f57ed6b487813be3a2ec9d76a7db5b816b974eb6cccc2cb5754ee16b85248eb6

Analysis

max time kernel
129s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 00:24

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General

Target

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
Size

53KB
MD5

00fd91e57d2a2c3ca96906aab9348696
SHA1

0cee379288beea8950f978fb2ee2670abd98c7cb
SHA256

f57ed6b487813be3a2ec9d76a7db5b816b974eb6cccc2cb5754ee16b85248eb6
SHA512

2aa562539a4b4e5d2df4a5784047250dcc801f2ac1ba3330afd86b77309e4247b9dc993594dcbf72c165e07f5d51a083b0e4716a9b1eed73ea2bfdc0db4bceec
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKx6s:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7X

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	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

Processes:

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

756 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
756	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe

description	pid	process	target process
PID 1708 wrote to memory of 756	1708	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe
PID 1708 wrote to memory of 756	1708	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe
PID 1708 wrote to memory of 756	1708	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1708

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:756

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
53KB

MD5
98b2117af1632201e6ceb42453b77828

SHA1
069ba33dd0b3be5b06b702fe1c221d845c750b0d

SHA256
3a3222d9733284eccb9ae5dd60e192f9bef8e117bd45be2813a52ea55084f077

SHA512
93890a8bb175a3e6b973b366c35dd1c5ca8a72109afa1b389f068e4f795ec5d623962b436891e8f9f4f5225d8829d47c5a0b31754429809e1dfbbb631dd803a9

Download Submit
memory/756-25-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1708-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1708-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1708-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1708-17-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download