Malware Analysis Report

2025-08-10 21:44

Sample ID 240610-fblbtsch32
Target 2024-06-10_4025e9ab35ae133335b3c99f5a14d796_cryptolocker
SHA256 737affe979ce52bfa354fd63025cd8aa2146122d01c88270d3367b945d684cf1
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

737affe979ce52bfa354fd63025cd8aa2146122d01c88270d3367b945d684cf1

Threat Level: Known bad

The file 2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

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 04:41

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 04:41

Reported

2024-06-10 04:44

Platform

win7-20240221-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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_4025e9ab35ae133335b3c99f5a14d796_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_4025e9ab35ae133335b3c99f5a14d796_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
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 3.94.41.167:443 emrlogistics.com tcp

Files

memory/612-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/612-1-0x0000000000280000-0x0000000000286000-memory.dmp

memory/612-3-0x00000000003B0000-0x00000000003B6000-memory.dmp

memory/612-2-0x0000000000280000-0x0000000000286000-memory.dmp

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

MD5 29fbea81a546579211387e171b11ab1e
SHA1 9838493a31647e6fbacd77f7bc22f45a5c2934bc
SHA256 89353b349ad37bb7661e4d2fab92df99fcd518a9a5a3c5a37e5d5b06bd41f99b
SHA512 0171b1bcb0fb92f37b9c5e42bf6c1e2413caad36d3bda6dbd75f000860f33566a4413cd444ffba5bf069437719cd33eb44843fa31e4177966dab1b98c2934c42

memory/612-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2152-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2152-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2152-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/2152-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 04:41

Reported

2024-06-10 04:44

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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_4025e9ab35ae133335b3c99f5a14d796_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_4025e9ab35ae133335b3c99f5a14d796_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 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.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 24.73.42.20.in-addr.arpa udp

Files

memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1008-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/1008-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/1008-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

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

MD5 29fbea81a546579211387e171b11ab1e
SHA1 9838493a31647e6fbacd77f7bc22f45a5c2934bc
SHA256 89353b349ad37bb7661e4d2fab92df99fcd518a9a5a3c5a37e5d5b06bd41f99b
SHA512 0171b1bcb0fb92f37b9c5e42bf6c1e2413caad36d3bda6dbd75f000860f33566a4413cd444ffba5bf069437719cd33eb44843fa31e4177966dab1b98c2934c42

memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4512-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4512-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4512-26-0x0000000000500000-0x0000000000510000-memory.dmp