Malware Analysis Report

2025-04-14 02:35

Sample ID 240603-mlxwyacf89
Target 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker
SHA256 81b87de5f20ca243f95d8d87597191a84f99843b97d6b7004415bab761fc9979
Tags
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

81b87de5f20ca243f95d8d87597191a84f99843b97d6b7004415bab761fc9979

Threat Level: Known bad

The file 2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker was found to be: Known bad.

Malicious Activity Summary


UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 10:33

Signatures

Detection of CryptoLocker Variants

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 10:33

Reported

2024-06-03 10:36

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_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

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\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_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
US 3.130.204.160:443 emrlogistics.com tcp

Files

memory/2036-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2036-1-0x0000000000420000-0x0000000000426000-memory.dmp

memory/2036-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2036-9-0x0000000000420000-0x0000000000426000-memory.dmp

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

MD5 d57f541d8e4fbdc01b70f1af9594c1e9
SHA1 8724ac5296ce819aeaf3472c540213c4c52bbc3f
SHA256 b1cd45893b63aa5a20fa469d78141cc49eed1b426f81c034d80289ef20a400a2
SHA512 c46d5b2c2786414307038fc00ff13da7d12c7f7ee4994d04dd01abf63992c112e06bc25af1dbb17d6fd03a4aae35d266e4090ff00d5c6c8f59d491d84821c9e4

memory/2036-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2092-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2092-26-0x0000000000320000-0x0000000000326000-memory.dmp

memory/2092-19-0x0000000000370000-0x0000000000376000-memory.dmp

memory/2092-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 10:33

Reported

2024-06-03 10:36

Platform

win10v2004-20240426-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_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

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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7e01817dc3ddb01bff675c1974210154_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 emrlogistics.com udp
US 3.130.253.23:443 emrlogistics.com tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 3.130.204.160:443 emrlogistics.com tcp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 3.130.253.23:443 emrlogistics.com tcp
US 8.8.8.8:53 106.90.14.23.in-addr.arpa udp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
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

Files

memory/540-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/540-1-0x0000000000490000-0x0000000000496000-memory.dmp

memory/540-2-0x0000000000490000-0x0000000000496000-memory.dmp

memory/540-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

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

MD5 d57f541d8e4fbdc01b70f1af9594c1e9
SHA1 8724ac5296ce819aeaf3472c540213c4c52bbc3f
SHA256 b1cd45893b63aa5a20fa469d78141cc49eed1b426f81c034d80289ef20a400a2
SHA512 c46d5b2c2786414307038fc00ff13da7d12c7f7ee4994d04dd01abf63992c112e06bc25af1dbb17d6fd03a4aae35d266e4090ff00d5c6c8f59d491d84821c9e4

memory/540-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4996-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

memory/4996-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/4996-27-0x0000000000500000-0x0000000000510000-memory.dmp