baa2a73dcae258e3fb87367866d01ebdf781c9440fdf4bd90bb4e0c69fc60481

Analysis

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

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 04:39

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General

Target

2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe
Size

39KB
MD5

43f95456b6ba98b86b1821d62eda2708
SHA1

d39ba2d74f00110cc58258e7c4869e865eec5b1e
SHA256

baa2a73dcae258e3fb87367866d01ebdf781c9440fdf4bd90bb4e0c69fc60481
SHA512

e31da855ccbff6227d0edd3d7d5fddc7e663a6eeb70e322a48d0d0dad32c22c08e12f33016a814a734d346f5f4639b749785fb316c126322791d10281897f303
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmT3Hws:bA6YcA/X6G0W143Qs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1724	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 5072 wrote to memory of 1724	5072	2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe	85
PID 5072 wrote to memory of 1724	5072	2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe	85
PID 5072 wrote to memory of 1724	5072	2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_43f95456b6ba98b86b1821d62eda2708_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1724

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
39KB

MD5
211e377cd97cb592acc2df81c49d34b7

SHA1
038100a247e03c8d95761aaa3143bde68ea2a512

SHA256
f37d1642b0cb7ac9c2e9fe514b64001b9c422032549e7be472ec9517a8f7103a

SHA512
82d6a920a90f31231d2d6d47e75eeaa2506766d298d9a9cd6f7d1d4221cdee2c7abfb7ea50efe740f8446ab6e9fe3871bc8245fbbdd637bde124147eb5224405

Download Submit
memory/1724-17-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1724-18-0x0000000000780000-0x0000000000786000-memory.dmp

Filesize
24KB

Download
memory/5072-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5072-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5072-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download