f57ed6b487813be3a2ec9d76a7db5b816b974eb6cccc2cb5754ee16b85248eb6

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

2580 hurok.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe

pid process

3028 2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious use of UnmapMainImage 2 IoCs

Processes:

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exehurok.exe

pid process

3028 2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
2580 hurok.exe

pid	process
2580	hurok.exe

pid	process
3028	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe

pid	process
3028	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe
2580	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe

description	pid	process	target process
PID 3028 wrote to memory of 2580	3028	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe
PID 3028 wrote to memory of 2580	3028	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe
PID 3028 wrote to memory of 2580	3028	2024-05-23_00fd91e57d2a2c3ca96906aab9348696_cryptolocker.exe	hurok.exe
PID 3028 wrote to memory of 2580	3028	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⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3028

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
53KB

MD5
98b2117af1632201e6ceb42453b77828

SHA1
069ba33dd0b3be5b06b702fe1c221d845c750b0d

SHA256
3a3222d9733284eccb9ae5dd60e192f9bef8e117bd45be2813a52ea55084f077

SHA512
93890a8bb175a3e6b973b366c35dd1c5ca8a72109afa1b389f068e4f795ec5d623962b436891e8f9f4f5225d8829d47c5a0b31754429809e1dfbbb631dd803a9

Download Submit
memory/2580-16-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3028-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3028-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download