cryptolocker | d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9

max time kernel
120s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-es
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-eslocale:es-esos:windows11-ltsc_2024-x64systemwindows
submitted
11/11/2026, 01:54

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General

Target
Ransomware/CryptoLocker.exe
Size 338KB
Sample261111-cb2f9sts2r
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
TLSH
T14F74E073B4919525E9E04DB4F6B9BD324639B8396F3D4BC792842D4E04701CBEAB9383
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery cryptolocker persistence ransomware

Malware Config

Signatures

Family: CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 TTPs 1 IoCs

defense_evasion

File Deletion

T1070.004

pid	Process
5944	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 3 IoCs

pid	Process
5944	{34184A33-0407-212E-3320-09040709E2C2}.exe
3520	{34184A33-0407-212E-3320-09040709E2C2}.exe
3032	{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-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	{34184A33-0407-212E-3320-09040709E2C2}.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	{34184A33-0407-212E-3320-09040709E2C2}.exe

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{34184A33-0407-212E-3320-09040709E2C2}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CryptoLocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{34184A33-0407-212E-3320-09040709E2C2}.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4148 wrote to memory of 5944	4148	CryptoLocker.exe	89
PID 5944 wrote to memory of 3520	5944	{34184A33-0407-212E-3320-09040709E2C2}.exe	90

C:\Users\Admin\AppData\Local\Temp\Ransomware\CryptoLocker.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware\CryptoLocker.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148
- 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\Ransomware\CryptoLocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Reads the TCP/IP host and domain name from the registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5944
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000024C
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3520

C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3032

Network

MITRE ATT&CK Enterprise v16

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

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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

Path C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Size 338KB
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
TLSH
T14F74E073B4919525E9E04DB4F6B9BD324639B8396F3D4BC792842D4E04701CBEAB9383
MD5 SHA1 SHA512 SSDEEP TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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