882847badeb49de81c73a05a3e7d109687f12c2489bfd5ed0a63dd1fcb3d3936

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
20-06-2024 04:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe
Size

45KB
MD5

21d074945181470a5ca757347ebcf259
SHA1

0b24f6014145d766694db5417e832d786e99b3ec
SHA256

882847badeb49de81c73a05a3e7d109687f12c2489bfd5ed0a63dd1fcb3d3936
SHA512

d19341bdd92aeeb53d3ced6b09347f647700ac9d86ef8d0ef3d99398b4a9dde5764eb9f6fd0320a8a194d70e973f09cd70e3483b867769215f8ef4c18ab85a59
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUk3b+NJ:bm74zYcgT/EkM0ryfjd3WJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4684-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000022f42-13.dat	CryptoLocker_rule2
behavioral2/memory/2336-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4684-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2336-27-0x0000000008000000-0x000000000800D000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2336	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 4684 wrote to memory of 2336	4684	2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe	81
PID 4684 wrote to memory of 2336	4684	2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe	81
PID 4684 wrote to memory of 2336	4684	2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_21d074945181470a5ca757347ebcf259_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2336

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

Loading Replay Monitor...

Downloads

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

Filesize
45KB

MD5
9825156a3dd1163e898a03b2db7e3b02

SHA1
bcb77322a29fd45f661a52100a5a7986fb23eb78

SHA256
d7c300425ecb51ac8c954aebeb047b6d41889f4c1a19675cb57a8c42bfde055b

SHA512
30ed4f1b7324c47516591a61dfb118b9d4583c003f4b9fa2c6fb6632c537f8511db496befba19507ff9b2d5ac3f4169df0924306ac28682af77ffe49f4a4829e

Download Submit
memory/2336-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2336-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2336-26-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2336-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4684-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/4684-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4684-2-0x0000000002500000-0x0000000002506000-memory.dmp

Filesize
24KB

Download
memory/4684-9-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/4684-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download