Malware Analysis Report

2025-01-17 23:21

Sample ID 240603-qpb1esfh5v
Target 2024-06-03_4a22e3436a83edb44161b061099d5efd_cryptolocker
SHA256 b670f3235cf86ae0c4152912defb75afdab50ce5c6434f5851344e340e379032
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

b670f3235cf86ae0c4152912defb75afdab50ce5c6434f5851344e340e379032

Threat Level: Known bad

The file 2024-06-03_4a22e3436a83edb44161b061099d5efd_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 13:25

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 13:25

Reported

2024-06-03 13:28

Platform

win7-20240215-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a22e3436a83edb44161b061099d5efd_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_4a22e3436a83edb44161b061099d5efd_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a22e3436a83edb44161b061099d5efd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a22e3436a83edb44161b061099d5efd_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/2748-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2748-8-0x0000000000310000-0x0000000000316000-memory.dmp

memory/2748-0-0x0000000000310000-0x0000000000316000-memory.dmp

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

MD5 0c80f5517967a00f03da2544758fe3f2
SHA1 472ce5aa3ae73648bb08b08b175cfa66a5d42474
SHA256 6fa08f7228cf793ba8b1eafcccd965db60df9c7d6d358b16b1bdd7e4bc79ea6f
SHA512 a8592ccdbc15fe94c2338c3b254cc22775e31bb82865f741a3c1b167394c29a1bcca01a5e1f4b10ff1a4db7fc6e8f82ad871d9fe9990cfb7b38bc0050aa00313

memory/2752-23-0x00000000003F0000-0x00000000003F6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 13:25

Reported

2024-06-03 13:28

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a22e3436a83edb44161b061099d5efd_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\2024-06-03_4a22e3436a83edb44161b061099d5efd_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_4a22e3436a83edb44161b061099d5efd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_4a22e3436a83edb44161b061099d5efd_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 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 17.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.155:443 www.bing.com tcp
US 8.8.8.8:53 155.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 31.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 152.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.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/4228-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/4228-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/4228-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

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

MD5 0c80f5517967a00f03da2544758fe3f2
SHA1 472ce5aa3ae73648bb08b08b175cfa66a5d42474
SHA256 6fa08f7228cf793ba8b1eafcccd965db60df9c7d6d358b16b1bdd7e4bc79ea6f
SHA512 a8592ccdbc15fe94c2338c3b254cc22775e31bb82865f741a3c1b167394c29a1bcca01a5e1f4b10ff1a4db7fc6e8f82ad871d9fe9990cfb7b38bc0050aa00313

memory/2584-25-0x0000000002250000-0x0000000002256000-memory.dmp