cryptolocker | 6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

Analysis

max time kernel
151s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02-03-2024 21:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe
Size

404KB
MD5

e256554751f567643b949445307bbbd4
SHA1

a3ec05323d9c7ed51868615f46449818dd69201c
SHA256

6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9
SHA512

a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e
SSDEEP

6144:HWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCGJdZ3:HWkEuCaNT85I2vCMX5l+ZRvJdZ3

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Deletes itself 1 IoCs

Processes:

{34184A33-0407-212E-3320-09040709E2C2}.exe

pid process

956 {34184A33-0407-212E-3320-09040709E2C2}.exe
Executes dropped EXE 2 IoCs

Processes:

{34184A33-0407-212E-3320-09040709E2C2}.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

pid process

956 {34184A33-0407-212E-3320-09040709E2C2}.exe
2868 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
956	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
956	{34184A33-0407-212E-3320-09040709E2C2}.exe
2868	{34184A33-0407-212E-3320-09040709E2C2}.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

{34184A33-0407-212E-3320-09040709E2C2}.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 3816 wrote to memory of 956	3816	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 3816 wrote to memory of 956	3816	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 3816 wrote to memory of 956	3816	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 956 wrote to memory of 2868	956	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 956 wrote to memory of 2868	956	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 956 wrote to memory of 2868	956	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3816

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe"
2⤵
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:956

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C
3⤵
- Executes dropped EXE
PID:2868

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Filesize
404KB

MD5
e256554751f567643b949445307bbbd4

SHA1
a3ec05323d9c7ed51868615f46449818dd69201c

SHA256
6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

SHA512
a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e

Download Submit