69007b4b37e566904f79d94cf46536490fa9dec937d34a446aa5818d91babaca

Analysis

max time kernel
148s
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
09-05-2024 11:52

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General

Target

2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe
Size

76KB
MD5

f37a2c81a877bf377a321f3240d7ed84
SHA1

d1b48ced20e68e0cad28907678ac960e1f7cbd14
SHA256

69007b4b37e566904f79d94cf46536490fa9dec937d34a446aa5818d91babaca
SHA512

424573baf5a85b41c82de6f7020c674dd0bf424859aa107e53bf8f8b300f074bf7d4cd959603d9f0a979b7982ad4a0be292b633b1917b9349c06d2513f32216a
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siC:X6a+SOtEvwDpjBZYvQd28

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023278-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023278-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	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 4820 wrote to memory of 2820	4820	2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe	82
PID 4820 wrote to memory of 2820	4820	2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe	82
PID 4820 wrote to memory of 2820	4820	2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_f37a2c81a877bf377a321f3240d7ed84_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2820

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
76KB

MD5
291ce9fa11696597b6e3b8b237043a3f

SHA1
146e97eec0e35ec0e0b1f597eaf205b40eb25bf0

SHA256
64835e5fe5d898ccf1cf29d733f125df5c2e95f0089cc04b9e8d2462bddcb1ef

SHA512
696e5524b60527717f1516e34b201a5f4c1587f6b25bc0de7ccaf593a3f6f01053ba7ab2c3e6ecdec219dcba75a06ab83e9218523ce95886112d11bb9dd6a96b

Download Submit
memory/2820-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2820-23-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4820-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/4820-1-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4820-8-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download