cryptolocker | 98f1fba0f2d439f905d61a40283fc101f5307bcf3110895a876ed80844f5456d

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 16:50

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General

Target

2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe
Size

385KB
MD5

535139f45738f1165bc61f294e14f64c
SHA1

9a134aaa90a829a189badff227a80b890b14f960
SHA256

98f1fba0f2d439f905d61a40283fc101f5307bcf3110895a876ed80844f5456d
SHA512

7b175bca8b160229a143bf6fc1e57edc93bc6fcc3849e1dedd7ce1e96653336ad2bb09ba2e94da9eb0cfa2df123a70e142778c7b0e668c8706f61cc4e47ab773
SSDEEP

6144:JWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC9nuF:JWkEuCaNT85I2vCMX5l+ZRv0nuF

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2628	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2628	{34184A33-0407-212E-3320-09040709E2C2}.exe
2584	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
1184	2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe
2628	{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-1-5-21-2461186416-2307104501-1787948496-1000\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 1184 wrote to memory of 2628	1184	2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe	28
PID 1184 wrote to memory of 2628	1184	2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe	28
PID 1184 wrote to memory of 2628	1184	2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe	28
PID 1184 wrote to memory of 2628	1184	2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe	28
PID 2628 wrote to memory of 2584	2628	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2628 wrote to memory of 2584	2628	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2628 wrote to memory of 2584	2628	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2628 wrote to memory of 2584	2628	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_535139f45738f1165bc61f294e14f64c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1184
- 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_535139f45738f1165bc61f294e14f64c_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2628
- - 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:2584

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
535139f45738f1165bc61f294e14f64c

SHA1
9a134aaa90a829a189badff227a80b890b14f960

SHA256
98f1fba0f2d439f905d61a40283fc101f5307bcf3110895a876ed80844f5456d

SHA512
7b175bca8b160229a143bf6fc1e57edc93bc6fcc3849e1dedd7ce1e96653336ad2bb09ba2e94da9eb0cfa2df123a70e142778c7b0e668c8706f61cc4e47ab773

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads