b0451da6fe0ea8d2dd931e203b9cabbc5cecdeddc7562c67803cb16bfc653158

Analysis

max time kernel
89s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 03:27

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General

Target

2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
Size

48KB
MD5

3bfd8b21a50c467c67784cbe9fae448b
SHA1

7e1461d78fa167d5276bf7d64ed4fe6de8d002aa
SHA256

b0451da6fe0ea8d2dd931e203b9cabbc5cecdeddc7562c67803cb16bfc653158
SHA512

fdfb85e7c9c414c0e83125ad6b8b6edc3b65010e3ffe1aa54738808b549f161631a73c4387a025a705b8852698b2c2d55e2142a3f7446a2fae5a032d2d4524f3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAID:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000230f9-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000230f9-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	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 1432 wrote to memory of 3076	1432	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	87
PID 1432 wrote to memory of 3076	1432	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	87
PID 1432 wrote to memory of 3076	1432	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1432
- 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:3076

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
48KB

MD5
da3faf22af078f6865341bab8bd4f166

SHA1
b935ad0cfbde907d94480c7c5b39f172ca58915a

SHA256
97f2c339f90cf344d73cfb544283db73917903abce93eee0ce0a0f92524bd019

SHA512
42ecebcc358955641328dc4866b84d9f33ecfc0e9b40435dd9c4e76fb554abf99ad26551f0777c8dad8aef8b56cd3a422eacba5ed359e749930230bc8e6d0075

Download Submit
memory/1432-0-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1432-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/1432-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3076-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download