64948b020635cc0d74463211f01508f03f554d35edab6e1556ff3b0f8b29c376

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
25/04/2024, 03:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe
Size

95KB
MD5

1e95ccb39ff6880cb3def2437f6cb3fc
SHA1

0daa6e20711c21e1a897de25724d4f10acc2986c
SHA256

64948b020635cc0d74463211f01508f03f554d35edab6e1556ff3b0f8b29c376
SHA512

6591f8c30cc17333a08c39386be3d716dc0d8ce12f2fb6376b54085e4ef4f1b2a3609b6fee2a1af58d66e676d52682cccc86fd7280e20e6e9a1739785809d876
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMg2:V6a+pOtEvwDpjtzy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3976	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 3480 wrote to memory of 3976	3480	2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe	86
PID 3480 wrote to memory of 3976	3480	2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe	86
PID 3480 wrote to memory of 3976	3480	2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_1e95ccb39ff6880cb3def2437f6cb3fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3976

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

Loading Replay Monitor...

Downloads

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

Filesize
95KB

MD5
a749094ae9014df0e703895dab551c5c

SHA1
a8db2f7358ff6739d32415d75ec32b628ea9ab4f

SHA256
97ac09b88ff98e79eeb9aa9fccdc21cf64401188bb6dd3f2c01118cfb7dc380d

SHA512
7d6575ce8aeb3920a0dad7f45a0ae4d158a3b35e83ee2788b7c69ca898024e1fb17d4592b50d2e977ec5566dabeeb3dc373d0f9d5d8a9f9919ef30ed8ffa3af6

Download Submit
memory/3480-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3480-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3480-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/3976-17-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3976-19-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download