur.15528.xls

Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, Code page: 1251, Name of Creating Application: Microsoft Excel, Create Time/Date: Sat Sep 16 01:00:00 2006, Last Saved Time/Date: Mon Feb 22 11:58:55 2021, Security: 0

initial sample

C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\SecuriteInfo.com.Heur.15528.xls.LNK

MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Archive, ctime=Wed Sep 30 14:03:44 2020, mtime=Tue Feb 23 02:20:28 2021, atime=Tue Feb 23 02:20:28 2021, length=93696, window=hide

dropped

C:\Users\user\AppData\Local\Microsoft\Office\16.0\WebServiceCache\AllUsers\officeclient.microsoft.com\69F6F346-5229-46C6-AF0A-021EDBBC41A1

XML 1.0 document, UTF-8 Unicode text, with very long lines, with CRLF line terminators

dropped

C:\Users\user\AppData\Local\Temp\F9810000

data

dropped

C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\Desktop.LNK

MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Read-Only, Directory, ctime=Thu Jun 27 16:19:49 2019, mtime=Tue Feb 23 02:20:28 2021, atime=Tue Feb 23 02:20:28 2021, length=8192, window=hide

dropped

C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\index.dat

ASCII text, with CRLF line terminators

dropped

C:\Users\user\Desktop\DA810000

Applesoft BASIC program data, first line number 16

dropped

C:\Users\user\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506

Microsoft Cabinet archive data, 59134 bytes, 1 file

dropped

C:\Users\user\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E0F5C59F9FA661F6F4C50B87FEF3A15A

data

dropped

C:\Users\user\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506

data

dropped

C:\Users\user\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E0F5C59F9FA661F6F4C50B87FEF3A15A

data

dropped

C:\Users\user\AppData\Local\Temp\71DE0000

data

dropped

C:\Users\user\AppData\Local\Temp\CabDCC9.tmp

Microsoft Cabinet archive data, 59134 bytes, 1 file

dropped

C:\Users\user\AppData\Local\Temp\TarDCCA.tmp

data

dropped

C:\Users\user\AppData\Roaming\Microsoft\Office\Recent\SecuriteInfo.com.Heur.15528.LNK

MS Windows shortcut, Item id list present, Points to a file or directory, Has Relative path, Archive, ctime=Tue Feb 23 02:14:27 2021, mtime=Tue Feb 23 02:14:39 2021, atime=Tue Feb 23 02:14:39 2021, length=93696, window=hide

dropped

C:\Users\user\Desktop\12DE0000

Applesoft BASIC program data, first line number 16

dropped

There are 6 hidden files, click here to show them.

Processes

Path

Cmdline

Malicious

C:\Program Files (x86)\Microsoft Office\Office16\EXCEL.EXE

'C:\Program Files (x86)\Microsoft Office\Office16\EXCEL.EXE' /automation -Embedding

Details

Is windows:	true
Is dropped:	false
PID:	2576
Target ID:	0
Parent PID:	792
Name:	EXCEL.EXE
Class:	excel
Path:	C:\Program Files (x86)\Microsoft Office\Office16\EXCEL.EXE
Commandline:	'C:\Program Files (x86)\Microsoft Office\Office16\EXCEL.EXE' /automation -Embedding
Size:	27110184
MD5:	5D6638F2C8F8571C593999C58866007E
Time:	19:20:24
Date:	22/02/2021
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0x1140000
Modulesize:	27131904
Wow64:	true

Signature Hits	Behavior Group	Mitre Attack
Sigma detected: Microsoft Office Product Spawning Windows Shell	System Summary,
Spawns processes	System Summary,	Process Injection

C:\Windows\SysWOW64\rundll32.exe

rundll32 ..\rieuro.vnt,DllRegisterServer

Details

Is windows:	true
Is dropped:	false
PID:	6196
Target ID:	2
Parent PID:	2576
Name:	rundll32.exe
Class:	system-tools
Path:	C:\Windows\SysWOW64\rundll32.exe
Commandline:	rundll32 ..\rieuro.vnt,DllRegisterServer
Size:	61952
MD5:	D7CA562B0DB4F4DD0F03A89A1FDAD63D
Time:	19:20:30
Date:	22/02/2021
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0xf10000
Modulesize:	81920
Wow64:	true

Signature Hits	Behavior Group	Mitre Attack
Document exploit detected (process start blacklist hit)	Software Vulnerabilities,	Exploitation for Client Execution
Sigma detected: Microsoft Office Product Spawning Windows Shell	System Summary,
Runs a DLL by calling functions	System Summary,	Rundll32
Spawns processes	System Summary,	Process Injection

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding

Details

Is windows:	true
Is dropped:	false
PID:	2456
Target ID:	0
Parent PID:	584
Name:	EXCEL.EXE
Class:	excel
Path:	C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
Commandline:	'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding
Size:	27641504
MD5:	5FB0A0F93382ECD19F5F499A5CAA59F0
Time:	19:14:36
Date:	22/02/2021
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0x13f190000
Modulesize:	27758592
Wow64:	false

Signature Hits	Behavior Group	Mitre Attack
Sigma detected: Microsoft Office Product Spawning Windows Shell	System Summary,
Spawns processes	System Summary,	Process Injection

C:\Windows\System32\rundll32.exe

rundll32 ..\rieuro.vnt,DllRegisterServer

Details

Is windows:	true
Is dropped:	false
PID:	2820
Target ID:	3
Parent PID:	2456
Name:	rundll32.exe
Class:	rundll32
Path:	C:\Windows\System32\rundll32.exe
Commandline:	rundll32 ..\rieuro.vnt,DllRegisterServer
Size:	45568
MD5:	DD81D91FF3B0763C392422865C9AC12E
Time:	19:14:42
Date:	22/02/2021
Reason:	newprocess
Reputation:	high
Is admin:	true
Is elevated:	true
Modulebase:	0xff950000
Modulesize:	61440
Wow64:	false

Signature Hits	Behavior Group	Mitre Attack
Document exploit detected (process start blacklist hit)	Software Vulnerabilities,	Exploitation for Client Execution
Sigma detected: Microsoft Office Product Spawning Windows Shell	System Summary,
Runs a DLL by calling functions	System Summary,	Rundll32
Spawns processes	System Summary,	Process Injection

URLs

Name

Malicious

https://api.diagnosticssdf.office.com

unknown

https://login.microsoftonline.com/

unknown

https://shell.suite.office.com:1443

unknown

https://login.windows.net/72f988bf-86f1-41af-91ab-2d7cd011db47/oauth2/authorize

unknown

https://autodiscover-s.outlook.com/

unknown

https://insertmedia.bing.office.net/images/officeonlinecontent/browse?cp=Flickr

unknown

https://cdn.entity.

unknown

https://api.addins.omex.office.net/appinfo/query

unknown

https://wus2-000.contentsync.

unknown

https://clients.config.office.net/user/v1.0/tenantassociationkey

unknown

https://dev.virtualearth.net/REST/V1/GeospatialEndpoint/

unknown

https://powerlift.acompli.net

unknown

https://rpsticket.partnerservices.getmicrosoftkey.com

unknown

https://lookup.onenote.com/lookup/geolocation/v1

unknown

https://cortana.ai

unknown

https://apc.learningtools.onenote.com/learningtoolsapi/v2.0/getfreeformspeech

unknown

https://cloudfiles.onenote.com/upload.aspx

unknown

https://syncservice.protection.outlook.com/PolicySync/PolicySync.svc/SyncFile

unknown

https://entitlement.diagnosticssdf.office.com

unknown

https://na01.oscs.protection.outlook.com/api/SafeLinksApi/GetPolicy

unknown

https://api.aadrm.com/

unknown

https://ofcrecsvcapi-int.azurewebsites.net/

unknown

https://dataservice.protection.outlook.com/PsorWebService/v1/ClientSyncFile/MipPolicies

unknown

https://api.microsoftstream.com/api/

unknown

https://insertmedia.bing.office.net/images/hosted?host=office&adlt=strict&hostType=Immersive

unknown

https://cr.office.com

unknown

https://portal.office.com/account/?ref=ClientMeControl

unknown

https://ecs.office.com/config/v2/Office

unknown

https://graph.ppe.windows.net

unknown

https://res.getmicrosoftkey.com/api/redemptionevents

unknown

https://powerlift-frontdesk.acompli.net

unknown

https://tasks.office.com

unknown

https://officeci.azurewebsites.net/api/

unknown

https://sr.outlook.office.net/ws/speech/recognize/assistant/work

unknown

https://store.office.cn/addinstemplate

unknown

https://wus2-000.pagecontentsync.

unknown

https://outlook.office.com/autosuggest/api/v1/init?cvid=

unknown

https://globaldisco.crm.dynamics.com

unknown

https://nam.learningtools.onenote.com/learningtoolsapi/v2.0/getfreeformspeech

unknown

https://store.officeppe.com/addinstemplate

unknown

https://dev0-api.acompli.net/autodetect

unknown

https://www.odwebp.svc.ms

unknown

https://api.powerbi.com/v1.0/myorg/groups

unknown

https://web.microsoftstream.com/video/

unknown

https://graph.windows.net

unknown

https://dataservice.o365filtering.com/

unknown

https://officesetup.getmicrosoftkey.com

unknown

https://analysis.windows.net/powerbi/api

unknown

https://prod-global-autodetect.acompli.net/autodetect

unknown

https://outlook.office365.com/autodiscover/autodiscover.json

unknown

https://powerpoint.uservoice.com/forums/288952-powerpoint-for-ipad-iphone-ios

unknown

https://eur.learningtools.onenote.com/learningtoolsapi/v2.0/getfreeformspeech

unknown

https://pf.directory.live.com/profile/mine/System.ShortCircuitProfile.json

unknown

https://onedrive.live.com/about/download/?windows10SyncClientInstalled=false

unknown

https://webdir.online.lync.com/autodiscover/autodiscoverservice.svc/root/

unknown

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

IOCReport

Files

Processes

URLs