Malware Analysis Report

2025-08-11 06:09

Sample ID 240610-1559basfnb
Target 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker
SHA256 fe6bbcaec64241f1ca753d992e3d432818b7415b3b65868b8bc8181be9237f43
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

fe6bbcaec64241f1ca753d992e3d432818b7415b3b65868b8bc8181be9237f43

Threat Level: Known bad

The file 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

Executes dropped EXE

Loads dropped DLL

UPX packed file

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 22:14

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 22:14

Reported

2024-06-10 22:17

Platform

win7-20240508-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_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

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_eac309ce599ba3c9b813d3c972d12a16_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_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/1368-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1368-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1368-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/1368-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

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

MD5 e3961939866b0f0afb9ef6eee44f4577
SHA1 d36fa0cc909a13e946c7eaca8f98ec64ae4428ae
SHA256 4268f77ee4484f20f075d951e66ff87e1a47f87989565b6f98c40cc3623f802b
SHA512 457546c62bd2f0cff6d11032dd9674da3565536fa04f83f38800057707be0d40cc89561b47b32890f332e8424a24c422121c07a010da5244349e437fe0f3b316

memory/1144-17-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1368-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/1144-19-0x0000000000340000-0x0000000000346000-memory.dmp

memory/1144-26-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1144-27-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 22:14

Reported

2024-06-10 22:17

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_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\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe"

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

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

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1032 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 emrlogistics.com udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 56.110.63.41.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 76.234.34.23.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.200.42:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 pki.goog udp
US 8.8.8.8:53 pki.goog udp
US 216.239.32.29:80 pki.goog tcp
US 8.8.8.8:53 42.200.250.142.in-addr.arpa udp
US 8.8.8.8:53 29.32.239.216.in-addr.arpa udp
US 52.86.6.113:443 emrlogistics.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 3.94.41.167:443 emrlogistics.com tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
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 8.8.8.8:53 84.65.42.20.in-addr.arpa udp

Files

memory/4552-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/4552-1-0x0000000000660000-0x0000000000666000-memory.dmp

memory/4552-2-0x0000000000660000-0x0000000000666000-memory.dmp

memory/4552-3-0x0000000000760000-0x0000000000766000-memory.dmp

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

MD5 e3961939866b0f0afb9ef6eee44f4577
SHA1 d36fa0cc909a13e946c7eaca8f98ec64ae4428ae
SHA256 4268f77ee4484f20f075d951e66ff87e1a47f87989565b6f98c40cc3623f802b
SHA512 457546c62bd2f0cff6d11032dd9674da3565536fa04f83f38800057707be0d40cc89561b47b32890f332e8424a24c422121c07a010da5244349e437fe0f3b316

memory/680-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/4552-25-0x0000000000500000-0x0000000000510000-memory.dmp

memory/680-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/680-27-0x0000000000500000-0x0000000000510000-memory.dmp