7b665a8a688f6901f111854f25e43734df423219614e13a11b8d943f6c3552a8

Analysis

max time kernel
149s
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
24/04/2024, 21:35

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General

Target

2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe
Size

85KB
MD5

de49eaf56b5c81abcfd5d196d89420ea
SHA1

6dd68d1d73dfabc1436368a2d1f60e95c478cbf3
SHA256

7b665a8a688f6901f111854f25e43734df423219614e13a11b8d943f6c3552a8
SHA512

243f284cb3678d00e92936b1f7622dc00e429dcb65b49033d298be11066d6b5bb0460c4ecb31b0012f28aea019abb47bb17157e13b2f64c75ecfa63045565bf5
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnYcL:V6QFElP6n+gMQMOtEvwDpjyaLccVNl64

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_set1

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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5076	asih.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 628 wrote to memory of 5076	628	2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe	84
PID 628 wrote to memory of 5076	628	2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe	84
PID 628 wrote to memory of 5076	628	2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_de49eaf56b5c81abcfd5d196d89420ea_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5076

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\asih.exe

Filesize
85KB

MD5
2b3de31edd70a5bff785ebb1e0f06a1e

SHA1
6fc0d9c96222cb24d5f137245d57b5805f6e22a0

SHA256
1eedf8b03c4e8245c32151d5e64d3d76e398cb9974608ee8f7496140e91fcd03

SHA512
c97e5f7c4a68d86e323ce2a1216b4f8ae1ea9921a2d6376f449156294deebe79659345a8d9f70eb6eaeb1f9d9cbda576f5506d4bcbc2ce54072acb16cd6b81ea

Download Submit
memory/628-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/628-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5076-17-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/5076-19-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download