Malware Analysis Report

2025-04-03 19:53

Sample ID 241109-xamlyasnek
Target 2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker
SHA256 5d98071135227b0f1cee8e1ffafbbc70148ec2ce67b97ea08000f3b9b0289b7a
Tags
upx discovery
score
7/10

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
7/10

SHA256

5d98071135227b0f1cee8e1ffafbbc70148ec2ce67b97ea08000f3b9b0289b7a

Threat Level: Shows suspicious behavior

The file 2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx discovery

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Unsigned PE

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 18:39

Signatures

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

2024-11-09 18:39

Reported

2024-11-09 18:41

Platform

win7-20241010-en

Max time kernel

141s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe"

Signatures

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\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_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 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp

Files

memory/2344-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2344-1-0x0000000000340000-0x0000000000346000-memory.dmp

memory/2344-9-0x0000000000340000-0x0000000000346000-memory.dmp

memory/2344-2-0x0000000000370000-0x0000000000376000-memory.dmp

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

MD5 7791cb0245dd7033123f4b9257171957
SHA1 69b083e578638afcfb41a8368cba464dcbf3f870
SHA256 096dadec574232f58a2814ca019ebe34599fde3801601aab44eade4c26c30c34
SHA512 b5a87bc9db4679603a60b2e691f64f2f0250a8ee175c0ee28745b48d29c396f1b3c91422731b2f04e48a472eb44af9f6ca8d0d3cbba5f3f65c316082e82658c3

memory/2344-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2040-18-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2040-19-0x0000000000270000-0x0000000000276000-memory.dmp

memory/2040-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 18:39

Reported

2024-11-09 18:41

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\asih.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 74.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 106.209.201.84.in-addr.arpa udp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp

Files

memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/956-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/956-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/956-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

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

MD5 7791cb0245dd7033123f4b9257171957
SHA1 69b083e578638afcfb41a8368cba464dcbf3f870
SHA256 096dadec574232f58a2814ca019ebe34599fde3801601aab44eade4c26c30c34
SHA512 b5a87bc9db4679603a60b2e691f64f2f0250a8ee175c0ee28745b48d29c396f1b3c91422731b2f04e48a472eb44af9f6ca8d0d3cbba5f3f65c316082e82658c3

memory/956-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2964-26-0x0000000000500000-0x0000000000510000-memory.dmp