Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1lbwcs1gpe
Target 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker
SHA256 8b457ca6057494896c71260c426a73e4413867c0d63c11cb68d38b2da649698a
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

8b457ca6057494896c71260c426a73e4413867c0d63c11cb68d38b2da649698a

Threat Level: Known bad

The file 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

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 Samples

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:43

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 21:43

Reported

2024-06-10 21:46

Platform

win7-20240221-en

Max time kernel

149s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_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_f23d3106fdd4e6193c79d4b333731016_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_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_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 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp

Files

memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2244-1-0x0000000000420000-0x0000000000426000-memory.dmp

memory/2244-8-0x0000000000420000-0x0000000000426000-memory.dmp

memory/2244-2-0x0000000000450000-0x0000000000456000-memory.dmp

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

MD5 9e884791485b563d4e5d2c7a9050e57f
SHA1 67cc987d9b0f16503d94f0c5ed61457df793bb90
SHA256 4db7708147ee9692141e86bd09d21f946ff1e28fec57f35545bbf8cb0e702b09
SHA512 3a5e781af38af3ef5da1444990ff18188604a887c457b49402eaece459bb02343e1142159635fb233e9348b63c3ad6c5cb72ba03da551dddad03dd6c54ddac65

memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2244-14-0x00000000009A0000-0x00000000009B0000-memory.dmp

memory/3020-19-0x0000000000330000-0x0000000000336000-memory.dmp

memory/3020-20-0x0000000000360000-0x0000000000366000-memory.dmp

memory/3020-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:43

Reported

2024-06-10 21:46

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

162s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_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\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe"

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4012 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 89.65.42.20.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp

Files

memory/4768-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4768-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/4768-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

memory/4768-3-0x0000000002100000-0x0000000002106000-memory.dmp

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

MD5 9e884791485b563d4e5d2c7a9050e57f
SHA1 67cc987d9b0f16503d94f0c5ed61457df793bb90
SHA256 4db7708147ee9692141e86bd09d21f946ff1e28fec57f35545bbf8cb0e702b09
SHA512 3a5e781af38af3ef5da1444990ff18188604a887c457b49402eaece459bb02343e1142159635fb233e9348b63c3ad6c5cb72ba03da551dddad03dd6c54ddac65

memory/4768-14-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1484-19-0x00000000007C0000-0x00000000007C6000-memory.dmp

memory/1484-20-0x00000000007E0000-0x00000000007E6000-memory.dmp

memory/1484-26-0x0000000000500000-0x0000000000510000-memory.dmp