Malware Analysis Report

2025-04-14 04:17

Sample ID 240609-jda6esff5s
Target 2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker
SHA256 38d54562bfc0911c7da587f8ce77bace6e873a2dde7e048a6aec38d3b0c34524
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

38d54562bfc0911c7da587f8ce77bace6e873a2dde7e048a6aec38d3b0c34524

Threat Level: Known bad

The file 2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-09 07:33

Signatures

Detection of CryptoLocker Variants

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

Detection of Cryptolocker Samples

Description Indicator Process Target
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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-09 07:32

Reported

2024-06-09 07:37

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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
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
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
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\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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 3.94.41.167:443 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
US 52.86.6.113:443 emrlogistics.com tcp

Files

memory/2460-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2460-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2460-2-0x0000000000390000-0x0000000000396000-memory.dmp

memory/2460-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 ec1eac9d402a6c4853321290a81ae641
SHA1 cd216df090423b82c2e208ccefcbd56235572b45
SHA256 05a7ec8d490540d482a5ed0ab613ad2f912a9877e87da7834bbc8efc46536f47
SHA512 513e38697e89689d6cc17b6bc1721b2bde7557b9d3701e34fb261f38876ab5f3084a4f15e7c6bd68a1d273aea25db45e01203188e607405cf7443867fa0c458c

memory/2460-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

memory/2460-16-0x0000000000500000-0x000000000050F311-memory.dmp

memory/1884-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/1884-19-0x0000000000470000-0x0000000000476000-memory.dmp

memory/1884-26-0x0000000000430000-0x0000000000436000-memory.dmp

memory/1884-27-0x0000000000500000-0x000000000050F311-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-09 07:32

Reported

2024-06-09 07:37

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-09_9db34b4cee6971c03bf44f646ad3fa6b_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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
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/4400-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/4400-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

memory/4400-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

memory/4400-9-0x00000000007B0000-0x00000000007B6000-memory.dmp

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

MD5 ec1eac9d402a6c4853321290a81ae641
SHA1 cd216df090423b82c2e208ccefcbd56235572b45
SHA256 05a7ec8d490540d482a5ed0ab613ad2f912a9877e87da7834bbc8efc46536f47
SHA512 513e38697e89689d6cc17b6bc1721b2bde7557b9d3701e34fb261f38876ab5f3084a4f15e7c6bd68a1d273aea25db45e01203188e607405cf7443867fa0c458c

memory/4400-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2792-18-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2792-20-0x0000000000660000-0x0000000000666000-memory.dmp

memory/2792-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/2792-27-0x0000000000500000-0x000000000050F311-memory.dmp