cryptolocker | 163db290ba2f8a088ea7bb5838bb3747cd49ed89848dc378f190b9fc8f0fe7c8

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 21:24

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General

Target

2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe
Size

395KB
MD5

36d2bd43c8cea74a7e899f57c9baab64
SHA1

84bc63932258fb3a58c39465b365cecf920547ec
SHA256

163db290ba2f8a088ea7bb5838bb3747cd49ed89848dc378f190b9fc8f0fe7c8
SHA512

84f7fac2724b5e858a0a874b1eea802ea74feb08eb1c344e13c6fb0863d572b126a54d0ac7b83e66a24367dce260da0c00e951980f537f7fadde09b3d6a159ee
SSDEEP

6144:eWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCc//IQ3sd:eWkEuCaNT85I2vCMX5l+ZRvJ/wQ3sd

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2488	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2488	{34184A33-0407-212E-3320-09040709E2C2}.exe
3060	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2144	2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe
2488	{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-1-5-21-1658372521-4246568289-2509113762-1000\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 2144 wrote to memory of 2488	2144	2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe	28
PID 2144 wrote to memory of 2488	2144	2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe	28
PID 2144 wrote to memory of 2488	2144	2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe	28
PID 2144 wrote to memory of 2488	2144	2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe	28
PID 2488 wrote to memory of 3060	2488	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2488 wrote to memory of 3060	2488	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2488 wrote to memory of 3060	2488	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2488 wrote to memory of 3060	2488	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2144
- 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_36d2bd43c8cea74a7e899f57c9baab64_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2488
- - 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:3060

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
36d2bd43c8cea74a7e899f57c9baab64

SHA1
84bc63932258fb3a58c39465b365cecf920547ec

SHA256
163db290ba2f8a088ea7bb5838bb3747cd49ed89848dc378f190b9fc8f0fe7c8

SHA512
84f7fac2724b5e858a0a874b1eea802ea74feb08eb1c344e13c6fb0863d572b126a54d0ac7b83e66a24367dce260da0c00e951980f537f7fadde09b3d6a159ee

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads