Analysis
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max time kernel
120s -
max time network
147s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23-05-2024 18:20
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe
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Size
71KB
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MD5
d6f22aaa32809e48d3052cad0c2a7951
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SHA1
92d3a70134d39e746838b63a042389cfc9f8ea60
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SHA256
a6e5e588a522288590704cd2ebb6cfc652a6dcfdc7711e6137c0a497adb4e816
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SHA512
da7fa646fbc938f6a2d81802d655f3af08fe872ee36f9e6441418ebdd0f08c67a4049be549f529fdab9f2de04e8bd8b7fb7f8e8703cd4aacb01f1e3d99605130
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SSDEEP
768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4ZPsED3VK2+ZtyOjgO4r9vFAg2rq2g1B/R+:vj+jsMQMOtEvwDpj5HZYTjipvF24c5
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 2644 misid.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exepid process 2412 2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exedescription pid process target process PID 2412 wrote to memory of 2644 2412 2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe misid.exe PID 2412 wrote to memory of 2644 2412 2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe misid.exe PID 2412 wrote to memory of 2644 2412 2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe misid.exe PID 2412 wrote to memory of 2644 2412 2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_d6f22aaa32809e48d3052cad0c2a7951_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\misid.exeFilesize
72KB
MD588bbe440980759578e1775a603c4125c
SHA15a6dc2d1de6925a076596a6fd7bc2a4136cc4f4e
SHA256e9c3f85a95fa3eff33decf027212498ca925064295fc5d4d3d0c22972a906d36
SHA512066efab52c483301ecc2e7e5885d8687facd35319818b5426fad200133a5b057a4154f8786f15b3d530528b95385f1e18d448c6a32581c8c727b7204db31f310
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memory/2412-0-0x0000000000240000-0x0000000000246000-memory.dmpFilesize
24KB
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memory/2412-1-0x0000000000280000-0x0000000000286000-memory.dmpFilesize
24KB
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memory/2412-8-0x0000000000240000-0x0000000000246000-memory.dmpFilesize
24KB
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memory/2644-15-0x0000000000470000-0x0000000000476000-memory.dmpFilesize
24KB
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memory/2644-22-0x00000000002C0000-0x00000000002C6000-memory.dmpFilesize
24KB