Malware Analysis Report

2025-08-05 09:41

Sample ID 240611-bkat8syald
Target 2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_cryptolocker
SHA256 3bb0b983639eb506c05b33dfdec8061b226b3bb6175d559419244634b6949a0e
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3bb0b983639eb506c05b33dfdec8061b226b3bb6175d559419244634b6949a0e

Threat Level: Known bad

The file 2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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 Samples

Detection of CryptoLocker Variants

Checks computer location settings

Loads dropped DLL

Executes dropped EXE

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:11

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: behavioral2

Detonation Overview

Submitted

2024-06-11 01:11

Reported

2024-06-11 01:14

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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/976-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/976-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

memory/976-2-0x0000000002070000-0x0000000002076000-memory.dmp

memory/976-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

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

MD5 e5092896f37d580fe522f4e6239a7aae
SHA1 7c03b9ec02a6cd97998029b44a6bfb25b5622f04
SHA256 379d81c849374ab0f0f02212bb8d44c919cb4a59d22d248c291efbda4f026eaf
SHA512 3d59dec7895d28fdecea6c06cd4ecb0bdfc72e76845ecefcc31addaf7ccd568255c4a8087703bc89cd35b70150634f363f2efbad84ab36eba881ed812ecd179a

memory/3948-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/976-18-0x0000000000500000-0x0000000000510000-memory.dmp

memory/3948-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

memory/3948-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

memory/3948-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-11 01:11

Reported

2024-06-11 01:14

Platform

win7-20240220-en

Max time kernel

149s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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_9c4ada962ebdf0f1254afc212c77dd6b_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_9c4ada962ebdf0f1254afc212c77dd6b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-11_9c4ada962ebdf0f1254afc212c77dd6b_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 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp
US 3.130.204.160:443 emrlogistics.com tcp
US 3.130.253.23:443 emrlogistics.com tcp

Files

memory/2364-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2364-1-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2364-3-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2364-2-0x00000000001D0000-0x00000000001D6000-memory.dmp

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

MD5 e5092896f37d580fe522f4e6239a7aae
SHA1 7c03b9ec02a6cd97998029b44a6bfb25b5622f04
SHA256 379d81c849374ab0f0f02212bb8d44c919cb4a59d22d248c291efbda4f026eaf
SHA512 3d59dec7895d28fdecea6c06cd4ecb0bdfc72e76845ecefcc31addaf7ccd568255c4a8087703bc89cd35b70150634f363f2efbad84ab36eba881ed812ecd179a

memory/2364-12-0x0000000002220000-0x0000000002230000-memory.dmp

memory/2736-25-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2736-24-0x0000000000240000-0x0000000000246000-memory.dmp

memory/2736-17-0x00000000004B0000-0x00000000004B6000-memory.dmp