Malware Analysis Report

2025-04-14 00:32

Sample ID 240601-w24tvsbg33
Target 2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_cryptolocker
SHA256 d5cc71a54774fbcbc8eae09802498c5b3d9489f32b9eec49fa88be00f5e7fef1
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

d5cc71a54774fbcbc8eae09802498c5b3d9489f32b9eec49fa88be00f5e7fef1

Threat Level: Known bad

The file 2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Executes dropped EXE

Checks computer location settings

UPX packed file

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 18:25

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

2024-06-01 18:25

Reported

2024-06-01 18:28

Platform

win7-20231129-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp

Files

memory/2184-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2184-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2184-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2184-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 ee5e090bb6194d75c3e602af5f8bc49a
SHA1 fbe5b2ab65c1b2b6ea06687857ceab1e9521915c
SHA256 39d63e44883f8e15cf5b3b90d35ca99f0250857c616bc80804e4ac763fef563a
SHA512 e44101ed813db8117c36edfeeb48947e41e62e43860ffe0f6a0a7b68bd04ae48438f112988e77486f39802768ebb54beb0c3127bf940bc68760984b2db980864

memory/2184-13-0x0000000002420000-0x0000000002430000-memory.dmp

memory/2348-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2184-16-0x0000000000500000-0x000000000050F311-memory.dmp

memory/2348-19-0x0000000000380000-0x0000000000386000-memory.dmp

memory/2348-26-0x0000000000500000-0x000000000050F311-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 18:25

Reported

2024-06-01 18:28

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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

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

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_48b95a60ac891a5b3fd7d67ad32b0f26_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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
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 8.8.8.8:53 udp

Files

memory/3504-0-0x0000000000500000-0x000000000050F311-memory.dmp

memory/3504-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/3504-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

memory/3504-9-0x00000000006C0000-0x00000000006C6000-memory.dmp

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

MD5 ee5e090bb6194d75c3e602af5f8bc49a
SHA1 fbe5b2ab65c1b2b6ea06687857ceab1e9521915c
SHA256 39d63e44883f8e15cf5b3b90d35ca99f0250857c616bc80804e4ac763fef563a
SHA512 e44101ed813db8117c36edfeeb48947e41e62e43860ffe0f6a0a7b68bd04ae48438f112988e77486f39802768ebb54beb0c3127bf940bc68760984b2db980864

memory/3504-17-0x0000000000500000-0x000000000050F311-memory.dmp

memory/4388-24-0x00000000005D0000-0x00000000005D6000-memory.dmp

memory/4388-25-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/4388-26-0x0000000000500000-0x000000000050F311-memory.dmp