cryptolocker | 6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091

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 20:59

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General

Target

2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe
Size

390KB
MD5

d15685fbb5e5e45d4f9d31078268f345
SHA1

9551d766b07a5a8e98146bc91473eb027dc0968c
SHA256

6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091
SHA512

c4c768d8bb2af978ccaaf62e6cdbdd1e8c524a678929a064017e5b9a9b178d4430a76ac19d569e6849f300b13aa97f6b8d08d573f5fdd4e74793d02573dd5455
SSDEEP

6144:rWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCJS9SGg:rWkEuCaNT85I2vCMX5l+ZRvqKK

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
1888	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
1888	{34184A33-0407-212E-3320-09040709E2C2}.exe
2984	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
1708	2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe
1888	{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-1-5-21-3787592910-3720486031-2929222812-1000\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 1708 wrote to memory of 1888	1708	2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe	28
PID 1708 wrote to memory of 1888	1708	2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe	28
PID 1708 wrote to memory of 1888	1708	2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe	28
PID 1708 wrote to memory of 1888	1708	2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe	28
PID 1888 wrote to memory of 2984	1888	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1888 wrote to memory of 2984	1888	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1888 wrote to memory of 2984	1888	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1888 wrote to memory of 2984	1888	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1708
- 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_d15685fbb5e5e45d4f9d31078268f345_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1888
- - 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:2984

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
390KB

MD5
d15685fbb5e5e45d4f9d31078268f345

SHA1
9551d766b07a5a8e98146bc91473eb027dc0968c

SHA256
6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091

SHA512
c4c768d8bb2af978ccaaf62e6cdbdd1e8c524a678929a064017e5b9a9b178d4430a76ac19d569e6849f300b13aa97f6b8d08d573f5fdd4e74793d02573dd5455

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads