Malware Analysis Report

2025-06-16 07:04

Sample ID 240531-strb1sdb52
Target 2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker
SHA256 c6664951962325b445189b178c59a5af0ba0af4096d9cbcb81acf90619b515b8
Tags
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

c6664951962325b445189b178c59a5af0ba0af4096d9cbcb81acf90619b515b8

Threat Level: Known bad

The file 2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-31 15:25

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

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-31 15:25

Reported

2024-05-31 15:27

Platform

win7-20240508-en

Max time kernel

148s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe"

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

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\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_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 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
US 54.161.222.85:443 emrlogistics.com tcp
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
US 54.161.222.85:443 emrlogistics.com tcp

Files

memory/2956-0-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2956-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2956-8-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 41111690336ac1c727fa504170b83ca9
SHA1 a2f3e074a1f16b7448df1bc2c5a98e6d1bf51d17
SHA256 a870aa04cffb7a957aab99c8eab82bbe6f071d4b065ec9b736ee3ed5d5eb26c1
SHA512 dbb2496e4f53eebd56e39832dd4aedf05d33fd755fa0c99c35b7492c2afc613b02b80a8268b70003f7105b778e194e3b8a36f8b8af7cda395a29a003dd23e1d8

memory/2424-15-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2424-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-31 15:25

Reported

2024-05-31 15:27

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe"

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

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\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-31_038f624ec719ef7249d943f1eaddcf1e_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 emrlogistics.com udp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.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 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp

Files

memory/1336-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/1336-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

memory/1336-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

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

MD5 41111690336ac1c727fa504170b83ca9
SHA1 a2f3e074a1f16b7448df1bc2c5a98e6d1bf51d17
SHA256 a870aa04cffb7a957aab99c8eab82bbe6f071d4b065ec9b736ee3ed5d5eb26c1
SHA512 dbb2496e4f53eebd56e39832dd4aedf05d33fd755fa0c99c35b7492c2afc613b02b80a8268b70003f7105b778e194e3b8a36f8b8af7cda395a29a003dd23e1d8

memory/1860-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/1860-23-0x00000000004D0000-0x00000000004D6000-memory.dmp