70bb9faea93f27366deed89be5aed194a0168e5863c784f0e221e8f73211eae2

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:22

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General

Target

2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe
Size

41KB
MD5

073201000b3d45a8de986cd57b8992d8
SHA1

d647e350e61c467959f0de71e80415d2e6ce674a
SHA256

70bb9faea93f27366deed89be5aed194a0168e5863c784f0e221e8f73211eae2
SHA512

bab2de62d5759e1f86afe0eeb3d79baa381308929392648249de782a4d24dd3ee2bac39ea433076af0418e2ae12f197d57b9d61214a29d2434a1dd8fd284c15e
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9OrC:X6QFElP6n+gJQMOtEvwDpjBsYK6r0rC

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:

2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4152 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4152	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe

description	pid	process	target process
PID 2272 wrote to memory of 4152	2272	2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe	asih.exe
PID 2272 wrote to memory of 4152	2272	2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe	asih.exe
PID 2272 wrote to memory of 4152	2272	2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_073201000b3d45a8de986cd57b8992d8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2272

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4152

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\asih.exe
Filesize
41KB

MD5
2141e4627b35f10681160f8ea737b4fa

SHA1
dc48596f5d66860f396689a13a10766d2a2c2746

SHA256
12bc78cd4a401b24141bc571ded1cb612987b20459af565c265bd468790a53c8

SHA512
d557c31ff6849c65a99df47f216103c3742b2dc65a883df2c8def99a4e2d78ba78f53abd1475d04f85d644dea8257fc669d9da13fc572295eed556519bbac502

Download Submit
memory/2272-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2272-1-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/2272-8-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4152-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4152-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download