677c560492536626650b8c2dd9dbb72d4cff1ee6dfe43f673fc1c6424d8c85da

Analysis

max time kernel
149s
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
08/06/2024, 00:49

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General

Target

2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe
Size

55KB
MD5

4ae636c761d5c7f279ba6421c0da37d4
SHA1

cc094e7ccb3028a38e2c4faa014c262adb65c9b6
SHA256

677c560492536626650b8c2dd9dbb72d4cff1ee6dfe43f673fc1c6424d8c85da
SHA512

dffb55563eeee2772d5cc2589ec431a4a58e3e734a98e46b0b358cb47efd16b632f8e643d52b516010d101a3ee5991e9de7372123f9a128f87190902f0ecfbba
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6E7:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7O

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	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_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
5020	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 1076 wrote to memory of 5020	1076	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	81
PID 1076 wrote to memory of 5020	1076	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	81
PID 1076 wrote to memory of 5020	1076	2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-08_4ae636c761d5c7f279ba6421c0da37d4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1076
- 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:5020

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
96b06633d8ab10048093f8f25e3db040

SHA1
1f3c06b42da3a464a7c275bc73fa66638cc78ec3

SHA256
a1fe04e7174e926d4935d149ff1774906b37afb09fba8813b590b86737f6fc9a

SHA512
84ed9c5151edc594e87383eeab961fd87654c83c1d9b2d86405eac54cd1f0a2c593c161b20c9b1f18f0227c8009dd722b1039f21667653d44e015f62d16db766

Download Submit
memory/1076-0-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/1076-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1076-8-0x0000000002130000-0x0000000002136000-memory.dmp

Filesize
24KB

Download
memory/5020-25-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download