Malware Analysis Report

2025-01-23 15:26

Sample ID 240417-sbsgcsdb85
Target download.sh
SHA256 f2f9ca9ff0cb7eed58c756649005c78fe847c56c2ba415d15dd8abbd07a3e10f
Tags
score
3/10

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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
3/10

SHA256

f2f9ca9ff0cb7eed58c756649005c78fe847c56c2ba415d15dd8abbd07a3e10f

Threat Level: Likely benign

The file download.sh was found to be: Likely benign.

Malicious Activity Summary


Enumerates physical storage devices

Modifies registry class

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-17 14:57

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-17 14:57

Reported

2024-04-17 15:03

Platform

win7-20240221-en

Max time kernel

120s

Max time network

125s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\download.sh

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell\Read\command C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\ C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.sh C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.sh\ = "sh_auto_file" C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell\Read C:\Windows\system32\rundll32.exe N/A
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell C:\Windows\system32\rundll32.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\sh_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\"" C:\Windows\system32\rundll32.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

C:\Windows\system32\rundll32.exe

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

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\download.sh"

Network

N/A

Files

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

MD5 6610fc1fdba35197d1cc9a9641edc492
SHA1 5e346a6577e4f92baf518946f698b905dc668db2
SHA256 143eed93c75c85861f2b5270f6a1b231c63a178806ef467851b6a46c07ac6eb0
SHA512 c337041b0551629b1e3e54994f3eb3e973492d17a569f7fd8df0d0a09a5a0fc540f5c2f060c9c9c40bb4b531aed5b9883f82e194df370f4bb6b0e4a78117bf38

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-17 14:57

Reported

2024-04-17 15:03

Platform

win10-20240404-en

Max time kernel

187s

Max time network

298s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\download.sh

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1739856679-3467441365-73334005-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1739856679-3467441365-73334005-1000_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\download.sh

C:\Windows\system32\OpenWith.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral3

Detonation Overview

Submitted

2024-04-17 14:57

Reported

2024-04-17 15:03

Platform

win10v2004-20240226-en

Max time kernel

231s

Max time network

311s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\download.sh

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_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\download.sh

C:\Windows\system32\OpenWith.exe

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1420 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 25.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.200.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 42.200.250.142.in-addr.arpa udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-04-17 14:57

Reported

2024-04-17 15:03

Platform

win11-20240412-en

Max time kernel

220s

Max time network

280s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\download.sh

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2516240262-2296879883-3965305654-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2516240262-2296879883-3965305654-1000_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\download.sh

C:\Windows\system32\OpenWith.exe

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

Network

Files

N/A