Malware Analysis Report

2024-10-23 21:10

Sample ID 240125-v86rcscggk
Target 2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker
SHA256 3e6b5e3b5e794c5ed3fac5bf9fb824072730bf7e6816432132088386f186a3b3
Tags
discovery kinsing loader
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

3e6b5e3b5e794c5ed3fac5bf9fb824072730bf7e6816432132088386f186a3b3

Threat Level: Known bad

The file 2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker was found to be: Known bad.

Malicious Activity Summary

discovery kinsing loader

Kinsing

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

Creates a large amount of network flows

Enumerates physical storage devices

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-25 17:40

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

2024-01-25 17:40

Reported

2024-01-25 17:43

Platform

win7-20231215-en

Max time kernel

16s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_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\retln.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe N/A

Creates a large amount of network flows

discovery

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 storage-cabinets.info udp

Files

memory/1768-0-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1768-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/1768-8-0x0000000000410000-0x0000000000416000-memory.dmp

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

MD5 62cc778e5f787e41e077c63cf9b7d2cb
SHA1 3ed1e59f498e3044b9a56d6ae7d98156b262330a
SHA256 6131bff917f0b6b21e967a1f77cb99f4482e092d71495a57fef69a6947e95562
SHA512 4877be93aada7e78cb00043c23ebe2e065b0b312512bdfadea6ec31181186bfaac22833d6f1d7581507790b3bfeb9d44a7abfd763dee2745348b994a97e95d3a

memory/2700-20-0x0000000000310000-0x0000000000316000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 17:40

Reported

2024-01-25 17:43

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe"

Signatures

Kinsing

loader kinsing

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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp

Files

memory/2616-0-0x0000000002340000-0x0000000002346000-memory.dmp

memory/2616-1-0x0000000002340000-0x0000000002346000-memory.dmp

memory/2616-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 62cc778e5f787e41e077c63cf9b7d2cb
SHA1 3ed1e59f498e3044b9a56d6ae7d98156b262330a
SHA256 6131bff917f0b6b21e967a1f77cb99f4482e092d71495a57fef69a6947e95562
SHA512 4877be93aada7e78cb00043c23ebe2e065b0b312512bdfadea6ec31181186bfaac22833d6f1d7581507790b3bfeb9d44a7abfd763dee2745348b994a97e95d3a

memory/2760-21-0x0000000000500000-0x0000000000506000-memory.dmp