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Windows Analysis Report oBfsC4t10n2.xls

Overview

General Information

Sample Name:	oBfsC4t10n2.xls
Analysis ID:	461925
MD5:	0c09fbdf98f0a6144a42fde00fe21504
SHA1:	bb4a594ecf90ed6b9e408c404b08620500fb4c02
SHA256:	1f156f86d45e28dac74015051546305497adb86b4e46bb7d9a84ccf5e25a12f4
Infos:
Most interesting Screenshot:

Detection

Hidden Macro 4.0

Score:	60
Range:	0 - 100
Whitelisted:	false
Confidence:	100%

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected hidden Macro 4.0 in Excel

Document contains embedded VBA macros

Yara signature match

Classification

Process Tree

System is w7x64

EXCEL.EXE (PID: 2700 cmdline: 'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding MD5: 5FB0A0F93382ECD19F5F499A5CAA59F0)

cleanup

Malware Configuration

No configs have been found

Yara Overview

Initial Sample

Source	Rule	Description	Author	Strings
oBfsC4t10n2.xls	SUSP_Excel4Macro_AutoOpen	Detects Excel4 macro use with auto open / close	John Lambert @JohnLaTwC	0x0:$header_docf: D0 CF 11 E0 0xcbcaa:$s1: Excel 0xccd0a:$s1: Excel 0x321f:$Auto_Open: 18 00 17 00 20 00 00 01 07 00 00 00 00 00 00 00 00 00 00 01 3A
oBfsC4t10n2.xls	JoeSecurity_HiddenMacro	Yara detected hidden Macro 4.0 in Excel	Joe Security

Sigma Overview

No Sigma rule has matched

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Antivirus / Scanner detection for submitted sample

Show sources

Source: oBfsC4t10n2.xls

Avira: detected

Multi AV Scanner detection for submitted file

Show sources

Source: oBfsC4t10n2.xls	Virustotal: Detection: 63%	Perma Link
Source: oBfsC4t10n2.xls	Metadefender: Detection: 44%	Perma Link
Source: oBfsC4t10n2.xls	ReversingLabs: Detection: 68%

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

File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll

Source: oBfsC4t10n2.xls

String found in binary or memory: http://0b.htb/s.dll

Source: oBfsC4t10n2.xls

OLE indicator, VBA macros: true

Source: oBfsC4t10n2.xls, type: SAMPLE

Matched rule: SUSP_Excel4Macro_AutoOpen date = 2020-03-26, author = John Lambert @JohnLaTwC, description = Detects Excel4 macro use with auto open / close, score = 2fb198f6ad33d0f26fb94a1aa159fef7296e0421da68887b8f2548bbd227e58f

Source: classification engine

Classification label: mal60.expl.winXLS@1/0@0/0

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

File created: C:\Users\user\AppData\Local\Temp\CVRC254.tmp

Jump to behavior

Source: oBfsC4t10n2.xls

OLE indicator, Workbook stream: true

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

File read: C:\Users\desktop.ini

Jump to behavior

Source: oBfsC4t10n2.xls	Virustotal: Detection: 63%
Source: oBfsC4t10n2.xls	Metadefender: Detection: 44%
Source: oBfsC4t10n2.xls	ReversingLabs: Detection: 68%

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Automated click: OK
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Automated click: OK
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Automated click: OK

Source: Window Recorder

Window detected: More than 3 window changes detected

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

Key opened: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems

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

File opened: C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll

Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX
Source: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE	Process information set: NOOPENFILEERRORBOX

HIPS / PFW / Operating System Protection Evasion:

Yara detected hidden Macro 4.0 in Excel

Show sources

Source: Yara match

File source: oBfsC4t10n2.xls, type: SAMPLE

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Scripting1	Path Interception	Path Interception	Scripting1	OS Credential Dumping	File and Directory Discovery1	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	Data Obfuscation	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	System Information Discovery1	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Junk Data	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Is Windows Process
Number of created Registry Values
Number of created Files
Visual Basic
Delphi
Java
.Net C# or VB.NET
C, C++ or other language
Is malicious
Internet

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
oBfsC4t10n2.xls	63%	Virustotal		Browse
oBfsC4t10n2.xls	47%	Metadefender		Browse
oBfsC4t10n2.xls	69%	ReversingLabs	Document-Excel.Downloader.EncDoc
oBfsC4t10n2.xls	100%	Avira	XF/Agent.B

Dropped Files

No Antivirus matches

Unpacked PE Files

No Antivirus matches

Domains

No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://0b.htb/s.dll	0%	Avira URL Cloud	safe

Domains and IPs

Contacted Domains

No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://0b.htb/s.dll	oBfsC4t10n2.xls	false	Avira URL Cloud: safe	unknown

Contacted IPs

No contacted IP infos

General Information

Joe Sandbox Version:	33.0.0 White Diamond
Analysis ID:	461925
Start date:	09.08.2021
Start time:	18:46:25
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 3m 51s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	oBfsC4t10n2.xls
Cookbook file name:	defaultwindowsofficecookbook.jbs
Analysis system description:	Windows 7 x64 SP1 with Office 2010 SP2 (IE 11, FF52, Chrome 57, Adobe Reader DC 15, Flash 25.0.0.127, Java 8 Update 121, .NET 4.6.2)
Number of analysed new started processes analysed:	2
Number of new started drivers analysed:	0
Number of existing processes analysed:	0
Number of existing drivers analysed:	0
Number of injected processes analysed:	0
Technologies:	EGA enabled HDC enabled AMSI enabled
Analysis Mode:	default
Analysis stop reason:	Timeout
Detection:	MAL
Classification:	mal60.expl.winXLS@1/0@0/0
Cookbook Comments:	Adjust boot time Enable AMSI Found application associated with file extension: .xls Found Word or Excel or PowerPoint or XPS Viewer Found warning dialog Click Ok Attach to Office via COM Scroll down Close Viewer
Warnings:	Show All Exclude process from analysis (whitelisted): dllhost.exe

Simulations

Behavior and APIs

No simulations

Joe Sandbox View / Context

IPs

No context

Domains

No context

ASN

No context

JA3 Fingerprints

No context

Dropped Files

No context

Created / dropped Files

No created / dropped files found

Static File Info

General
File type:	Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: 0xdf, Last Saved By: 0xdf, Name of Creating Application: Microsoft Excel, Create Time/Date: Mon Mar 23 14:19:10 2020, Last Saved Time/Date: Sat Apr 25 19:43:56 2020, Security: 0
Entropy (8bit):	5.658051669585681
TrID:	Microsoft Excel sheet (30009/1) 47.99% Microsoft Excel sheet (alternate) (24509/1) 39.20% Generic OLE2 / Multistream Compound File (8008/1) 12.81%
File name:	oBfsC4t10n2.xls
File size:	849920
MD5:	0c09fbdf98f0a6144a42fde00fe21504
SHA1:	bb4a594ecf90ed6b9e408c404b08620500fb4c02
SHA256:	1f156f86d45e28dac74015051546305497adb86b4e46bb7d9a84ccf5e25a12f4
SHA512:	e07776cc23b1a9629e760173e7cbf47bfc56f87c1f74f51ad59299dad3e01387ed355bed4cdcfcc269cb55ad7357896b3e1d57a7cdea0c6d84ecec09ca79e8d4
SSDEEP:	12288:53wXyuDwsryfLlYUFZWyehWg6rj4P8pJNjavyP:5Axr2YUWyXvzD
File Content Preview:	........................>.......................z...........................m...n...o...p...q...r...s...t...u...v...w...x...y..................................................................................................................................

File Icon


Icon Hash:	e4eea286a4b4bcb4

Static OLE Info

General
Document Type:	OLE
Number of OLE Files:	1

OLE File "oBfsC4t10n2.xls"

Indicators
Has Summary Info:	True
Application Name:	Microsoft Excel
Encrypted Document:	False
Contains Word Document Stream:	False
Contains Workbook/Book Stream:	True
Contains PowerPoint Document Stream:	False
Contains Visio Document Stream:	False
Contains ObjectPool Stream:
Flash Objects Count:
Contains VBA Macros:	True

Summary
Code Page:	1252
Author:	0xdf
Last Saved By:	0xdf
Create Time:	2020-03-23 14:19:10
Last Saved Time:	2020-04-25 18:43:56
Creating Application:	Microsoft Excel
Security:	0

Document Summary
Document Code Page:	1252
Thumbnail Scaling Desired:	False
Company:
Contains Dirty Links:	False
Shared Document:	False
Changed Hyperlinks:	False
Application Version:	1048576

Streams

Stream Path: \x5DocumentSummaryInformation, File Type: data, Stream Size: 4096

General
Stream Path:	\x5DocumentSummaryInformation
File Type:	data
Stream Size:	4096
Entropy:	0.333599520797
Base64 Encoded:	False
Data ASCII:	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . + , . . 0 . . . . . . . . . . . . . . . P . . . . . . . X . . . . . . . d . . . . . . . l . . . . . . . t . . . . . . . \| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i n v o i c e . . . . . c 1 z B 0 v a s N o . . . . . . . . . . . . . . . . . W o r k s h e e t s . . . . . . .
Data Raw:	fe ff 00 00 0a 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 02 d5 cd d5 9c 2e 1b 10 93 97 08 00 2b 2c f9 ae 30 00 00 00 f4 00 00 00 09 00 00 00 01 00 00 00 50 00 00 00 0f 00 00 00 58 00 00 00 17 00 00 00 64 00 00 00 0b 00 00 00 6c 00 00 00 10 00 00 00 74 00 00 00 13 00 00 00 7c 00 00 00 16 00 00 00 84 00 00 00 0d 00 00 00 8c 00 00 00 0c 00 00 00 af 00 00 00

Stream Path: \x5SummaryInformation, File Type: data, Stream Size: 4096

General
Stream Path:	\x5SummaryInformation
File Type:	data
Stream Size:	4096
Entropy:	0.266633510482
Base64 Encoded:	False
Data ASCII:	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O h . . . . . + ' . . 0 . . . . . . . . . . . . . . . @ . . . . . . . H . . . . . . . X . . . . . . . h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 x d f . . . . . . . . . . . . 0 x d f . . . . . . . . . . . . M i c r o s o f t E x c e l . @ . . . . C . . . . . . @ . . . . > . y 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Raw:	fe ff 00 00 0a 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 e0 85 9f f2 f9 4f 68 10 ab 91 08 00 2b 27 b3 d9 30 00 00 00 a0 00 00 00 07 00 00 00 01 00 00 00 40 00 00 00 04 00 00 00 48 00 00 00 08 00 00 00 58 00 00 00 12 00 00 00 68 00 00 00 0c 00 00 00 80 00 00 00 0d 00 00 00 8c 00 00 00 13 00 00 00 98 00 00 00 02 00 00 00 e4 04 00 00 1e 00 00 00 08 00 00 00

Stream Path: Workbook, File Type: Applesoft BASIC program data, first line number 16, Stream Size: 833805

General
Stream Path:	Workbook
File Type:	Applesoft BASIC program data, first line number 16
Stream Size:	833805
Entropy:	5.70721264282
Base64 Encoded:	True
Data ASCII:	. . . . . . . . Z O . . . . . . . . . . . . . . . . . . . . . . . . . . \\ . p . . . . 0 x d f B . . . . . a . . . . . . . . . = . . . . . . . . . . . . . . T h i s W o r k b o o k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = . . . . . . . . E . . 8 . . . . . . . X . @ . .
Data Raw:	09 08 10 00 00 06 05 00 5a 4f cd 07 c9 00 02 00 06 08 00 00 e1 00 02 00 b0 04 c1 00 02 00 00 00 e2 00 00 00 5c 00 70 00 04 00 00 30 78 64 66 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20

Network Behavior

No network behavior found

Code Manipulations

Statistics

System Behavior

Analysis Process: EXCEL.EXE PID: 2700 Parent PID: 584

General

Start time:	18:46:34
Start date:	09/08/2021
Path:	C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
Wow64 process (32bit):	false
Commandline:	'C:\Program Files\Microsoft Office\Office14\EXCEL.EXE' /automation -Embedding
Imagebase:	0x13f810000
File size:	27641504 bytes
MD5 hash:	5FB0A0F93382ECD19F5F499A5CAA59F0
Has elevated privileges:	true
Has administrator privileges:	true
Programmed in:	C, C++ or other language
Reputation:	high

Disassembly

Reset < >

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	File monitoring, Process command-line parameters, Process monitoring
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Windows Analysis Report oBfsC4t10n2.xls

Overview

General Information

Detection

Signatures

Classification

Process Tree

Malware Configuration

Yara Overview

Initial Sample

Sigma Overview

Jbx Signature Overview

AV Detection:

Compliance:

Networking:

System Summary:

Hooking and other Techniques for Hiding and Protection:

HIPS / PFW / Operating System Protection Evasion:

Mitre Att&ck Matrix

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Unpacked PE Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

Contacted IPs

General Information

Simulations

Behavior and APIs

Joe Sandbox View / Context

IPs

Domains

ASN

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

File Icon

Static OLE Info

General

OLE File "oBfsC4t10n2.xls"

Indicators

Summary

Document Summary

Streams

Stream Path: \x5DocumentSummaryInformation, File Type: data, Stream Size: 4096

General

Stream Path: \x5SummaryInformation, File Type: data, Stream Size: 4096

General

Stream Path: Workbook, File Type: Applesoft BASIC program data, first line number 16, Stream Size: 833805

General

Network Behavior

Code Manipulations

Statistics

System Behavior

Analysis Process: EXCEL.EXE PID: 2700 Parent PID: 584

General

Disassembly