Malware Analysis Report

2025-08-10 21:28

Sample ID 240527-w5zdjsee38
Target 2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker
SHA256 c68f89e4a44d59b21463bac470c09041680d109b9150437f05eabbe776f77079
Tags
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

c68f89e4a44d59b21463bac470c09041680d109b9150437f05eabbe776f77079

Threat Level: Known bad

The file 2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-27 18:30

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

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-27 18:30

Reported

2024-05-27 18:33

Platform

win7-20240220-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_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

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\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_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 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp
US 54.209.32.212:443 emrlogistics.com tcp
US 52.71.57.184:443 emrlogistics.com tcp

Files

memory/2860-0-0x0000000000500000-0x000000000050B000-memory.dmp

memory/2860-1-0x0000000000320000-0x0000000000326000-memory.dmp

memory/2860-2-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2860-9-0x0000000000320000-0x0000000000326000-memory.dmp

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

MD5 fb671ac634e05de92aa401a1b09b6709
SHA1 7108b8dd739206a63cceec4ef90b0907eb293bb9
SHA256 cc1e884fa5d291fb1a1b0370d2d00d72ac8606e045347684d35a1755a63215f2
SHA512 7965cd567a17324057fc26cf1b80532723e2b7fdb38ba2fbb091ab7ed8f318fd7c1d0837e6686bee895f760a8361f8ec044772a5de73cf6a287310fcee1354d3

memory/3024-16-0x0000000000500000-0x000000000050B000-memory.dmp

memory/2860-15-0x0000000000500000-0x000000000050B000-memory.dmp

memory/3024-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/3024-25-0x0000000000280000-0x0000000000286000-memory.dmp

memory/3024-26-0x0000000000500000-0x000000000050B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-27 18:30

Reported

2024-05-27 18:33

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

159s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5a9ffdd7833030d87b93749e751c3d2c_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 --field-trial-handle=4300,i,18168883380598738769,14202261231630113808,262144 --variations-seed-version --mojo-platform-channel-handle=4184 /prefetch:8

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 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 34.205.242.146:443 emrlogistics.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 54.161.222.85:443 emrlogistics.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 34.205.242.146:443 emrlogistics.com tcp
US 54.161.222.85:443 emrlogistics.com tcp
US 34.205.242.146:443 emrlogistics.com tcp

Files

memory/1060-0-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1060-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

memory/1060-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

memory/1060-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

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

MD5 fb671ac634e05de92aa401a1b09b6709
SHA1 7108b8dd739206a63cceec4ef90b0907eb293bb9
SHA256 cc1e884fa5d291fb1a1b0370d2d00d72ac8606e045347684d35a1755a63215f2
SHA512 7965cd567a17324057fc26cf1b80532723e2b7fdb38ba2fbb091ab7ed8f318fd7c1d0837e6686bee895f760a8361f8ec044772a5de73cf6a287310fcee1354d3

memory/3968-17-0x0000000000500000-0x000000000050B000-memory.dmp

memory/1060-18-0x0000000000500000-0x000000000050B000-memory.dmp

memory/3968-20-0x0000000000510000-0x0000000000516000-memory.dmp

memory/3968-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/3968-27-0x0000000000500000-0x000000000050B000-memory.dmp