cryptolocker | 800f1c7492fca5c04c332059f3fdb39970ce07e1cc5f5b9e8e2651492057587d

Analysis

max time kernel
150s
max time network
152s
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 20:59

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General

Target

2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe
Size

422KB
MD5

d370b7eb89b4b846814e2f401e6fd2da
SHA1

760fb2ffcbc2cad49311c41b36738077cf2a571b
SHA256

800f1c7492fca5c04c332059f3fdb39970ce07e1cc5f5b9e8e2651492057587d
SHA512

d9dfda95f316a1c6dd8aaa63481417cd99b552dde6bec061ee7b88b9f0eb9f2adcae3c098d7eb88a9b0c26db829d1ca2b84fc18c64ffdbc77fe104386b1f73b3
SSDEEP

6144:gWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC/mSAg:gWkEuCaNT85I2vCMX5l+ZRvim8

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

1632 {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

1632 {34184A33-0407-212E-3320-09040709E2C2}.exe
4592 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
1632	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
1632	{34184A33-0407-212E-3320-09040709E2C2}.exe
4592	{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-1-5-21-399997616-3400990511-967324271-1000\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_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 3232 wrote to memory of 1632	3232	2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 3232 wrote to memory of 1632	3232	2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 3232 wrote to memory of 1632	3232	2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1632 wrote to memory of 4592	1632	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1632 wrote to memory of 4592	1632	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1632 wrote to memory of 4592	1632	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3232

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_d370b7eb89b4b846814e2f401e6fd2da_cryptolocker.exe"
2⤵
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1632

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000020C
3⤵
- Executes dropped EXE
PID:4592

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

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Downloads

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Filesize
422KB

MD5
d370b7eb89b4b846814e2f401e6fd2da

SHA1
760fb2ffcbc2cad49311c41b36738077cf2a571b

SHA256
800f1c7492fca5c04c332059f3fdb39970ce07e1cc5f5b9e8e2651492057587d

SHA512
d9dfda95f316a1c6dd8aaa63481417cd99b552dde6bec061ee7b88b9f0eb9f2adcae3c098d7eb88a9b0c26db829d1ca2b84fc18c64ffdbc77fe104386b1f73b3

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