Malware Analysis Report

2025-04-14 02:51

Sample ID 240603-jk8ehahf28
Target 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker
SHA256 5d6f29a54e4ebee9959e286bf49ee4e3ff280edb6231c87eaba4532f14af7915
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

5d6f29a54e4ebee9959e286bf49ee4e3ff280edb6231c87eaba4532f14af7915

Threat Level: Known bad

The file 2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Checks computer location settings

UPX packed file

Loads dropped DLL

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 07:44

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

2024-06-03 07:44

Reported

2024-06-03 07:47

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_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\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_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\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_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 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp

Files

memory/2400-0-0x0000000000420000-0x0000000000426000-memory.dmp

memory/2400-8-0x0000000000420000-0x0000000000426000-memory.dmp

memory/2400-7-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2400-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

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

MD5 1cc32f094c3f4a57673425f9654fc033
SHA1 8d2e94ec7b62778a478eecb31c9764d8501b384b
SHA256 6daa110754b84c3705318b61d3e7ade22101bfd17f72709694b6e36b4ed00898
SHA512 e3961b4d426a93956b7b0a18081d961fef59b85596509ea84edfeeff36d3b118a8aa2536edd3c326d87b326a79c28b6aa7a2eda33b3a89ca116155bda6d6f4f3

memory/1036-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2400-14-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1036-18-0x0000000000600000-0x0000000000606000-memory.dmp

memory/1036-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1036-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 07:44

Reported

2024-06-03 07:47

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_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\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_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\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c489b30c1613bf60f71f6bc81d6a82f3_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 54.209.32.212:443 emrlogistics.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 52.71.57.184:443 emrlogistics.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.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 43.58.199.20.in-addr.arpa udp
US 54.209.32.212:443 emrlogistics.com tcp
US 8.8.8.8:53 227.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa 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 8.8.8.8:53 90.16.208.104.in-addr.arpa udp

Files

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

memory/2356-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

memory/2356-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

memory/2356-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

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

MD5 1cc32f094c3f4a57673425f9654fc033
SHA1 8d2e94ec7b62778a478eecb31c9764d8501b384b
SHA256 6daa110754b84c3705318b61d3e7ade22101bfd17f72709694b6e36b4ed00898
SHA512 e3961b4d426a93956b7b0a18081d961fef59b85596509ea84edfeeff36d3b118a8aa2536edd3c326d87b326a79c28b6aa7a2eda33b3a89ca116155bda6d6f4f3

memory/3360-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2356-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3360-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/3360-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/3360-27-0x0000000000500000-0x0000000000510000-memory.dmp