Malware Analysis Report

2025-08-05 16:03

Sample ID 240606-1fm2fade25
Target 2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_cryptolocker
SHA256 3c4954218eac6a224125c94835bbb28cc952ef0fad93e058c55b732abff3687d
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

3c4954218eac6a224125c94835bbb28cc952ef0fad93e058c55b732abff3687d

Threat Level: Known bad

The file 2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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

Checks computer location settings

Executes dropped EXE

UPX packed file

Loads dropped DLL

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-06 21:35

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

2024-06-06 21:35

Reported

2024-06-06 21:38

Platform

win7-20240221-en

Max time kernel

149s

Max time network

138s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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 tcp

Files

memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2336-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2336-2-0x00000000002D0000-0x00000000002D6000-memory.dmp

memory/2336-3-0x0000000000470000-0x0000000000476000-memory.dmp

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

MD5 8f8566445173ee20a703809e19c82354
SHA1 87fc5254ff25ea1c7dfa4851f28e9c17950192fe
SHA256 26496d4f35cd11c9185525025c7711313c1da46be326fed4dadd5365f9291454
SHA512 fddc22e49190e9c91969d13d51d74e6b3581dc1c62fd52d1709ccdfbf2fdba7610da04508b10c4d00e95cb64d052625c2f18887b1ec66fce2d4e7a7924b98dad

memory/2336-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2180-18-0x0000000000210000-0x0000000000216000-memory.dmp

memory/2180-25-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2180-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-06 21:35

Reported

2024-06-06 21:38

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-06_cb7bf86ef245dda0b3b347c2eedf287f_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 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp

Files

memory/4648-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4648-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4648-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4648-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 8f8566445173ee20a703809e19c82354
SHA1 87fc5254ff25ea1c7dfa4851f28e9c17950192fe
SHA256 26496d4f35cd11c9185525025c7711313c1da46be326fed4dadd5365f9291454
SHA512 fddc22e49190e9c91969d13d51d74e6b3581dc1c62fd52d1709ccdfbf2fdba7610da04508b10c4d00e95cb64d052625c2f18887b1ec66fce2d4e7a7924b98dad

memory/4712-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4648-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4712-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

memory/4712-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/4712-27-0x0000000000500000-0x0000000000510000-memory.dmp