Malware Analysis Report

2025-04-14 03:45

Sample ID 240612-xgff7szbpq
Target 2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker
SHA256 279eeb24428ff9c5b6460b89ac51f94cbdf5fe5912b9829b13ff85f4fcb00b85
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

279eeb24428ff9c5b6460b89ac51f94cbdf5fe5912b9829b13ff85f4fcb00b85

Threat Level: Known bad

The file 2024-06-12_61304570d99fe7aaecffd49beecec94d_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

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Executes dropped EXE

UPX packed file

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

2024-06-12 18:49

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

Detection of Cryptolocker Samples

Description Indicator Process Target
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

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

2024-06-12 18:49

Reported

2024-06-12 18:51

Platform

win7-20240419-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_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\2024-06-12_61304570d99fe7aaecffd49beecec94d_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\2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_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/2236-2-0x0000000000380000-0x0000000000386000-memory.dmp

memory/2236-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2236-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2236-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 98131efd313ad10bdf7b6ecd0600cd78
SHA1 6db8e4d6ec504c02297c0d1ff92f0dd05ecb4150
SHA256 88228f32a52678f117477e2021ab361d8e1d712c34aad7c7cee970e1d27883a5
SHA512 deba179242ac7fc7ad7a36cde5219c069ba9443552ddcb660fb8fd10fd0b2e9c97ff8dfe0943437a775f7b9da5cb5268e8b63b6c6bbb1d9ed8807e17e7187c1e

memory/2236-13-0x0000000001D30000-0x0000000001D40000-memory.dmp

memory/2236-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2476-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2476-20-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2476-27-0x0000000000320000-0x0000000000326000-memory.dmp

memory/2476-28-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-12 18:49

Reported

2024-06-12 18:51

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_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\2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_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/3904-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3904-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/3904-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/3904-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 98131efd313ad10bdf7b6ecd0600cd78
SHA1 6db8e4d6ec504c02297c0d1ff92f0dd05ecb4150
SHA256 88228f32a52678f117477e2021ab361d8e1d712c34aad7c7cee970e1d27883a5
SHA512 deba179242ac7fc7ad7a36cde5219c069ba9443552ddcb660fb8fd10fd0b2e9c97ff8dfe0943437a775f7b9da5cb5268e8b63b6c6bbb1d9ed8807e17e7187c1e

memory/3904-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2216-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2216-26-0x0000000000500000-0x0000000000510000-memory.dmp