cryptolocker | 7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 16:52

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General

Target

2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe
Size

385KB
MD5

5dfd753473751da0685dbc79709a5087
SHA1

34eb0c24f08390fe7a9c3238cf4d02e45ec12719
SHA256

7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80
SHA512

a3a60af967ce5255d7fd2aef3a88422187a8949192c8ebcbc89ac44dceabb5afa0a00968f43cf4e648774cf26a7399ad090ef84c264acfb2f9e4724cc3edaccb
SSDEEP

6144:JWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCbZRY:JWkEuCaNT85I2vCMX5l+ZRvyZRY

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2828	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2828	{34184A33-0407-212E-3320-09040709E2C2}.exe
2748	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2108	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe
2828	{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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\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

description	pid	Process	procid_target
PID 2108 wrote to memory of 2828	2108	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	28
PID 2108 wrote to memory of 2828	2108	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	28
PID 2108 wrote to memory of 2828	2108	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	28
PID 2108 wrote to memory of 2828	2108	2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe	28
PID 2828 wrote to memory of 2748	2828	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2828 wrote to memory of 2748	2828	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2828 wrote to memory of 2748	2828	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2828 wrote to memory of 2748	2828	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_5dfd753473751da0685dbc79709a5087_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108
- 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_5dfd753473751da0685dbc79709a5087_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2828
- - 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:2748

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
385KB

MD5
5dfd753473751da0685dbc79709a5087

SHA1
34eb0c24f08390fe7a9c3238cf4d02e45ec12719

SHA256
7d87771c0bdc3feac638f692586a1317b8d6d9bb69ed28819154c43051dc7c80

SHA512
a3a60af967ce5255d7fd2aef3a88422187a8949192c8ebcbc89ac44dceabb5afa0a00968f43cf4e648774cf26a7399ad090ef84c264acfb2f9e4724cc3edaccb

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads