Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1fzp8s1enb
Target 2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker
SHA256 451a4d4b2fa6f735b20ae8c90402b6b75446480756204509bb8e9d2456de3ae3
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

451a4d4b2fa6f735b20ae8c90402b6b75446480756204509bb8e9d2456de3ae3

Threat Level: Known bad

The file 2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:36

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

2024-06-10 21:36

Reported

2024-06-10 21:38

Platform

win7-20240220-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_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
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
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
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\2024-06-10_98768e8703a5b946d5548b8321c988fa_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
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_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 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp

Files

memory/1508-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/1508-1-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1508-2-0x0000000000290000-0x0000000000296000-memory.dmp

memory/1508-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

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

MD5 a9e9539b5dd5a344e4b7cee1819b7cc0
SHA1 42bf68294ee851bba68055db91e423e53c0f968a
SHA256 2b43a49987b48a0fe7eb874ef5e59ab1c2645cfbcb9a83a4d4f1119ac1b8ad88
SHA512 a101caeac621e7a50e2b636996e0ca148ff679d592fd102cc7c834057ab3ba6a995ebd8a1a8b9086ae566c68391086e516aa5987f656e414ffb31531f0766f59

memory/1508-13-0x0000000002AC0000-0x0000000002AD0000-memory.dmp

memory/1508-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2564-20-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2564-19-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2564-27-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2564-28-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:36

Reported

2024-06-10 21:38

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_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\2024-06-10_98768e8703a5b946d5548b8321c988fa_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_98768e8703a5b946d5548b8321c988fa_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 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 3.94.41.167:443 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 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 52.86.6.113:443 emrlogistics.com tcp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 udp

Files

memory/4100-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4100-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

memory/4100-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/4100-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

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

MD5 a9e9539b5dd5a344e4b7cee1819b7cc0
SHA1 42bf68294ee851bba68055db91e423e53c0f968a
SHA256 2b43a49987b48a0fe7eb874ef5e59ab1c2645cfbcb9a83a4d4f1119ac1b8ad88
SHA512 a101caeac621e7a50e2b636996e0ca148ff679d592fd102cc7c834057ab3ba6a995ebd8a1a8b9086ae566c68391086e516aa5987f656e414ffb31531f0766f59

memory/4100-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1196-19-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1196-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/1196-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/1196-28-0x0000000000500000-0x0000000000510000-memory.dmp