cryptolocker | 821c26907f90dc7c057811fa0d26d9f48b77493eedf7ab9f39132404ef7a037f

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21-06-2024 22:12

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21-06-2024 22:10

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21-06-2024 22:09

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21-06-2024 22:09

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Analysis

max time kernel
600s
max time network
600s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-06-2024 22:10

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General

Target

d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe
Size

338KB
MD5

04fb36199787f2e3e2135611a38321eb
SHA1

65559245709fe98052eb284577f1fd61c01ad20d
SHA256

d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512

533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP

6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv

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

448 {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

448 {34184A33-0407-212E-3320-09040709E2C2}.exe
544 {34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
448	{34184A33-0407-212E-3320-09040709E2C2}.exe

pid	process
448	{34184A33-0407-212E-3320-09040709E2C2}.exe
544	{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-1-5-21-1337824034-2731376981-3755436523-1000\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 6 IoCs

Processes:

d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe{34184A33-0407-212E-3320-09040709E2C2}.exe

description	pid	process	target process
PID 2360 wrote to memory of 448	2360	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2360 wrote to memory of 448	2360	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 2360 wrote to memory of 448	2360	d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 448 wrote to memory of 544	448	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 448 wrote to memory of 544	448	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe
PID 448 wrote to memory of 544	448	{34184A33-0407-212E-3320-09040709E2C2}.exe	{34184A33-0407-212E-3320-09040709E2C2}.exe

C:\Users\Admin\AppData\Local\Temp\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe
"C:\Users\Admin\AppData\Local\Temp\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2360
- 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\d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:448
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C
    3⤵
    - Executes dropped EXE
    PID:544

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

Replay Monitor

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Downloads

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

Filesize
338KB

MD5
04fb36199787f2e3e2135611a38321eb

SHA1
65559245709fe98052eb284577f1fd61c01ad20d

SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444

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