f87150e9650d2078fdab0951fb28859efa27f0d2c0e3e6355566256ec7486893

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 18:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe
Size

37KB
MD5

3c17ba849f3af5f638c09edcc19b4603
SHA1

df20e0afe67eba557fb62ffbb20579956bb40bef
SHA256

f87150e9650d2078fdab0951fb28859efa27f0d2c0e3e6355566256ec7486893
SHA512

f3dd00bd8450c11dd31738e6676ae777b30513fadae4dbda149d4634f90c5b5642719880af43bfaf1287df943e89969ddc4e2e97d9b8a5a69b0ca0aa29b06219
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mrw:bc/y2lLRU6zA6qM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\rewok.exe	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

rewok.exe

pid process

3848 rewok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3848	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe

description	pid	process	target process
PID 644 wrote to memory of 3848	644	2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe	rewok.exe
PID 644 wrote to memory of 3848	644	2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe	rewok.exe
PID 644 wrote to memory of 3848	644	2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe	rewok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_3c17ba849f3af5f638c09edcc19b4603_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:644

C:\Users\Admin\AppData\Local\Temp\rewok.exe
"C:\Users\Admin\AppData\Local\Temp\rewok.exe"
2⤵
- Executes dropped EXE
PID:3848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe
Filesize
37KB

MD5
8860e25653b1983d8a4bcb5db861a469

SHA1
9d70663a70f3b64d071e4f3a1ef720936ff2eb0e

SHA256
b2da3990140f7d8dd49daedba8caefa9d73ee3cad6476f0f6a4aca44f822bac9

SHA512
c83aad5b3f318541893bd61ccef403cfbe6cc54f8df10b45c5b2246db40028da796a8ad1ebd42f2aac8c5a2dc9007c858890ac0de92f8645078fef20b98c9dbe

Download Submit
memory/644-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/644-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/644-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3848-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download