Malware Analysis Report

2024-10-19 09:41

Sample ID 240613-pk8m6asfjq
Target 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker
SHA256 b90f8095274d599bdadf6875c9b6ae4a35ccd057a337cc2063ddb5e3b4697d9b
Tags
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b90f8095274d599bdadf6875c9b6ae4a35ccd057a337cc2063ddb5e3b4697d9b

Threat Level: Known bad

The file 2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 12:24

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 12:24

Reported

2024-06-13 12:26

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\misid.exe

"C:\Users\Admin\AppData\Local\Temp\misid.exe"

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 --field-trial-handle=4104,i,10373433614523925616,13586256558317053467,262144 --variations-seed-version --mojo-platform-channel-handle=3976 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp

Files

memory/4564-0-0x0000000000500000-0x000000000050E000-memory.dmp

memory/4564-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4564-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

memory/4564-9-0x00000000004F0000-0x00000000004F6000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\misid.exe

MD5 a11867f8ead957fc6b5ae1c7200fd71a
SHA1 51f1dbc231ce95be0918e5d83e606f9909544af9
SHA256 2b8a55147220731556aef51af3ee65faa77dd4b576f454cb6c398cecc9059d4e
SHA512 1dcd92472a398896338a4e9dc04383d748d46cc3df4d476c9cb9d51479949fa74bcc92475a2547a39ff6ec0f5d61336706486541f0ec0dc72ce00c874f460724

memory/1436-17-0x0000000000500000-0x000000000050E000-memory.dmp

memory/1436-26-0x0000000000840000-0x0000000000846000-memory.dmp

memory/4564-25-0x0000000000500000-0x000000000050E000-memory.dmp

memory/1436-19-0x0000000002070000-0x0000000002076000-memory.dmp

memory/1436-27-0x0000000000500000-0x000000000050E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 12:24

Reported

2024-06-13 12:26

Platform

win7-20240508-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_050e12ee74b8155ab700c46d10689830_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\misid.exe

"C:\Users\Admin\AppData\Local\Temp\misid.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp

Files

memory/1712-0-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1712-1-0x0000000000340000-0x0000000000346000-memory.dmp

memory/1712-9-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1712-8-0x0000000000500000-0x000000000050E000-memory.dmp

\Users\Admin\AppData\Local\Temp\misid.exe

MD5 a11867f8ead957fc6b5ae1c7200fd71a
SHA1 51f1dbc231ce95be0918e5d83e606f9909544af9
SHA256 2b8a55147220731556aef51af3ee65faa77dd4b576f454cb6c398cecc9059d4e
SHA512 1dcd92472a398896338a4e9dc04383d748d46cc3df4d476c9cb9d51479949fa74bcc92475a2547a39ff6ec0f5d61336706486541f0ec0dc72ce00c874f460724

memory/2588-15-0x0000000000500000-0x000000000050E000-memory.dmp

memory/2588-17-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2588-24-0x0000000000500000-0x000000000050E000-memory.dmp