Malware Analysis Report

2025-04-14 03:49

Sample ID 240612-xcw86avhqe
Target 2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker
SHA256 24cd98c92de3f71b5ed52698fa8c4c2553251e715af3667e61abc1402b57b1fc
Tags
upx
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

24cd98c92de3f71b5ed52698fa8c4c2553251e715af3667e61abc1402b57b1fc

Threat Level: Known bad

The file 2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Checks computer location settings

UPX packed file

Executes dropped EXE

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 18:43

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 18:43

Reported

2024-06-12 18:45

Platform

win7-20240221-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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\asih.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp

Files

memory/1984-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1984-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1984-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

memory/1984-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

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

MD5 bdd25fc69fafcd93344e44f49f91620b
SHA1 ae87dab63b3ef9ec0f016887d0b7a4fe22962bf7
SHA256 a01c8efd73d3d13a89d17853111869b71537befe58a00369200ee6ed3bf2dc6c
SHA512 eb5fc6318d86697011d46c351a2cd7b8466802ea6a16b981126434e6c85a44357538947025e19aa61e02a261608f169ffa044212f95630c45ce6a6e49ae85005

memory/1984-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2172-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2172-19-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2172-26-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2172-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 18:43

Reported

2024-06-12 18:45

Platform

win10v2004-20240611-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe N/A

Executes dropped EXE

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

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b831353f920ed50ba14c9dae189b8e37_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 emrlogistics.com udp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
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 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 99.58.20.217.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp

Files

memory/4476-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4476-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/4476-2-0x0000000002080000-0x0000000002086000-memory.dmp

memory/4476-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

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

MD5 bdd25fc69fafcd93344e44f49f91620b
SHA1 ae87dab63b3ef9ec0f016887d0b7a4fe22962bf7
SHA256 a01c8efd73d3d13a89d17853111869b71537befe58a00369200ee6ed3bf2dc6c
SHA512 eb5fc6318d86697011d46c351a2cd7b8466802ea6a16b981126434e6c85a44357538947025e19aa61e02a261608f169ffa044212f95630c45ce6a6e49ae85005

memory/4656-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4476-19-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4656-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4656-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4656-28-0x0000000000500000-0x0000000000510000-memory.dmp