Malware Analysis Report

2025-01-18 02:36

Sample ID 240125-s2d2naagen
Target 2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker
SHA256 b926658227ec1a05d3f20bee63cfa53b71238913baa5ed266a704e7f6f2826c9
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

b926658227ec1a05d3f20bee63cfa53b71238913baa5ed266a704e7f6f2826c9

Threat Level: Known bad

The file 2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker was found to be: Known bad.

Malicious Activity Summary

discovery kinsing loader

Kinsing

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

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 15:36

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 15:36

Reported

2024-01-25 15:39

Platform

win7-20231215-en

Max time kernel

15s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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_6f403dddf26e8e95554e0b18e3d6a0cc_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_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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/2204-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

memory/2204-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2204-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

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

MD5 613c73c528adbcf26ea87fbbe1a97a02
SHA1 4278e9fa93a4d5e57d09828e36397eb52d9356ad
SHA256 5297b43a515ebf2e0646903455a556a393f0758bddbfcfee75f7c989b246356e
SHA512 e72d8bc213da25400286b9c57de27bef1d555e5bcc21effe801a7fbad7273fab226935be61928a85c8008de99ffd1b72f7a99339adf4f3c7e74a728b38bfdd24

memory/2316-19-0x00000000002E0000-0x00000000002E6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 15:36

Reported

2024-01-25 15:39

Platform

win10v2004-20231215-en

Max time kernel

150s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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 8.8.8.8:53 104.219.191.52.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 16.234.44.23.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 8.8.8.8:53 194.178.17.96.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 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 187.178.17.96.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 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 8.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2328-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/2328-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/2328-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 613c73c528adbcf26ea87fbbe1a97a02
SHA1 4278e9fa93a4d5e57d09828e36397eb52d9356ad
SHA256 5297b43a515ebf2e0646903455a556a393f0758bddbfcfee75f7c989b246356e
SHA512 e72d8bc213da25400286b9c57de27bef1d555e5bcc21effe801a7fbad7273fab226935be61928a85c8008de99ffd1b72f7a99339adf4f3c7e74a728b38bfdd24

memory/1816-25-0x0000000002D60000-0x0000000002D66000-memory.dmp