cryptolocker | 525d562263b48390c5cafba03864679b116fb706a167ce4a58e5d60a5f8578ef

Analysis

max time kernel
150s
max time network
151s
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 17:33

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General

Target

2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe
Size

361KB
MD5

e58185dfcfc4f42ce7380c34c0642129
SHA1

9c4420482a202b77d1c984618e3ddb0ef697ac2b
SHA256

525d562263b48390c5cafba03864679b116fb706a167ce4a58e5d60a5f8578ef
SHA512

3981f1546f255a4f56388907864705e324ca0098f2527f3986a254097ef7595fe387a9ccb3d243c122128d0ca72dd02fb02fd3a8b2b17614c341ab5ad49e713c
SSDEEP

6144:UWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCDniPf:UWkEuCaNT85I2vCMX5l+ZRvaiH

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

4580 {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

4580 {34184A33-0407-212E-3320-09040709E2C2}.exe
2728 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
4580	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
4580	{34184A33-0407-212E-3320-09040709E2C2}.exe
2728	{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-1-5-21-983155329-280873152-1838004294-1000\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_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 312 wrote to memory of 4580	312	2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 312 wrote to memory of 4580	312	2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 312 wrote to memory of 4580	312	2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 4580 wrote to memory of 2728	4580	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 4580 wrote to memory of 2728	4580	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 4580 wrote to memory of 2728	4580	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:312
- 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_e58185dfcfc4f42ce7380c34c0642129_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4580
- - 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:2728

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

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

Filesize
361KB

MD5
e58185dfcfc4f42ce7380c34c0642129

SHA1
9c4420482a202b77d1c984618e3ddb0ef697ac2b

SHA256
525d562263b48390c5cafba03864679b116fb706a167ce4a58e5d60a5f8578ef

SHA512
3981f1546f255a4f56388907864705e324ca0098f2527f3986a254097ef7595fe387a9ccb3d243c122128d0ca72dd02fb02fd3a8b2b17614c341ab5ad49e713c

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