Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
31/05/2024, 22:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe
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Size
58KB
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MD5
1d2087291728af8bc7c882bd394c74f1
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SHA1
68addb81d0e07693da841e657e956ea504588ff2
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SHA256
3d4b4acfa93194df86e5322601488ffa1559b7c41629c130833260088ede6794
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SHA512
35158cfa4ceaa5fae23c6fa043f8b37acf36e2bb3203dd464dee1a2a5eff6d365d79cc419a5c436b487368bb79f7cc9c8e5b4fefbaa929d1155cfbe267b71c58
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impy/:BbdDmjr+OtEvwDpjMU
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000143fa-11.dat CryptoLocker_rule2 behavioral1/memory/856-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/280-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/856-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/280-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d0000000143fa-11.dat UPX behavioral1/memory/856-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/280-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 280 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 856 2024-05-31_1d2087291728af8bc7c882bd394c74f1_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 856 wrote to memory of 280 856 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe 28 PID 856 wrote to memory of 280 856 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe 28 PID 856 wrote to memory of 280 856 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe 28 PID 856 wrote to memory of 280 856 2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1d2087291728af8bc7c882bd394c74f1_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:856 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:280
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD5be76d5a325a41ea58caa03102971e7e1
SHA10f9234a782a5d505e585d5b4bf07830dda683b24
SHA2563126cfbac652dbc87c0d1627baf407dd8a10c5975190f2cf7cc7da5cbee2733b
SHA5124b6f1357f9b64296ccf8bbc7f0dcc912813c59f03991d74f46618e245d6186819e727e384da64de426017ba0d4145a112b5b4b89c1b0c6b1070b1e3287808450