6cb9e5de11af59438cdfae64b79fb5ab5bbfd4d95916f931bc4fa92e04edf4f2

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 15:30

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General

Target

2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe
Size

41KB
MD5

6f9f15387c0e6f54c9ab3364bf8874a6
SHA1

9b3cd7d3536f7bb7d8bc4fb5d01f88478d916a08
SHA256

6cb9e5de11af59438cdfae64b79fb5ab5bbfd4d95916f931bc4fa92e04edf4f2
SHA512

ac50f54f0eec0fa740c7e0b37482aa365bf6cb7e7879ab76ea7302498ba5cdc52f631ae8a3aa513efa1c514c466c131ca205882d7e47781be41cf6045996dd54
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAA:bCDOw9aMDooc+vAA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2560-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/3432-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2560-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3432-27-0x0000000008000000-0x000000000800A000-memory.dmp	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	2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3432	lossy.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 2560 wrote to memory of 3432	2560	2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe	82
PID 2560 wrote to memory of 3432	2560	2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe	82
PID 2560 wrote to memory of 3432	2560	2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_6f9f15387c0e6f54c9ab3364bf8874a6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2560
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3432

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\lossy.exe

Filesize
42KB

MD5
7239321ccf60e0d86eb2f1fc557fdf68

SHA1
9c8be827c366d71409548c99e31b95fa0b5f1e50

SHA256
472a3856bb2e48cca9ec1fca098028533d57656682cac5008e7e4e5b74ce0825

SHA512
2654edd14567e5551f5f01d140a20c66db1468a01bd39c07d80c0aff78057ca072ef5e0c1910dcebd8cf7b8b79be04052a3c9165f1f8f4feb8cb367440fc8061

Download Submit
memory/2560-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2560-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2560-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2560-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2560-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3432-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3432-26-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/3432-20-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3432-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download