1c1db473e7e00b33694f60b89692593991b66ecb4e32e98ac2f232b29bb7971e

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 18:25

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General

Target

2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe
Size

70KB
MD5

18b972b0d4dc65f645ec2446587a948c
SHA1

5764f76ebc27dbf5309bb33d397f41c5d5b1928e
SHA256

1c1db473e7e00b33694f60b89692593991b66ecb4e32e98ac2f232b29bb7971e
SHA512

e0c307929fd5d26c31a7e1c27151f62906414052c0ced52ebbe3724423e80bfbc874291927bc03855efc9aa6a3f529590b969cbfdcd93f467563ad333133f92b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1br:X6a+SOtEvwDpjBZYvQd2X

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002320d-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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4972	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 1592 wrote to memory of 4972	1592	2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe	87
PID 1592 wrote to memory of 4972	1592	2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe	87
PID 1592 wrote to memory of 4972	1592	2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_18b972b0d4dc65f645ec2446587a948c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1592
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4972

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
70KB

MD5
d33a38ebcedbf849759d52bf75af3296

SHA1
6bf3f8e5d2716970ffbb6827b405f5b1ed31c86f

SHA256
390fd965a2c03eceb9dfcf1e436f0dbf905a69407d0a64f23d87f9067b2e3e64

SHA512
cedd7aae5258d699db6b6e9686e1bfa1a3ec590531b931b52308f65008e71b84760080ab600d3d8add0bd4603f484c6b25f25393fd364865055fcd134e9716a1

Download Submit
memory/1592-0-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1592-1-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/1592-2-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4972-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4972-22-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download