Malware Analysis Report

2025-08-05 09:41

Sample ID 240611-bmzw5syfrk
Target 2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_cryptolocker
SHA256 642a937703929eb905b527336d2b6472d36837e462e3f58942608727896dd4b6
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

642a937703929eb905b527336d2b6472d36837e462e3f58942608727896dd4b6

Threat Level: Known bad

The file 2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Loads dropped DLL

Executes dropped EXE

UPX packed file

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:16

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

2024-06-11 01:16

Reported

2024-06-11 01:18

Platform

win7-20240419-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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

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\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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/2888-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2888-1-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2888-2-0x0000000000340000-0x0000000000346000-memory.dmp

memory/2888-9-0x0000000000240000-0x0000000000246000-memory.dmp

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

MD5 873d54eda494371edd52d08b35902e35
SHA1 be42732bc7482671616bbae9b0e267cf4f462c16
SHA256 daec362e59234a4361adb73c6415ccc432a6a55d4b1ff91bc72a306c79f699a7
SHA512 f8b63351a84b6e1351f93860793bb1ff984b0f4981e376ccdf9228061965c6601a326f4594460b6b37dea9953cca4911e7e6d8a867d4d2e196643faea43add9d

memory/2888-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2832-22-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2832-17-0x0000000000380000-0x0000000000386000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 01:16

Reported

2024-06-11 01:19

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_d5a46cfd3beb5e753bb64f9bbcc7e8ea_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 8.8.8.8.in-addr.arpa 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
US 8.8.8.8:53 emrlogistics.com udp

Files

memory/3952-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3952-3-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/3952-2-0x0000000000680000-0x0000000000686000-memory.dmp

memory/3952-1-0x0000000000680000-0x0000000000686000-memory.dmp

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

MD5 873d54eda494371edd52d08b35902e35
SHA1 be42732bc7482671616bbae9b0e267cf4f462c16
SHA256 daec362e59234a4361adb73c6415ccc432a6a55d4b1ff91bc72a306c79f699a7
SHA512 f8b63351a84b6e1351f93860793bb1ff984b0f4981e376ccdf9228061965c6601a326f4594460b6b37dea9953cca4911e7e6d8a867d4d2e196643faea43add9d

memory/3952-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4920-19-0x0000000002090000-0x0000000002096000-memory.dmp

memory/4920-25-0x0000000000520000-0x0000000000526000-memory.dmp

memory/4920-26-0x0000000000500000-0x0000000000510000-memory.dmp