Malware Analysis Report

2025-01-18 14:44

Sample ID 240613-d4adxssgmg
Target 2024-06-13_4fb7536f96f1a11faa58e189f2288b74_cryptolocker
SHA256 4ae36a1b8b0d67615388caa82cf970cbfeb0948c6d060fdabfa0a8236dc7adef
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

4ae36a1b8b0d67615388caa82cf970cbfeb0948c6d060fdabfa0a8236dc7adef

Threat Level: Known bad

The file 2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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 Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Loads dropped DLL

Checks computer location settings

UPX packed file

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:33

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

2024-06-13 03:33

Reported

2024-06-13 03:35

Platform

win7-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2060-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2060-3-0x00000000002A0000-0x00000000002A6000-memory.dmp

memory/2060-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

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

MD5 15185ddc3e4b8a4de7163a75e68dc1fc
SHA1 7a202351854704e8453afcc59762bc162b0f39b8
SHA256 5b0fd32c359ab81efa4b25b075752e3a29a6c054e03eb74cde36f540afdf6636
SHA512 776cf8933863f06f9509ca8fc940b71f3de0230ae3663b9173e3ff8f4c655bbf4ee7228c883a646b8a1c075e07899e80b751314fb4267e9da55f3fccf9bc971f

memory/2700-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2700-19-0x0000000000280000-0x0000000000286000-memory.dmp

memory/2700-26-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2700-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:33

Reported

2024-06-13 03:35

Platform

win10v2004-20240611-en

Max time kernel

147s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4fb7536f96f1a11faa58e189f2288b74_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 8.8.8.8.in-addr.arpa udp
US 3.18.7.81:443 emrlogistics.com tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 3.19.116.195:443 emrlogistics.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.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
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/4936-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4936-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4936-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4936-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 15185ddc3e4b8a4de7163a75e68dc1fc
SHA1 7a202351854704e8453afcc59762bc162b0f39b8
SHA256 5b0fd32c359ab81efa4b25b075752e3a29a6c054e03eb74cde36f540afdf6636
SHA512 776cf8933863f06f9509ca8fc940b71f3de0230ae3663b9173e3ff8f4c655bbf4ee7228c883a646b8a1c075e07899e80b751314fb4267e9da55f3fccf9bc971f

memory/4936-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2356-25-0x0000000000500000-0x0000000000510000-memory.dmp