23942855314a0ece58620e544a0c28941b61fb83b246d9ae45cce72221dceeba

Analysis

max time kernel
101s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-03-2024 16:30

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General

Target

2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe
Size

48KB
MD5

2a2f6cf8b1312006ba1744296f2e0398
SHA1

1fd6ac87bfa989de8e1009da7d18f577bccf9665
SHA256

23942855314a0ece58620e544a0c28941b61fb83b246d9ae45cce72221dceeba
SHA512

990a50b7048e62e23c5a3576e742902dc24978d9014f5b966ec723bf4bdb032aa4f8888f4a9fec16b84d430a48ef9152dbe63322edd25c7337c922a4123919d0
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hQcEp7B1:bgGYcA/53GAA6y37nbQb1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002316a-12.dat	CryptoLocker_rule2

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4912	hasfj.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 4088 wrote to memory of 4912	4088	2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe	84
PID 4088 wrote to memory of 4912	4088	2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe	84
PID 4088 wrote to memory of 4912	4088	2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_2a2f6cf8b1312006ba1744296f2e0398_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4912

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\hasfj.exe

Filesize
49KB

MD5
56477b4f079969bc508d5ebebfded1e3

SHA1
1b95fec7a136bd222101427d4de4703ef8947de1

SHA256
8db36fc96d178a9a113ea498800bfe060352e0a59b89cbb5e7e80fa790ed2fda

SHA512
1a6396b8b84adb4998b037a28f74f8b501f723b1cbc096121a204887cf8e889d7f860aba0164e8be31473b98cc599575138f0c99b71b65efcdd85db0dc1b5bfd

Download Submit
memory/4088-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4088-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4088-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4912-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4912-23-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download