9b755f38f0eb8603ed02e0d190e5291baaa4ca1ab086ca72bf3f1fcd9c3657c5

Analysis

max time kernel
0s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:27

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General

Target

2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe
Size

62KB
MD5

dc60f63ba607fef3a6806905ca8f0d4e
SHA1

9d09f39c1992060d2a2421e5fec874c70557a32e
SHA256

9b755f38f0eb8603ed02e0d190e5291baaa4ca1ab086ca72bf3f1fcd9c3657c5
SHA512

a968783ecd0c7cc7928d00c90d1553301e523519fcdd2f30531c34420f0145979084bf3efcd6c1e40088a7e8cbce6f6c936ec2cb97d6be5537afe1ecefc6ceb3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293W:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2248	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 2244 wrote to memory of 2248	2244	2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe	29
PID 2244 wrote to memory of 2248	2244	2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe	29
PID 2244 wrote to memory of 2248	2244	2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_dc60f63ba607fef3a6806905ca8f0d4e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  PID:2248

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
62KB

MD5
b405dfac036c60d6bc297f7a113e11ed

SHA1
8c27d321f4b068ed1ce74c08fae22f991156dae3

SHA256
128368e39c67137d3fbaf836ac1fdc6b115002dbc10001eb6b3b5b0df42602b8

SHA512
b7804c735b3e93eb035515933a4ff85dd727c4346db0ba9ca4808aaf09ad03d35fc8c381ad92e452ac557a84c3010e6284775224087ab94ea0df7c97b36e1e54

Download Submit
memory/2244-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/2244-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2244-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/2248-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download