Malware Analysis Report

2025-01-18 00:02

Sample ID 240603-stdqxsag3w
Target 2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker
SHA256 7e5382985026cae1f1810069f1e0788b4e4901b9c634e356e3fdd3e5c028694b
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

7e5382985026cae1f1810069f1e0788b4e4901b9c634e356e3fdd3e5c028694b

Threat Level: Known bad

The file 2024-06-03_1562376d05e383df02e229f9e6a4611b_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

Unsigned PE

Enumerates physical storage devices

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 15:24

Signatures

Detection of CryptoLocker Variants

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: behavioral1

Detonation Overview

Submitted

2024-06-03 15:24

Reported

2024-06-03 15:27

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

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\rewok.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_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/1988-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1988-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1988-1-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 ffcac37b0a98e1a14070afa8039b5e01
SHA1 c4a6271762fdc056720838e555ec61f8548aecfb
SHA256 04de66524ea258d3a52f986e14df0a55c6c7e16295963f22cde3b9804c23bbcd
SHA512 e2b002708e2e5596cdee06ff36458ca0a511ae9ca3bb674d82cad099063a131f31dac75c21ac8768df928d28ff0db64563de17bb5fcaa9380de5eb9e2509bb7a

memory/2620-23-0x00000000003E0000-0x00000000003E6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 15:24

Reported

2024-06-03 15:27

Platform

win10v2004-20240226-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_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\2024-06-03_1562376d05e383df02e229f9e6a4611b_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\2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_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=3944 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 152.107.17.2.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 74.32.126.40.in-addr.arpa udp
GB 23.44.234.16:80 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
NL 52.142.223.178:80 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 8.8.8.8:53 85.65.42.20.in-addr.arpa udp

Files

memory/824-0-0x0000000002350000-0x0000000002356000-memory.dmp

memory/824-1-0x0000000002350000-0x0000000002356000-memory.dmp

memory/824-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 ffcac37b0a98e1a14070afa8039b5e01
SHA1 c4a6271762fdc056720838e555ec61f8548aecfb
SHA256 04de66524ea258d3a52f986e14df0a55c6c7e16295963f22cde3b9804c23bbcd
SHA512 e2b002708e2e5596cdee06ff36458ca0a511ae9ca3bb674d82cad099063a131f31dac75c21ac8768df928d28ff0db64563de17bb5fcaa9380de5eb9e2509bb7a

memory/3264-19-0x0000000002210000-0x0000000002216000-memory.dmp