3c635d99c50476e0071d86e667daca727dc9238682945f751e851882e149dbae

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04-06-2024 17:33

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General

Target

2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe
Size

66KB
MD5

71bad24e7971e13d6a3ecc5fa28eb864
SHA1

2638cc78db5381ed2be97087945300169ee81328
SHA256

3c635d99c50476e0071d86e667daca727dc9238682945f751e851882e149dbae
SHA512

6f157f1b0e8f24c2fe65d909f7b96237b15da615319fba694dab4bd261dcaa38f90b06bd21f266c81edd59d9d8c70ec20dd98cce97975e0066749e57018fd057
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299NR:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327d-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4784	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 2144 wrote to memory of 4784	2144	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	82
PID 2144 wrote to memory of 4784	2144	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	82
PID 2144 wrote to memory of 4784	2144	2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_71bad24e7971e13d6a3ecc5fa28eb864_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:4784

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
d9f1097a278924bec798e627adb0bd67

SHA1
46fd37941917567082b8fedab754db870717518b

SHA256
1acf021881f06866ebef72efa565c514bd1d06cc3ffb1823ece76b9901f9598e

SHA512
940a51f66209d847c018ccee92ddc3bd4c4e5ad3b91219b2c47fcea3ca1c40b47edfdb7c2932969c9fc2b0f08d394ddac72fc41d68c74c22b1d834f65da88fd5

Download Submit
memory/2144-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/2144-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2144-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4784-25-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download