ac912ee75ba81ac462da0e8e98b197027622a7349e4d7ff1e98effc3ae0a6b7b

Analysis

max time kernel
150s
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 02:29

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General

Target

2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe
Size

36KB
MD5

536e8f3632d339485ade8733fe226d73
SHA1

d35fec64cf966104de8fb5a31c3fc213e14d9f46
SHA256

ac912ee75ba81ac462da0e8e98b197027622a7349e4d7ff1e98effc3ae0a6b7b
SHA512

953944c158dbc605bcf16304d27101b7dcf59ce9fdc3063fd90591d16d668da3e4c38f01e317669b75641efa5a66f67cd54a9c557380c3bce78c06097a8460c4
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lx1h+:bA74zYcgT/Ekd0ryfjPIunqpeNswm6i

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	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

Processes:

2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

4204 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4204	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe

description	pid	process	target process
PID 4188 wrote to memory of 4204	4188	2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe	hasfj.exe
PID 4188 wrote to memory of 4204	4188	2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe	hasfj.exe
PID 4188 wrote to memory of 4204	4188	2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_536e8f3632d339485ade8733fe226d73_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4188

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:4204

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\hasfj.exe
Filesize
36KB

MD5
b59e16e60e1ab0da5cf0a94f4128fb39

SHA1
7f74ebe68d179e4a875ac91c81c17092efdf0371

SHA256
bd6a3edd6f9c2b5294ad36cc13e34336f4f9e6371fd83039bc4d4dea121bd182

SHA512
6228e66226385a5e889f4a3f05b6cb536f3f512ce57149202dc41acd2beece1beb72c399e97859aba942540d2c0d60d6856daa33d2048789469a7d7509daf814

Download Submit
memory/4188-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4188-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4188-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4204-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4204-23-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download