3060a7ef70fe4275c64a3c042e23119ac52d6bb8cfcab4cf16813cbccb94453a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 04:07

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General

Target

2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe
Size

41KB
MD5

7c703f6b4921ec2ad79decae117fd11d
SHA1

0919670bb3dad92e6cbabc4f973b379cbd2f46f3
SHA256

3060a7ef70fe4275c64a3c042e23119ac52d6bb8cfcab4cf16813cbccb94453a
SHA512

5c66c9d092dbd12e66b256f61ff265e76183d9e8a2e2fe7c513a7a31538b59e96743b497a7d342050db04209484bc99cd46199946d4de2a37ffe0a4499f0db35
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAHu:bCDOw9aMDooc+vAO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4308-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/4308-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2488-26-0x0000000008000000-0x000000000800A000-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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2488	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 4308 wrote to memory of 2488	4308	2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe	87
PID 4308 wrote to memory of 2488	4308	2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe	87
PID 4308 wrote to memory of 2488	4308	2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_7c703f6b4921ec2ad79decae117fd11d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2488

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
41KB

MD5
2530d39d3a58b1b42d0a4c449c28f974

SHA1
a18fd069a67542e7b9f153645622d8dabe0c9961

SHA256
7f6acd33befc24640b47651f90c6a3c4aefb15e0a48e87d9db6af40be55e6bf3

SHA512
5c2d4cc533de1f85488a877b22fc51fac80250e0295d595289ab4a7f6e67fc3acfd8c60e0da25c17fb40ddb93800a20683e3606d9c9be32a9a6deb5c79b5aec3

Download Submit
memory/2488-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2488-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2488-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4308-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4308-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4308-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4308-3-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4308-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download