cryptolocker | 1a48bcf78ceddecbf00755997e9472994bd9eba90926b22b490e9bd5152d1e54

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 13:48

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General

Target

2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe
Size

403KB
MD5

b5d9a91d2e61d2b837b0dbecd39f5588
SHA1

600e012e873a9561d98dc46d4d4dee02659a3cf2
SHA256

1a48bcf78ceddecbf00755997e9472994bd9eba90926b22b490e9bd5152d1e54
SHA512

02d47a21690723baec621f6de78bb69eedd73e56013853a058d4644e75c81ee2e8428b8bf1affec91c5c3df1cf8188a4a70d8969f891bf0f87ddd403f84d4e69
SSDEEP

6144:MWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCguCAbbr7:MWkEuCaNT85I2vCMX5l+ZRv3uCAbv7

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

848 {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

848 {34184A33-0407-212E-3320-09040709E2C2}.exe
2816 {34184A33-0407-212E-3320-09040709E2C2}.exe
Loads dropped DLL 2 IoCs

Processes:

2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

pid process

1556 2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe
848 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
848	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
848	{34184A33-0407-212E-3320-09040709E2C2}.exe
2816	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
1556	2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe
848	{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-1-5-21-330940541-141609230-1670313778-1000\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

Processes:

2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 1556 wrote to memory of 848	1556	2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1556 wrote to memory of 848	1556	2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1556 wrote to memory of 848	1556	2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 1556 wrote to memory of 848	1556	2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 848 wrote to memory of 2816	848	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 848 wrote to memory of 2816	848	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 848 wrote to memory of 2816	848	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 848 wrote to memory of 2816	848	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1556
- 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_b5d9a91d2e61d2b837b0dbecd39f5588_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:848
- - 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:2816

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
384KB

MD5
bafe1294bae9afb8af51f63dfe46db95

SHA1
1be0c02095e6ea37ec1e140c155bb8b2a60783db

SHA256
61e635c14cbc947da553bfc94d580315cb99c1cecd9f613fad0a620e39f4b474

SHA512
01252e83e4480e52afaa8def6af298b60eedc8d5813e901b6867dffd5a797f98575bc0b9c618a1aed3b99a392f90b99f3c760c74092a1aedaf1601a8d3651491

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

Filesize
403KB

MD5
b5d9a91d2e61d2b837b0dbecd39f5588

SHA1
600e012e873a9561d98dc46d4d4dee02659a3cf2

SHA256
1a48bcf78ceddecbf00755997e9472994bd9eba90926b22b490e9bd5152d1e54

SHA512
02d47a21690723baec621f6de78bb69eedd73e56013853a058d4644e75c81ee2e8428b8bf1affec91c5c3df1cf8188a4a70d8969f891bf0f87ddd403f84d4e69

Download Submit