Malware Analysis Report

2024-10-23 21:10

Sample ID 240125-wae2eschaq
Target 2024-01-25_13f5afe8395e6a1d9607764e2aa45107_cryptolocker
SHA256 b0accfba01bbda2dc9133a92709520cf6c010c1f85a31acf7a51d335a3ec9873
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

b0accfba01bbda2dc9133a92709520cf6c010c1f85a31acf7a51d335a3ec9873

Threat Level: Known bad

The file 2024-01-25_13f5afe8395e6a1d9607764e2aa45107_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

Loads dropped DLL

Executes dropped EXE

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 17:42

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 17:42

Reported

2024-01-25 17:45

Platform

win7-20231129-en

Max time kernel

3s

Max time network

81s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_13f5afe8395e6a1d9607764e2aa45107_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_13f5afe8395e6a1d9607764e2aa45107_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_13f5afe8395e6a1d9607764e2aa45107_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_13f5afe8395e6a1d9607764e2aa45107_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 storage-cabinets.info udp
US 8.8.8.8:53 storage-cabinets.info udp

Files

memory/2912-0-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

memory/2912-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/2912-8-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

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

MD5 e2a6507dc2ae3c83360b95bc0ea88c29
SHA1 b96a2574b05f746fdb566c7cd6d850c034fbfcd5
SHA256 177081cbca00cb7fdd3930807904de20df79f92b8adbacf44c215fa8ed89632c
SHA512 b1c1483465ee60ca0dd84312becc606aa8119065e3cf0d100930f7f612c7d53a221233d1b4a4f7c011abf671aa0d68248a50eabca9a9367156c4f6ef037bc6b8

memory/2020-18-0x0000000000280000-0x0000000000286000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 17:42

Reported

2024-01-25 17:45

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_13f5afe8395e6a1d9607764e2aa45107_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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-01-25_13f5afe8395e6a1d9607764e2aa45107_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_13f5afe8395e6a1d9607764e2aa45107_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-01-25_13f5afe8395e6a1d9607764e2aa45107_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 173.178.17.96.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 storage-cabinets.info udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.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 31.243.111.52.in-addr.arpa 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 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 88.16.208.104.in-addr.arpa udp
US 8.8.8.8:53 storage-cabinets.info udp
US 8.8.8.8:53 udp

Files

memory/2956-0-0x00000000007C0000-0x00000000007C6000-memory.dmp

memory/2956-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

memory/2956-2-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 e2a6507dc2ae3c83360b95bc0ea88c29
SHA1 b96a2574b05f746fdb566c7cd6d850c034fbfcd5
SHA256 177081cbca00cb7fdd3930807904de20df79f92b8adbacf44c215fa8ed89632c
SHA512 b1c1483465ee60ca0dd84312becc606aa8119065e3cf0d100930f7f612c7d53a221233d1b4a4f7c011abf671aa0d68248a50eabca9a9367156c4f6ef037bc6b8

memory/2172-21-0x00000000005C0000-0x00000000005C6000-memory.dmp