Malware Analysis Report

2024-10-19 12:59

Sample ID 240827-wxnbbathme
Target dump.dex
SHA256 0dc1451e270547123ac13878079c693adb06589fb606240c03611ade225c4295
Tags
octo discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0dc1451e270547123ac13878079c693adb06589fb606240c03611ade225c4295

Threat Level: Known bad

The file dump.dex was found to be: Known bad.

Malicious Activity Summary

octo discovery

Octo family

Octo payload

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Modifies registry class

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-27 18:18

Signatures

Octo family

octo

Octo payload

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-27 18:18

Reported

2024-08-27 18:19

Platform

win7-20240704-en

Max time kernel

53s

Max time network

19s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\dump.dex

Signatures

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.dex C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file\shell\Read\command C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file\shell\Read C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file\shell C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\dex_auto_file\ C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000_CLASSES\.dex\ = "dex_auto_file" C:\Windows\system32\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A
N/A N/A C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\dump.dex

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\dump.dex

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe

"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\dump.dex"

Network

N/A

Files

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

MD5 6fea1635cd0be70c0ecc5642693ac239
SHA1 07af5ad7b044ee70c4da7ba78bf1311698ac2d12
SHA256 dc6617a89fb0785b950b01d222f47fdf5a451c1fa8ef599f99448352d77a502c
SHA512 a07baeea31630cb21a86cda59ff348c4d87ea65f6b95f3409615341cbef0d8a89dbf93c8e00bb6d5c627b7e55b300512d3f49143adb47c08051282d569b6c6c2

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-27 18:18

Reported

2024-08-27 18:20

Platform

win10v2004-20240802-en

Max time kernel

87s

Max time network

96s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\dump.dex

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\OpenWith.exe N/A

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\dump.dex

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp

Files

N/A