Malware Analysis Report

2025-01-18 12:51

Sample ID 240613-d3cgwswflr
Target 2024-06-13_4568ba52fc5b80a78838340ba159a9a1_cryptolocker
SHA256 4cdab9b47b6dbe7666f72b846dc067ad04e53688b9d0c144bab5d05f5cb0b5c3
Tags
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

4cdab9b47b6dbe7666f72b846dc067ad04e53688b9d0c144bab5d05f5cb0b5c3

Threat Level: Known bad

The file 2024-06-13_4568ba52fc5b80a78838340ba159a9a1_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:31

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 03:31

Reported

2024-06-13 03:34

Platform

win7-20231129-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4568ba52fc5b80a78838340ba159a9a1_cryptolocker.exe"

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

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_4568ba52fc5b80a78838340ba159a9a1_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_4568ba52fc5b80a78838340ba159a9a1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4568ba52fc5b80a78838340ba159a9a1_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
IN 103.91.187.97:443 bestccc.com tcp
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IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 bestccc.com tcp
IN 103.91.187.97:443 tcp
IN 103.91.187.97:443 tcp
IN 103.91.187.97:443 tcp

Files

memory/1276-1-0x0000000000270000-0x0000000000276000-memory.dmp

memory/1276-0-0x0000000000230000-0x0000000000236000-memory.dmp

memory/1276-8-0x0000000000230000-0x0000000000236000-memory.dmp

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

MD5 d3a87c075cb24a008aa0095906dcc306
SHA1 d3451b90efca1b2a91ac834352cd3064606f8c8e
SHA256 0cc35e17ddb65d239339961b2b5ed5ceb98875e498a15886587a2e22dfdde602
SHA512 48a18f4c8b7215c02f101bd89df529068f5f700c450e682ecfe29f6ebc111e2dc0e9d74efaa13141658c7598b785a48f0b414a9afe45288fa455bd323ab06d32

memory/3008-22-0x0000000000490000-0x0000000000496000-memory.dmp

memory/3008-15-0x00000000004D0000-0x00000000004D6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:31

Reported

2024-06-13 03:34

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4568ba52fc5b80a78838340ba159a9a1_cryptolocker.exe"

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

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_4568ba52fc5b80a78838340ba159a9a1_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_4568ba52fc5b80a78838340ba159a9a1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4568ba52fc5b80a78838340ba159a9a1_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=1304,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=4456 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa 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/3096-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/3096-2-0x0000000002080000-0x0000000002086000-memory.dmp

memory/3096-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

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

MD5 d3a87c075cb24a008aa0095906dcc306
SHA1 d3451b90efca1b2a91ac834352cd3064606f8c8e
SHA256 0cc35e17ddb65d239339961b2b5ed5ceb98875e498a15886587a2e22dfdde602
SHA512 48a18f4c8b7215c02f101bd89df529068f5f700c450e682ecfe29f6ebc111e2dc0e9d74efaa13141658c7598b785a48f0b414a9afe45288fa455bd323ab06d32

memory/4408-23-0x00000000006C0000-0x00000000006C6000-memory.dmp