Malware Analysis Report

2025-01-18 14:34

Sample ID 240613-edz3bstbrb
Target 2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker
SHA256 63b1b4cb66067ff8907e6e73b96bae07f42362cd9664763bfd044b734ef86b19
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

63b1b4cb66067ff8907e6e73b96bae07f42362cd9664763bfd044b734ef86b19

Threat Level: Known bad

The file 2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker was found to be: Known bad.

Malicious Activity Summary


Detection of CryptoLocker Variants

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-13 03:50

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: behavioral1

Detonation Overview

Submitted

2024-06-13 03:50

Reported

2024-06-13 03:52

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp

Files

memory/328-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

memory/328-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/328-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

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

MD5 50b69b352c17a849e7276b90ad4ede40
SHA1 153c1f4cc16750e56afdeb1563dbd84a82841dd9
SHA256 1e6c9f049e9bf57c70e2eb03fd19adfc5cec129a11a007d2d348c55c06ce4283
SHA512 7ede628045eaf4dcb0de1bf82c12fc8ee34e7d038abee04b7124fbfa775ab9315ac07c2dcf0c4cead89e4da20b27a56ecce4471a222e173c02b6449bf5b25b0e

memory/1816-23-0x0000000000370000-0x0000000000376000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 03:50

Reported

2024-06-13 03:52

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_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-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe"

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

"C:\Users\Admin\AppData\Local\Temp\rewok.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 --field-trial-handle=4136,i,3671441404766730751,12082497324212183132,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 spinistry.com udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 88.16.208.104.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp
US 8.8.8.8:53 3.242.123.52.in-addr.arpa udp
US 64.98.135.121:443 spinistry.com tcp

Files

memory/1016-0-0x0000000002250000-0x0000000002256000-memory.dmp

memory/1016-1-0x0000000000400000-0x0000000000406000-memory.dmp

memory/1016-8-0x0000000002250000-0x0000000002256000-memory.dmp

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

MD5 50b69b352c17a849e7276b90ad4ede40
SHA1 153c1f4cc16750e56afdeb1563dbd84a82841dd9
SHA256 1e6c9f049e9bf57c70e2eb03fd19adfc5cec129a11a007d2d348c55c06ce4283
SHA512 7ede628045eaf4dcb0de1bf82c12fc8ee34e7d038abee04b7124fbfa775ab9315ac07c2dcf0c4cead89e4da20b27a56ecce4471a222e173c02b6449bf5b25b0e

memory/2380-25-0x0000000002160000-0x0000000002166000-memory.dmp