Malware Analysis Report

2025-01-18 14:34

Sample ID 240613-ecy4msxalr
Target 2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_cryptolocker
SHA256 e2fb91407ee6e19c547d88de342b0f9af57fb6c8f3070597f91d5be4eb9be2d8
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

e2fb91407ee6e19c547d88de342b0f9af57fb6c8f3070597f91d5be4eb9be2d8

Threat Level: Known bad

The file 2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Executes dropped EXE

Checks computer location settings

UPX packed file

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:48

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

2024-06-13 03:48

Reported

2024-06-13 03:51

Platform

win7-20240611-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp

Files

memory/1756-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1756-1-0x0000000000340000-0x0000000000346000-memory.dmp

memory/1756-2-0x0000000000370000-0x0000000000376000-memory.dmp

memory/1756-9-0x0000000000340000-0x0000000000346000-memory.dmp

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

MD5 7a4a0d11ae3b42a51325ddad7422e876
SHA1 b08a09304b6a8a31d79d681f83a2a7463bdf6a59
SHA256 33fb1723fd3b338041587fd1d8c63020fdf775f52faf4a3c3f96a35027e40989
SHA512 795a6a745c25539cb890766ca4d054f983b42bb7dc67b60d7c4648069ef050f400f7c949df5cf23221540490d8fae9ddb19ff2a67844fec1ad489af1049dc2d1

memory/2816-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1756-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2816-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2816-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2816-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:48

Reported

2024-06-13 03:51

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_bb4312a823e22c3b282c7ecd2dc908c1_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 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.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 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 144.107.17.2.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

Files

memory/1724-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1724-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/1724-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/1724-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 7a4a0d11ae3b42a51325ddad7422e876
SHA1 b08a09304b6a8a31d79d681f83a2a7463bdf6a59
SHA256 33fb1723fd3b338041587fd1d8c63020fdf775f52faf4a3c3f96a35027e40989
SHA512 795a6a745c25539cb890766ca4d054f983b42bb7dc67b60d7c4648069ef050f400f7c949df5cf23221540490d8fae9ddb19ff2a67844fec1ad489af1049dc2d1

memory/116-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1724-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/116-20-0x0000000002070000-0x0000000002076000-memory.dmp

memory/116-26-0x0000000000840000-0x0000000000846000-memory.dmp

memory/116-27-0x0000000000500000-0x0000000000510000-memory.dmp