Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1jrtss1gja
Target 2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_cryptolocker
SHA256 ae4874c36d7efe3ca054ae6cbbcc7c3725fe9aa8c3a76e113edce4d46585d0fd
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

ae4874c36d7efe3ca054ae6cbbcc7c3725fe9aa8c3a76e113edce4d46585d0fd

Threat Level: Known bad

The file 2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Executes dropped EXE

Loads dropped DLL

UPX packed file

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:41

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

2024-06-10 21:41

Reported

2024-06-10 21:43

Platform

win7-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/1700-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1700-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1700-2-0x0000000000280000-0x0000000000286000-memory.dmp

memory/1700-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 2a17664ae543d63eccdcd70ddb2ba347
SHA1 cf3ef05e703b0f648b099d017babd376a66ac711
SHA256 abd869a36a7c4b5f81ccfa82646b9f4107eae7032466eedd9f614528c88d822c
SHA512 311c2cb3ed7ac16849d222de7b8bc39a73fda51019ea2c934f53925931dec9143576a67bb6299db5a5f4925c667df1f2c85d227cb97322b74b63570a2c4beb0b

memory/1700-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2068-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2068-18-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2068-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2068-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:41

Reported

2024-06-10 21:43

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_d3c2c74b97abb84ad66f2b6fbd21012a_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 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/1392-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1392-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

memory/1392-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

memory/1392-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

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

MD5 2a17664ae543d63eccdcd70ddb2ba347
SHA1 cf3ef05e703b0f648b099d017babd376a66ac711
SHA256 abd869a36a7c4b5f81ccfa82646b9f4107eae7032466eedd9f614528c88d822c
SHA512 311c2cb3ed7ac16849d222de7b8bc39a73fda51019ea2c934f53925931dec9143576a67bb6299db5a5f4925c667df1f2c85d227cb97322b74b63570a2c4beb0b

memory/4052-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1392-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4052-20-0x0000000000870000-0x0000000000876000-memory.dmp

memory/4052-26-0x0000000000660000-0x0000000000666000-memory.dmp

memory/4052-27-0x0000000000500000-0x0000000000510000-memory.dmp