4fdc305b4a76b126f1b0d32cbf907fee5973d526050f5566c40093a3d3d42687

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 04:24

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General

Target

2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
Size

54KB
MD5

c9785158b5686dd7db6c5f5f07d41978
SHA1

34d3b3997eaac6ea87ee22f10e8cb33766c764f2
SHA256

4fdc305b4a76b126f1b0d32cbf907fee5973d526050f5566c40093a3d3d42687
SHA512

0707bff0f5b6d62bafd0eec3d69b884c3a75404f862ae1ec67c69a57ac92ae696a2398b2c89b33a7ccb8464e58aabf69008e70a97b48d6dffd033add437c2a2f
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6Ei:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4284	hurok.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 2796 wrote to memory of 4284	2796	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	83
PID 2796 wrote to memory of 4284	2796	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	83
PID 2796 wrote to memory of 4284	2796	2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_c9785158b5686dd7db6c5f5f07d41978_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4284

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\hurok.exe

Filesize
55KB

MD5
c3de96c606fc6de53a49bcaaf24f50b5

SHA1
124adf55963d3282bd2fde404f419c345013d0b7

SHA256
0fbd638a7670c754a46be1695ce81aed7cd6ecbfb3f2502c7408b4389ead6591

SHA512
82df3bbe8ec3db8599980b9f7730a279f680b04b2153757bcdea97a4f49e20a8b44f3a0f72dd2e08a8de164ed771ae419f3a6937d3dc8511f836c696921f4c44

Download Submit
memory/2796-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2796-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2796-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4284-25-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download