Malware Analysis Report

2025-01-18 14:04

Sample ID 240613-dcvksavhnp
Target 2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker
SHA256 4c5992f4dd6efd13a97340ba09cc04d5443c8ab6f47f5d3f7f1ddd62c7f4709d
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

4c5992f4dd6efd13a97340ba09cc04d5443c8ab6f47f5d3f7f1ddd62c7f4709d

Threat Level: Known bad

The file 2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

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

2024-06-13 02:52

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

Detection of Cryptolocker Samples

Description Indicator Process Target
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

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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 02:52

Reported

2024-06-13 02:54

Platform

win7-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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/2256-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2256-1-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2256-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2256-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

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

MD5 7fd1c8e0b135ef4fa6a2a2004715af9c
SHA1 f629bafd640fd8c56dce10eaa3b5266c021f857a
SHA256 0385c43de34c02df12e4c8b10489ac61a3877b7c1e4f317499df674a2bdf8ae4
SHA512 7d5ae13febb618d41a093ac03c2d4e18a21e464d0d541fd8c75ae0c33c8e3ed7276c3085c26eaa07f0deb63edd255846a30778afbcbaacc37167f090023edc0a

memory/2256-13-0x0000000000630000-0x0000000000640000-memory.dmp

memory/2256-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1932-21-0x0000000000280000-0x0000000000286000-memory.dmp

memory/1932-20-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1932-19-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 02:52

Reported

2024-06-13 02:54

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_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/1180-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1180-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/1180-4-0x00000000006B0000-0x00000000006B6000-memory.dmp

memory/1180-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

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

MD5 7fd1c8e0b135ef4fa6a2a2004715af9c
SHA1 f629bafd640fd8c56dce10eaa3b5266c021f857a
SHA256 0385c43de34c02df12e4c8b10489ac61a3877b7c1e4f317499df674a2bdf8ae4
SHA512 7d5ae13febb618d41a093ac03c2d4e18a21e464d0d541fd8c75ae0c33c8e3ed7276c3085c26eaa07f0deb63edd255846a30778afbcbaacc37167f090023edc0a

memory/1180-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4156-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4156-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/4156-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4156-27-0x0000000000500000-0x0000000000510000-memory.dmp