8b54d8cdbd12a02426b12a54a5e3d0bb92419d2ce8fc169d6e433caaddccefea

Analysis

max time kernel
151s
max time network
155s
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 20:07

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General

Target

2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe
Size

47KB
MD5

9126de82811b2e7df634cd8fd2fda513
SHA1

7c9e4b469678240de50c4a03ba5e92b43231c025
SHA256

8b54d8cdbd12a02426b12a54a5e3d0bb92419d2ce8fc169d6e433caaddccefea
SHA512

3aa15f17c4372d476604b060b2802d516d0d7b7686645b08700a515c8f0ec1d87be76db8f65826ad7931ceb5eb50feef903013a673bab7aff8694e5d86e32162
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIDKZ:bgGYcA/53GAA6y37Q6dIm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

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_9126de82811b2e7df634cd8fd2fda513_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_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

3716 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3716	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe

description	pid	process	target process
PID 4148 wrote to memory of 3716	4148	2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe	hasfj.exe
PID 4148 wrote to memory of 3716	4148	2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe	hasfj.exe
PID 4148 wrote to memory of 3716	4148	2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_9126de82811b2e7df634cd8fd2fda513_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4148

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:3716

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\hasfj.exe

Filesize
47KB

MD5
90887b296a4357c1d4f049e6d6a5f9ee

SHA1
4d302673d1397520d5fd357b996d7d91c780e68d

SHA256
cd56a9cea4c7396c09d235b4b6b541464a4ad9c8a98ff47e44429b595576abed

SHA512
28b142d8945bc4254fe1998576ec980582ffd37c203d5a061066fa5f03df921871f231455af3f594d521e3b9103fb54a2e7204f4b189e9802caabe5697a10123

Download Submit
memory/3716-18-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3716-17-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4148-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4148-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4148-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download