Analysis
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max time kernel
46s -
max time network
47s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10-11-2024 16:02
Static task
static1
Behavioral task
behavioral1
Sample
CryptoLocker.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
CryptoLocker.exe
Resource
win10v2004-20241007-en
General
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Target
CryptoLocker.exe
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Size
338KB
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MD5
04fb36199787f2e3e2135611a38321eb
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SHA1
65559245709fe98052eb284577f1fd61c01ad20d
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SHA256
d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
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SHA512
533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
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SSDEEP
6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
Malware Config
Signatures
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CryptoLocker
Ransomware family with multiple variants.
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Cryptolocker family
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Deletes itself 1 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exepid process 2020 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Executes dropped EXE 2 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exe{34184A33-0407-212E-3320-09040709E2C2}.exepid process 2020 {34184A33-0407-212E-3320-09040709E2C2}.exe 4224 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\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.
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exe{34184A33-0407-212E-3320-09040709E2C2}.exeCryptoLocker.exedescription 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 {34184A33-0407-212E-3320-09040709E2C2}.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language CryptoLocker.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
CryptoLocker.exe{34184A33-0407-212E-3320-09040709E2C2}.exedescription pid process target process PID 2592 wrote to memory of 2020 2592 CryptoLocker.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 2592 wrote to memory of 2020 2592 CryptoLocker.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 2592 wrote to memory of 2020 2592 CryptoLocker.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 2020 wrote to memory of 4224 2020 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 2020 wrote to memory of 4224 2020 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 2020 wrote to memory of 4224 2020 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\CryptoLocker.exe"C:\Users\Admin\AppData\Local\Temp\CryptoLocker.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2592 -
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\CryptoLocker.exe"2⤵
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2020 -
C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe"C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4224
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4988
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
338KB
MD504fb36199787f2e3e2135611a38321eb
SHA165559245709fe98052eb284577f1fd61c01ad20d
SHA256d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444