d30df85761a801cb765852837551e585e7e8b9365ba60113d5bb7643e0697a14

Analysis

max time kernel
137s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:40

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General

Target

2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe
Size

51KB
MD5

7997c80077d64b9bb2ea6c588addf632
SHA1

09db4addbc4f6e4cf683f5cd2955c125307193ee
SHA256

d30df85761a801cb765852837551e585e7e8b9365ba60113d5bb7643e0697a14
SHA512

dce31b51b409323f42d6958f07a08cb3fe5dcf999b77713b4c913bfe4ba965362935aebc1df397474553b84c96ce0ce27827c590c4d0d83a38e9850254aeb935
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklx:V6a+pOtEvwDpjq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Processes:

2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3244 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3244	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe

description	pid	process	target process
PID 4528 wrote to memory of 3244	4528	2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe	asih.exe
PID 4528 wrote to memory of 3244	4528	2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe	asih.exe
PID 4528 wrote to memory of 3244	4528	2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_7997c80077d64b9bb2ea6c588addf632_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4528

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3244

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
52KB

MD5
815d72186efcb44af41aca29079836dc

SHA1
13763f9460c5d211e5d39936c2a0f73321e2af94

SHA256
197eaeaa1ac0bd345b5c1c3482871d9a914e56cdb86e08dd2fab8d6f135f8e29

SHA512
86668ab5a17da9a89824efe563a7b325f1fae9c254ab70d16ea56422c97e06c345f88719ed978001508b5acdea6236c4ace200f2c733349ee7f70e709a823385

Download Submit
memory/3244-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3244-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4528-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4528-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4528-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download