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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20230712-en -
resource tags
arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system -
submitted
02/08/2023, 16:39
Behavioral task
behavioral1
Sample
39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
Resource
win10v2004-20230703-en
General
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Target
39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe
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Size
64KB
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MD5
39748e0438afc6561c3a3ab81c13f637
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SHA1
eda7568921f78e289b2f34df8a18b930fe6f1e1d
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SHA256
d65ffb5f3e5465b0cfb98d93a1d91e76299f1cceeacfb1e6234bddd4c28dc448
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SHA512
797d2a2208358f3220ba2ecb21d664ae1c692e8c89bf02ed10be30e4a2ccacbaccd590d7aa8d5ff6dd0772de7847a79d80f670c7bcef8f2cc9dfb15b613c5505
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTOOZs3O:T6a+rdOOtEvwDpjNr
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1816 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2468 39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe -
resource yara_rule behavioral1/memory/2468-54-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0008000000012023-65.dat upx behavioral1/memory/2468-70-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0008000000012023-69.dat upx behavioral1/memory/1816-71-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0008000000012023-80.dat upx behavioral1/memory/1816-82-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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
description pid Process procid_target PID 2468 wrote to memory of 1816 2468 39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe 28 PID 2468 wrote to memory of 1816 2468 39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe 28 PID 2468 wrote to memory of 1816 2468 39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe 28 PID 2468 wrote to memory of 1816 2468 39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe"C:\Users\Admin\AppData\Local\Temp\39748e0438afc6561c3a3ab81c13f637_cryptolocker_JC.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2468 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1816
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD5e347073d1b089de2ce6351dcb83e7d69
SHA1dd6e736fd92fd2c47466371e7bb43cda89b9b713
SHA256802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6
SHA512767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2
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Filesize
64KB
MD5e347073d1b089de2ce6351dcb83e7d69
SHA1dd6e736fd92fd2c47466371e7bb43cda89b9b713
SHA256802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6
SHA512767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2
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Filesize
64KB
MD5e347073d1b089de2ce6351dcb83e7d69
SHA1dd6e736fd92fd2c47466371e7bb43cda89b9b713
SHA256802c50b067f59dd9faa6701724c629896ac9657c10657282fd6d40751df1fca6
SHA512767e8174b8d5b087112a6c81fada549fae5196866fcecdb6f4dd88e65128db1c9dce3b419da653afddfd026ef1e1d150a440a210873fbb01f840bf18186e69b2