75bd67eb7f498a435e5ec9702f85bea5b98c1c14f4f7d9c8ee4e1b310c92c7ca

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
08-05-2024 15:23

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General

Target

2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe
Size

52KB
MD5

42673a63fb8b56d4c8d7d2e7edf537cc
SHA1

161fffd51f3f011b9e00990a87f094941a9d0af5
SHA256

75bd67eb7f498a435e5ec9702f85bea5b98c1c14f4f7d9c8ee4e1b310c92c7ca
SHA512

6490dc2a5d102fc428f6b9fc808af968611c53e06dfd58e0d5f485ca1e3d793ed45322f897727192bf98c02326c7f7f1c9ba38d06a652053ec446ee62ee11331
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKxk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7w

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233fd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233fd-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	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 4740 wrote to memory of 2252	4740	2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe	77
PID 4740 wrote to memory of 2252	4740	2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe	77
PID 4740 wrote to memory of 2252	4740	2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe	77

C:\Users\Admin\AppData\Local\Temp\2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_42673a63fb8b56d4c8d7d2e7edf537cc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4740
- 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:2252

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
52KB

MD5
d9c612bc32f864e203f37b3f8c5a50c0

SHA1
81c32d8894ace0ac17eea30c48360b959ccc2f66

SHA256
da7739128ba4950fa0589954f831d70d874ee6afed059d7997deb18882038ceb

SHA512
7de2ccf2c09d70f4df91c491bbdc437cfb6e1a51c95553fd3e4c9b0a9d8a72bb8a84132052f8dc1761d795a9205afb2693431acd5d6b123e0b187ba24310bce1

Download Submit
memory/2252-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4740-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4740-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4740-8-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download