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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
25/02/2024, 12:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe
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Size
49KB
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MD5
4f928c70eb2f2605e81b468116c850b0
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SHA1
c2e1a092f12fd2000301129a3594c4dee8f80d22
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SHA256
7405830bcd9206b5ab5b27e94c36ab0a730d2f36da6744c2cb132781abffc967
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SHA512
320f2d9351bc0472ba6eab50ede1890885172d80ba9ee60dd5164a9f772ed5417ef447f474e783115d5a99c9de5f1c57e92bc4f48e6908b3f5eabcb1718df972
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUvH:BbdDmjr+OtEvwDpjMX6
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1200-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00090000000122bf-11.dat CryptoLocker_rule2 behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1200-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00090000000122bf-11.dat UPX behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2736 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1200 2024-02-25_4f928c70eb2f2605e81b468116c850b0_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
description pid Process procid_target PID 1200 wrote to memory of 2736 1200 2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe 28 PID 1200 wrote to memory of 2736 1200 2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe 28 PID 1200 wrote to memory of 2736 1200 2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe 28 PID 1200 wrote to memory of 2736 1200 2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1200 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2736
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD5eafda11cf13bd8e72ffaf0371c7498ff
SHA110d4a55b15928a08927856ae101f1fef376bb213
SHA256024680708e2cfe77ce47818600bde2b02090c891367eee0b9207dc94c9669937
SHA5129d84b9fc639af2866868b42f0881805a2123607a59557bd2ddd72e1b7c1eba9565a643bc04927bbc7c2de94adf9abed9c81b465bba89f799ac06bfcf877ffebd