4c9852bfa07008a544a8ae89cb58f4d92dd4a09d77efcc0f0fe4445053aa6c2f

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06-03-2024 02:24

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General

Target

2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe
Size

68KB
MD5

338e9a522c9fff9ba2f4accbb0a9d6bd
SHA1

b5a631c0b1bda54ef7530ea552b5afa021a3ce0b
SHA256

4c9852bfa07008a544a8ae89cb58f4d92dd4a09d77efcc0f0fe4445053aa6c2f
SHA512

fab799ad8f9fd95a2aba02fc144b8ea938b73355e0ea3b9e780612ab7a9e50ec2180b3daa95d701f05940e227f7d87e1466e30812527b92929a94764751e48f4
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/Rn:vj+jsMQMOtEvwDpj5HZYTjipvF24f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	misid.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 1336 wrote to memory of 2472	1336	2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe	87
PID 1336 wrote to memory of 2472	1336	2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe	87
PID 1336 wrote to memory of 2472	1336	2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_338e9a522c9fff9ba2f4accbb0a9d6bd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
68KB

MD5
25ea0aa7e6fe98baed7c4743defe312b

SHA1
293ad8fdd17eb8d3e9df03602facf28cfb913e34

SHA256
2daef6e1d1dc145d6eb20799558b2cbce870ee425f3747b8117b09739a01cb17

SHA512
0de69bb13a80e6d5c0a4837bcf6947e3ed30aa28d091b6ad4a789317522ed74ab4370dd9bf302d22de83409169848100e74d3d742ab6d78799eed6e900eb96b4

Download Submit
memory/1336-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1336-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1336-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2472-17-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/2472-21-0x0000000001F10000-0x0000000001F16000-memory.dmp

Filesize
24KB

Download