a8c99e6b9337a34ea9411bb522dc0cc5f77c8906d4cb1b8b5ec3652ff6e0b658

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22/05/2024, 06:17

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General

Target

2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe
Size

40KB
MD5

fa1b263b2ef64164e1d80f4427b9329d
SHA1

c83a526a4a458852eadb3d38db7fc2a537118200
SHA256

a8c99e6b9337a34ea9411bb522dc0cc5f77c8906d4cb1b8b5ec3652ff6e0b658
SHA512

a79a2097ceabd1470c5011d62d0b22c652601090b0069ffb9e5d655dde73b83db5243b04bc8e335501173cd6579f2488bd0f6119995bb93e1dbdf05ed82e1922
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmxT4Hmp:bA6YcA/X6G0W1BGp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233ee-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3664	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 384 wrote to memory of 3664	384	2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe	83
PID 384 wrote to memory of 3664	384	2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe	83
PID 384 wrote to memory of 3664	384	2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_fa1b263b2ef64164e1d80f4427b9329d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:384
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3664

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

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Downloads

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

Filesize
40KB

MD5
84434aafc0e6702f07d7d80c7d6bfa1a

SHA1
eed478ef69ccc98ff3ddc95436bc2e7e627513c8

SHA256
5cb4051952a21e8af87c6ab6bcc7bf05c9facebd030d5288d0c9112242433227

SHA512
9056fb71c716718222f0143f24fae361b60f268f0a6f04a7ae1c20ee291d0d93f9f69dc9c5b343921844ff3f71d372b8661dc79975a83910eec466f26af5f168

Download Submit
memory/384-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/384-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/384-8-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3664-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3664-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download