Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
09-06-2023 06:52
Static task
static1
Behavioral task
behavioral1
Sample
03989399.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
03989399.exe
Resource
win10v2004-20230220-en
General
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Target
03989399.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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Executes dropped EXE 2 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exe{34184A33-0407-212E-3320-09040709E2C2}.exepid process 1328 {34184A33-0407-212E-3320-09040709E2C2}.exe 4592 {34184A33-0407-212E-3320-09040709E2C2}.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
{34184A33-0407-212E-3320-09040709E2C2}.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe" {34184A33-0407-212E-3320-09040709E2C2}.exe Key created \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows\CurrentVersion\Run {34184A33-0407-212E-3320-09040709E2C2}.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
03989399.exe{34184A33-0407-212E-3320-09040709E2C2}.exedescription pid process target process PID 5092 wrote to memory of 1328 5092 03989399.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 5092 wrote to memory of 1328 5092 03989399.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 5092 wrote to memory of 1328 5092 03989399.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 1328 wrote to memory of 4592 1328 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 1328 wrote to memory of 4592 1328 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe PID 1328 wrote to memory of 4592 1328 {34184A33-0407-212E-3320-09040709E2C2}.exe {34184A33-0407-212E-3320-09040709E2C2}.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\03989399.exe"C:\Users\Admin\AppData\Local\Temp\03989399.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:5092 -
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\03989399.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1328 -
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
PID:4592
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exeFilesize
338KB
MD504fb36199787f2e3e2135611a38321eb
SHA165559245709fe98052eb284577f1fd61c01ad20d
SHA256d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
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C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exeFilesize
338KB
MD504fb36199787f2e3e2135611a38321eb
SHA165559245709fe98052eb284577f1fd61c01ad20d
SHA256d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
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C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exeFilesize
338KB
MD504fb36199787f2e3e2135611a38321eb
SHA165559245709fe98052eb284577f1fd61c01ad20d
SHA256d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
SHA512533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444