9ab0c9d967ed0d3addffd1b2f50b4ef13f94079349b456b78332ec9387259afd

Analysis

max time kernel
149s
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
23-05-2024 00:55

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General

Target

2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe
Size

53KB
MD5

d446af70b5751d00ff269f605e5420a7
SHA1

65dc828044ef457d87b12c6fa2b9684b520436d9
SHA256

9ab0c9d967ed0d3addffd1b2f50b4ef13f94079349b456b78332ec9387259afd
SHA512

906bdfd69325a7a754957def4faa8992227c82dbdbeaf696d6700465a401aeb7cd70fb80ebb1956f9f452064c4438da7400c4fb3393425b2e83a546d50f5fc19
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIKx6D:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

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_d446af70b5751d00ff269f605e5420a7_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_d446af70b5751d00ff269f605e5420a7_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

4124 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4124	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe

description	pid	process	target process
PID 4888 wrote to memory of 4124	4888	2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe	hurok.exe
PID 4888 wrote to memory of 4124	4888	2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe	hurok.exe
PID 4888 wrote to memory of 4124	4888	2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d446af70b5751d00ff269f605e5420a7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4888

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:4124

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
53KB

MD5
12e154d6130ec2c63cd88e8c7a20a48c

SHA1
c96c679f1456617272199b505e84ee15774a47f5

SHA256
05e583a8b2ea8e6d9598a8f74f0698b453b6de69d57ccf28cbed28cdc912c77f

SHA512
f072abadc760375f4400f9b4140d7c2c4735cbddb718854851c7e4319831cb491277b1f2374e6f25fbc054320e68251551108f6b89e94ae13e9ca9f6e02528c7

Download Submit
memory/4124-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4888-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4888-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4888-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download