Malware Analysis Report

2025-04-14 04:16

Sample ID 240609-jdmjfsff5x
Target 2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker
SHA256 d6f201cafcccaa227dda627cc4b76354028e61c6f7c00c562bc9f898eec2eaad
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

d6f201cafcccaa227dda627cc4b76354028e61c6f7c00c562bc9f898eec2eaad

Threat Level: Known bad

The file 2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Checks computer location settings

Loads dropped DLL

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

2024-06-09 07:34

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

2024-06-09 07:33

Reported

2024-06-09 07:37

Platform

win7-20240220-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_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\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_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/2036-0-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2036-8-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2036-1-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 413cbb761e79041325ca3575c11fa46c
SHA1 f86b9fbf9811a483a6a2266cd4dec20da06af218
SHA256 a5468e3d138f51cb57cbe67782b3e26673967aa0299c48c6433da289d07bdaf3
SHA512 3ec69e3ed2b5b9cb706c61a40669c433a9cc5d104169f529aa84a01584422e9cc696b063f7c1718bfc7516b286949991cc6872aeb85c9968dc4f83f3ab6b0e49

memory/2080-23-0x0000000000380000-0x0000000000386000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 07:33

Reported

2024-06-09 07:37

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_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\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_a316b3b422b74c083ff7f511ca2780d3_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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.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 13.227.111.52.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

Files

memory/4656-0-0x0000000002350000-0x0000000002356000-memory.dmp

memory/4656-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4656-8-0x0000000002350000-0x0000000002356000-memory.dmp

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

MD5 413cbb761e79041325ca3575c11fa46c
SHA1 f86b9fbf9811a483a6a2266cd4dec20da06af218
SHA256 a5468e3d138f51cb57cbe67782b3e26673967aa0299c48c6433da289d07bdaf3
SHA512 3ec69e3ed2b5b9cb706c61a40669c433a9cc5d104169f529aa84a01584422e9cc696b063f7c1718bfc7516b286949991cc6872aeb85c9968dc4f83f3ab6b0e49

memory/4152-25-0x0000000002D60000-0x0000000002D66000-memory.dmp