cryptolocker | 0790af18f7f7501939c42e06a96bb0dae193fc8cb1f9e4020b975d831ddbe836

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 17:21

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General

Target

2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe
Size

399KB
MD5

bdeee13c6bf7ec1095a900d901cccc4e
SHA1

2d73924e966f5d088a070d2851517dffb444b1e1
SHA256

0790af18f7f7501939c42e06a96bb0dae193fc8cb1f9e4020b975d831ddbe836
SHA512

b8528da5e4fe701c6f84f6160a4d4435a30e59b4c36f22ab80b43dec9139dde92938524990194c6e96c38cc303a746feb1eaf32a2a8bbfc2e798bcb95a6a213e
SSDEEP

6144:DWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCRlIQ3ARJa:DWkEuCaNT85I2vCMX5l+ZRvOKQ3ARJa

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2948	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2948	{34184A33-0407-212E-3320-09040709E2C2}.exe
352	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2904	2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe
2948	{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-1-5-21-2721934792-624042501-2768869379-1000\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 2904 wrote to memory of 2948	2904	2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe	28
PID 2904 wrote to memory of 2948	2904	2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe	28
PID 2904 wrote to memory of 2948	2904	2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe	28
PID 2904 wrote to memory of 2948	2904	2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe	28
PID 2948 wrote to memory of 352	2948	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2948 wrote to memory of 352	2948	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2948 wrote to memory of 352	2948	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2948 wrote to memory of 352	2948	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2904
- 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_bdeee13c6bf7ec1095a900d901cccc4e_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2948
- - 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:352

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
399KB

MD5
bdeee13c6bf7ec1095a900d901cccc4e

SHA1
2d73924e966f5d088a070d2851517dffb444b1e1

SHA256
0790af18f7f7501939c42e06a96bb0dae193fc8cb1f9e4020b975d831ddbe836

SHA512
b8528da5e4fe701c6f84f6160a4d4435a30e59b4c36f22ab80b43dec9139dde92938524990194c6e96c38cc303a746feb1eaf32a2a8bbfc2e798bcb95a6a213e

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads