Malware Analysis Report

2025-04-03 19:53

Sample ID 241109-w8llvszdkq
Target 2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_cryptolocker
SHA256 7d8f4596fe96d608318d9f3c49edc85055f6eb26e46c538d6dc0b8765f715d9a
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

7d8f4596fe96d608318d9f3c49edc85055f6eb26e46c538d6dc0b8765f715d9a

Threat Level: Shows suspicious behavior

The file 2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_cryptolocker was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx discovery

Checks computer location settings

Executes dropped EXE

Loads dropped DLL

UPX packed file

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 18:35

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 18:35

Reported

2024-11-09 18:38

Platform

win7-20241010-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_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_77281728af69a91d69f3adcb3dbf7cfd_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

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_77281728af69a91d69f3adcb3dbf7cfd_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_77281728af69a91d69f3adcb3dbf7cfd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_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 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp

Files

memory/2792-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2792-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2792-2-0x0000000000370000-0x0000000000376000-memory.dmp

memory/2792-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2792-15-0x0000000000500000-0x0000000000510000-memory.dmp

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

MD5 f6d13c957bdc1a942dae24b7634c54b5
SHA1 cbd5180d6db8118cf4648e91ddc4900cd565ac4b
SHA256 45fa7a2ddbf553006dc2175bd832cc6fbf7a907392660573509eafded2ee4f92
SHA512 3199283c9478e93cc3aa545f463f54a515bd4a1772153930cd3dfe2a843e63c625132662ca7a7fff425963063d2641055487d516c95baf29ffef3299ff63faf7

memory/780-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/780-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

memory/780-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 18:35

Reported

2024-11-09 18:38

Platform

win10v2004-20241007-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_cryptolocker.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_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_77281728af69a91d69f3adcb3dbf7cfd_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_77281728af69a91d69f3adcb3dbf7cfd_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-11-09_77281728af69a91d69f3adcb3dbf7cfd_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 18.119.154.66:443 emrlogistics.com tcp
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 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 100.208.201.84.in-addr.arpa udp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 69.209.201.84.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 67.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.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/2612-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2612-1-0x0000000002280000-0x0000000002286000-memory.dmp

memory/2612-2-0x0000000002280000-0x0000000002286000-memory.dmp

memory/2612-3-0x0000000002190000-0x0000000002196000-memory.dmp

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

MD5 f6d13c957bdc1a942dae24b7634c54b5
SHA1 cbd5180d6db8118cf4648e91ddc4900cd565ac4b
SHA256 45fa7a2ddbf553006dc2175bd832cc6fbf7a907392660573509eafded2ee4f92
SHA512 3199283c9478e93cc3aa545f463f54a515bd4a1772153930cd3dfe2a843e63c625132662ca7a7fff425963063d2641055487d516c95baf29ffef3299ff63faf7

memory/2612-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2292-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/2292-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/2292-26-0x0000000000500000-0x0000000000510000-memory.dmp