564ec27b098605799e1709f704445a3de00d07f730e990f994d6bff60654c25a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 04:12

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General

Target

2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe
Size

72KB
MD5

8c4c66463c750b901771db33e0bc53aa
SHA1

ee1cf8bc487767c70209e78ee1d181a35d577c8b
SHA256

564ec27b098605799e1709f704445a3de00d07f730e990f994d6bff60654c25a
SHA512

d42562c4d7e57c9c7791ee08234a4b8f1d8391a0d2d9ce5e3bef4fd9d71666397d5d13bea605dd7bcfc417342f0b0d8d8ca03a4a2ac884a6f5d46ec9adcbc5cb
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1svM:X6a+SOtEvwDpjBZYvQd28M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97c-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3012	asih.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 3568 wrote to memory of 3012	3568	2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe	89
PID 3568 wrote to memory of 3012	3568	2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe	89
PID 3568 wrote to memory of 3012	3568	2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_8c4c66463c750b901771db33e0bc53aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3012

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\asih.exe

Filesize
73KB

MD5
fd58e9d61812f870af2341baccd6807a

SHA1
d92567a5e4bc3efea6754b2a9674c832d615b418

SHA256
abfcc85e4655cdd7407bf3ea3a480792d63d81f2471eae2b2694efda7203a4ec

SHA512
a8b618a491b98948ac8de48e0210884ac1cb65009228288ba89fc7e1a9d91f5e9b2b2227a6f3d6325dfb9196282867159c97898fd84c9684b4ba76b17211ea6d

Download Submit
memory/3012-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/3012-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3568-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3568-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3568-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download