cryptolocker | cdad190f06ceb7a0c815839ef4fe0f3eb5bd321029c26f3b383df40e372020ec

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 17:34

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General

Target

2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe
Size

395KB
MD5

e63cee3c43ab030204a2dc8ca8eea364
SHA1

0f828cbc2da95c5e9592e5cf2a376fbb99cd0743
SHA256

cdad190f06ceb7a0c815839ef4fe0f3eb5bd321029c26f3b383df40e372020ec
SHA512

503026f8083838b6c806795f66d0d8633071013f3ca14ca44dc9fbc081da7700c5915b8ac59561362a0f0ce55a9720ece764312138fcd10985de3839465c8aed
SSDEEP

6144:VWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC2slIQ3a+:VWkEuCaNT85I2vCMX5l+ZRvXsKQ3a+

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

2684 {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

2684 {34184A33-0407-212E-3320-09040709E2C2}.exe
1072 {34184A33-0407-212E-3320-09040709E2C2}.exe
Loads dropped DLL 2 IoCs

Processes:

2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

pid process

2256 2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe
2684 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
2684	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
2684	{34184A33-0407-212E-3320-09040709E2C2}.exe
1072	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
2256	2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe
2684	{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-1-5-21-330940541-141609230-1670313778-1000\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 8 IoCs

Processes:

2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 2256 wrote to memory of 2684	2256	2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2256 wrote to memory of 2684	2256	2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2256 wrote to memory of 2684	2256	2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2256 wrote to memory of 2684	2256	2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2684 wrote to memory of 1072	2684	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2684 wrote to memory of 1072	2684	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2684 wrote to memory of 1072	2684	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2684 wrote to memory of 1072	2684	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2256

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_e63cee3c43ab030204a2dc8ca8eea364_cryptolocker.exe"
2⤵
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2684

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C8
3⤵
- Executes dropped EXE
PID:1072

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Filesize
395KB

MD5
e63cee3c43ab030204a2dc8ca8eea364

SHA1
0f828cbc2da95c5e9592e5cf2a376fbb99cd0743

SHA256
cdad190f06ceb7a0c815839ef4fe0f3eb5bd321029c26f3b383df40e372020ec

SHA512
503026f8083838b6c806795f66d0d8633071013f3ca14ca44dc9fbc081da7700c5915b8ac59561362a0f0ce55a9720ece764312138fcd10985de3839465c8aed

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