Malware Analysis Report

2025-08-05 16:03

Sample ID 240606-1hykyscd2v
Target 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker
SHA256 b75d5910b1f48d41bed8a29967091c7bb97c3dfbe4d8c4e14b5a78308d53ee97
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

b75d5910b1f48d41bed8a29967091c7bb97c3dfbe4d8c4e14b5a78308d53ee97

Threat Level: Known bad

The file 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-06 21:39

Signatures

Detection of CryptoLocker Variants

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-06 21:39

Reported

2024-06-06 21:42

Platform

win10v2004-20240226-en

Max time kernel

151s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\rewok.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 --mojo-platform-channel-handle=3684 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.16.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 pki.goog udp
US 8.8.8.8:53 pki.goog udp
US 216.239.32.29:80 pki.goog tcp
US 8.8.8.8:53 234.16.217.172.in-addr.arpa udp
US 8.8.8.8:53 29.32.239.216.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 252.15.104.51.in-addr.arpa udp

Files

memory/5064-0-0x0000000000730000-0x0000000000736000-memory.dmp

memory/5064-1-0x0000000000730000-0x0000000000736000-memory.dmp

memory/5064-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 ebf17f8bfb564936eab4dc5794406f54
SHA1 c80f071c92a45004b6a0e0b7827fa0d2670d4538
SHA256 f9ab409c2f4156e7f6963bb275a92a8967791125671fb490337141ec6cceb075
SHA512 1d6345c4dcc9a0356053cc417d0b512acb11d8afa7afc8c272af0dfcaa1ca7f238c7aae5da2c580c8059692a1bb5f51eb8a0ca9470718d5626750213d97079a8

memory/3996-25-0x0000000002210000-0x0000000002216000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-06 21:39

Reported

2024-06-06 21:42

Platform

win7-20231129-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp

Files

memory/3004-0-0x0000000000780000-0x0000000000786000-memory.dmp

memory/3004-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/3004-8-0x0000000000780000-0x0000000000786000-memory.dmp

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

MD5 ebf17f8bfb564936eab4dc5794406f54
SHA1 c80f071c92a45004b6a0e0b7827fa0d2670d4538
SHA256 f9ab409c2f4156e7f6963bb275a92a8967791125671fb490337141ec6cceb075
SHA512 1d6345c4dcc9a0356053cc417d0b512acb11d8afa7afc8c272af0dfcaa1ca7f238c7aae5da2c580c8059692a1bb5f51eb8a0ca9470718d5626750213d97079a8

memory/2552-23-0x00000000003C0000-0x00000000003C6000-memory.dmp