Malware Analysis Report

2025-06-16 07:34

Sample ID 240601-ytm79aec85
Target 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker
SHA256 2dbd3499a95db5520d651f827c94496c89382759cf910c69ec27cc320710d391
Tags
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

2dbd3499a95db5520d651f827c94496c89382759cf910c69ec27cc320710d391

Threat Level: Known bad

The file 2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 20:04

Signatures

Detection of CryptoLocker Variants

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

2024-06-01 20:04

Reported

2024-06-01 20:07

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\gewos.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\gewos.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 nasap.net udp
US 35.212.119.5:443 nasap.net tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 5.119.212.35.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 226.21.18.104.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 8.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3216-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/3216-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

memory/3216-1-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 c3764873bd8a61ddfac7b2567dc805a9
SHA1 223ef2d4277a9c572c5e09da0f91bd8182e9f755
SHA256 261ed4c7e64d90816e079122e2e8e891cb75fc513da9c226e94d0f171779c9eb
SHA512 616b0a624773a94d1019783ea4d4046c4473d2188792829c889d308b1e195823b02937c639eb570078f69ddd04c5a9ca73a5723ce0886cd0ad30d43fcf2b4ca4

memory/5076-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

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

MD5 562001dc7e0704b16170f68bed259c02
SHA1 0e98c6e294c299608d650314640ef8efe0c9f212
SHA256 4ebbb50c4055d9838d2c43058bbb0cff8ebd7eed465cefe4b9e2a639424759bc
SHA512 48c2aa64eb8f0805497bff4b7dffe34546a62cdb691329cc6e3c69bf6169e46c80405d0918776c755923a007f1e5224290788672de972fe567414c730252760a

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 20:04

Reported

2024-06-01 20:07

Platform

win7-20240221-en

Max time kernel

122s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
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\gewos.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-01_6ca26d69ffe24566a19c28869500b828_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 nasap.net udp
US 35.212.119.5:443 nasap.net tcp

Files

memory/2740-0-0x0000000000260000-0x0000000000266000-memory.dmp

memory/2740-8-0x0000000000260000-0x0000000000266000-memory.dmp

memory/2740-1-0x0000000000400000-0x0000000000406000-memory.dmp

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

MD5 c3764873bd8a61ddfac7b2567dc805a9
SHA1 223ef2d4277a9c572c5e09da0f91bd8182e9f755
SHA256 261ed4c7e64d90816e079122e2e8e891cb75fc513da9c226e94d0f171779c9eb
SHA512 616b0a624773a94d1019783ea4d4046c4473d2188792829c889d308b1e195823b02937c639eb570078f69ddd04c5a9ca73a5723ce0886cd0ad30d43fcf2b4ca4

memory/2116-23-0x0000000000350000-0x0000000000356000-memory.dmp