Malware Analysis Report

2025-04-14 03:47

Sample ID 240612-sx74yatfmj
Target 2024-06-12_d93ec1ced0b5f69c389fd03d045de855_cryptolocker
SHA256 befb1365ce83ffd7d66fed4ce9495cad45f33029ce9a661f981ad036546a7702
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

befb1365ce83ffd7d66fed4ce9495cad45f33029ce9a661f981ad036546a7702

Threat Level: Known bad

The file 2024-06-12_d93ec1ced0b5f69c389fd03d045de855_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-12 15:31

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: behavioral2

Detonation Overview

Submitted

2024-06-12 15:31

Reported

2024-06-12 15:33

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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_d93ec1ced0b5f69c389fd03d045de855_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 114.83.221.88.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa 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

Files

memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2456-1-0x00000000007C0000-0x00000000007C6000-memory.dmp

memory/2456-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

memory/2456-9-0x00000000007C0000-0x00000000007C6000-memory.dmp

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

MD5 ec75422326eeb960e3eb62f6f1a63aed
SHA1 9e1f20c444f5cb3c4b550b58f0d96fbd543e0916
SHA256 cccd250bacda6dee0b04f187ce96d4fbbd40384addcda3f5b88be56decdee88a
SHA512 e856894119e23ba3a5f6ff355350a64ae16b719b15acda72a14a23bbfa3948dd1322bda73a086134a1cde186d9b045ca2e6543479c383d06b37d2b972fc9f7a8

memory/3932-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2456-25-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3932-19-0x0000000000660000-0x0000000000666000-memory.dmp

memory/3932-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/3932-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-12 15:31

Reported

2024-06-12 15:33

Platform

win7-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-12_d93ec1ced0b5f69c389fd03d045de855_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/1868-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1868-1-0x0000000000420000-0x0000000000426000-memory.dmp

memory/1868-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/1868-9-0x0000000000420000-0x0000000000426000-memory.dmp

memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1868-15-0x0000000000500000-0x0000000000510000-memory.dmp

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

MD5 ec75422326eeb960e3eb62f6f1a63aed
SHA1 9e1f20c444f5cb3c4b550b58f0d96fbd543e0916
SHA256 cccd250bacda6dee0b04f187ce96d4fbbd40384addcda3f5b88be56decdee88a
SHA512 e856894119e23ba3a5f6ff355350a64ae16b719b15acda72a14a23bbfa3948dd1322bda73a086134a1cde186d9b045ca2e6543479c383d06b37d2b972fc9f7a8

memory/3020-25-0x0000000000300000-0x0000000000306000-memory.dmp

memory/3020-18-0x0000000000340000-0x0000000000346000-memory.dmp

memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp