Analysis
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max time kernel
147s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
11/06/2024, 01:11
Behavioral task
behavioral1
Sample
2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe
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Size
41KB
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MD5
a16e6ad99f81f5aa87ce0a438160f661
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SHA1
1dc01d9b0a8f47986b40c9c9dc9c866d62b50a37
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SHA256
c8a5d40b1a9548080cb7b746f234ccb4bc0d2407b50705d0437794bcf4d37d0d
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SHA512
48c6a80f75c35d6d68cd401148e32fd966bca92d747c096a4629ea4f25ff01f5be317c3f684fbb63df4cb3a13eefdd71f4f7ce0d15cae3b71e3db381ecefa708
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYZ:qDdFJy3QMOtEvwDpjjWMl7Tc
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012286-11.dat CryptoLocker_rule2 behavioral1/memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2724-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012286-11.dat CryptoLocker_set1 behavioral1/memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2724-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000012286-11.dat UPX behavioral1/memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2724-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2724 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2412 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe -
resource yara_rule behavioral1/memory/2412-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000012286-11.dat upx behavioral1/memory/2724-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2412-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2724-27-0x0000000000500000-0x0000000000510000-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 2412 wrote to memory of 2724 2412 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe 28 PID 2412 wrote to memory of 2724 2412 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe 28 PID 2412 wrote to memory of 2724 2412 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe 28 PID 2412 wrote to memory of 2724 2412 2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_a16e6ad99f81f5aa87ce0a438160f661_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2412 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2724
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD57c6832172360a2c9dd7492cecefd6fc1
SHA14c9bdbee035d9748d681556466b91cb6f99a4924
SHA2560780d1f725fbc1b6d11380caa9c71f326366fd96955423eb0faf2a3b142ea1e0
SHA512cc5905d93e48983765d341bd58f436c7b384836b1c396fb46d1102eb64b0bbce6e134ecdccd9bcc623158ae8cb6e290da3f0e058c51d7a92d06ad10a41341831