5bf976c6f26c319f0b6420c6da8c3daaf749e42c62bc55dd5fb788932130ad72

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
11-06-2024 03:39

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General

Target

2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe
Size

66KB
MD5

a29cc8c9f4ecc6fce5946fbceec53969
SHA1

ba83c117c9887c7838c64ecc17ebf957c65d8e74
SHA256

5bf976c6f26c319f0b6420c6da8c3daaf749e42c62bc55dd5fb788932130ad72
SHA512

6632f6b59263cb7981e1434ca34998f4aca0e0e9474f4384214bac73cca36795e0ad7018dd5a4aa7cfad2406fa9d0a028dbce9a006bcf886d5cc30edc494bf99
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299847u:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002326e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002326e-12.dat	CryptoLocker_set1

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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4256	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 3980 wrote to memory of 4256	3980	2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe	81
PID 3980 wrote to memory of 4256	3980	2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe	81
PID 3980 wrote to memory of 4256	3980	2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a29cc8c9f4ecc6fce5946fbceec53969_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:4256

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
66KB

MD5
87ee9724e5473b047783ad2ab6473b26

SHA1
3fa67d99a5abcc38b5439153c285bb435f054916

SHA256
b35ca138b78cd5978c40a9b9eaaf435cbf3b3773e247c5427f188b4721653aa4

SHA512
d19c91a616a7ebab3f59ec658d201d186010ef73e2e80cd790f7565d066264e44fd148801e42f939d45e57e5a4bc37437c402539901f35e1cbd47ddc2cada0c3

Download Submit
memory/3980-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3980-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3980-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4256-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download