cryptolocker | 3d2144ebd24d93c3faae69f30d29abfa65185fe80c8228312d0f2aaa7a58635d

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-11-2024 17:43

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General

Target

2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe
Size

354KB
MD5

62d88ec5c4ce38c6f4811f4325439e7f
SHA1

c964e68a27d08cffc83acd37177352911dddb088
SHA256

3d2144ebd24d93c3faae69f30d29abfa65185fe80c8228312d0f2aaa7a58635d
SHA512

98d8acb775130a69dd9bd1a6bc2132f26127546a0beebd8cf7167e5d2b81b32ed1a9a9759bcddd4e3c7dd92c46da126d07bb1e2d0160e5bb1e21a3d0042f0902
SSDEEP

6144:3Wmw0EuC90pZNA4TV5nhWgTO3x5N22vWvLRKKAX5l++myLdC:3WkEuCqhA4TV5nhT85I2vCMX5l+lQ

Score

10^/10

cryptolocker discovery persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker
Cryptolocker family
cryptolocker

Deletes itself 1 IoCs

pid	Process
2156	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2156	{34184A33-0407-212E-3320-09040709E2C2}.exe
636	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2372	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe
2156	{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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_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 8 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2156	2372	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe	31
PID 2372 wrote to memory of 2156	2372	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe	31
PID 2372 wrote to memory of 2156	2372	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe	31
PID 2372 wrote to memory of 2156	2372	2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe	31
PID 2156 wrote to memory of 636	2156	{34184A33-0407-212E-3320-09040709E2C2}.exe	32
PID 2156 wrote to memory of 636	2156	{34184A33-0407-212E-3320-09040709E2C2}.exe	32
PID 2156 wrote to memory of 636	2156	{34184A33-0407-212E-3320-09040709E2C2}.exe	32
PID 2156 wrote to memory of 636	2156	{34184A33-0407-212E-3320-09040709E2C2}.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2372
- 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\2024-11-30_62d88ec5c4ce38c6f4811f4325439e7f_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2156
- - 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
    - System Location Discovery: System Language Discovery
    PID:636

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
354KB

MD5
62d88ec5c4ce38c6f4811f4325439e7f

SHA1
c964e68a27d08cffc83acd37177352911dddb088

SHA256
3d2144ebd24d93c3faae69f30d29abfa65185fe80c8228312d0f2aaa7a58635d

SHA512
98d8acb775130a69dd9bd1a6bc2132f26127546a0beebd8cf7167e5d2b81b32ed1a9a9759bcddd4e3c7dd92c46da126d07bb1e2d0160e5bb1e21a3d0042f0902

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads