Malware Analysis Report

2025-08-10 21:29

Sample ID 240527-w5vqcsee35
Target 2024-05-27_58bc0995e863bc35be5340147bbde4fa_cryptolocker
SHA256 7c1d119a1ae87314d16626dcf1d660bc059a5237e91938d7dc29f50420c85499
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

7c1d119a1ae87314d16626dcf1d660bc059a5237e91938d7dc29f50420c85499

Threat Level: Known bad

The file 2024-05-27_58bc0995e863bc35be5340147bbde4fa_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

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-27 18:30

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

2024-05-27 18:30

Reported

2024-05-27 18:33

Platform

win7-20240221-en

Max time kernel

148s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_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\2024-05-27_58bc0995e863bc35be5340147bbde4fa_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_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 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

Files

memory/2832-0-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2832-1-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2832-2-0x0000000000340000-0x0000000000346000-memory.dmp

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

MD5 5b37790ecf1dd1a69acd1d97ce12032e
SHA1 c4f8c7fd7e355646f8c31679e1aa0bb82d0da819
SHA256 9b2fba8a1c84c3aea63f8a608e5709e6e3331a5cce6f244cc6f566d1e218c97c
SHA512 a1734ed5a96f3b418d5e00183789117e751e5ec0f7fce8950d88e6f2c2046e752833ea7645f0ebc70eaadcdf66f7daeaf0241a8615bdd80df9ea90231c2545fa

memory/2600-22-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2600-15-0x0000000000310000-0x0000000000316000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-27 18:30

Reported

2024-05-27 18:33

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_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\2024-05-27_58bc0995e863bc35be5340147bbde4fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_58bc0995e863bc35be5340147bbde4fa_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 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
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 71.31.126.40.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 18.119.154.66:443 emrlogistics.com tcp
US 8.8.8.8:53 18.24.18.2.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 22.236.111.52.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 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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 3.140.13.188:443 emrlogistics.com tcp
US 18.119.154.66:443 emrlogistics.com tcp
US 3.140.13.188:443 emrlogistics.com tcp
US 8.8.8.8:53 15.173.189.20.in-addr.arpa udp

Files

memory/4328-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4328-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4328-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 5b37790ecf1dd1a69acd1d97ce12032e
SHA1 c4f8c7fd7e355646f8c31679e1aa0bb82d0da819
SHA256 9b2fba8a1c84c3aea63f8a608e5709e6e3331a5cce6f244cc6f566d1e218c97c
SHA512 a1734ed5a96f3b418d5e00183789117e751e5ec0f7fce8950d88e6f2c2046e752833ea7645f0ebc70eaadcdf66f7daeaf0241a8615bdd80df9ea90231c2545fa

memory/2988-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/2988-23-0x00000000006A0000-0x00000000006A6000-memory.dmp