Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
14-03-2024 23:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe
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Size
60KB
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MD5
de47ff97b4894230565258bf2593e1b5
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SHA1
99d85983c6508d19de251c4503049c3355673d88
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SHA256
aa4d382bf8d7b3151431cc8d7f72ab628a5b2f42c7278e568550d3eacc04a2b6
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SHA512
f8f6eed6627fcf1b86b7c7edd640823575fdf3abb41c7451b5d37b3eb1a1c07e182bd816a540ab058a73449a906faf6fe6a4103631ab1f3f7579f663fad6f00b
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6144:BbdDmjr+OtEvwDpjMz
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/880-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000002322a-13.dat CryptoLocker_rule2 behavioral2/memory/880-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4840-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4840-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral2/memory/880-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/4840-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral2/memory/880-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x000700000002322a-13.dat UPX behavioral2/memory/880-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/4840-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/4840-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation 2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4840 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 880 wrote to memory of 4840 880 2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe 91 PID 880 wrote to memory of 4840 880 2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe 91 PID 880 wrote to memory of 4840 880 2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-14_de47ff97b4894230565258bf2593e1b5_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:880 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4840
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60KB
MD5c52e86f5ad3b756669b7ab1ae02e8589
SHA1423e5f50f95be34edb80611c0d81124ce4bc3b0e
SHA2560d60f94bae5833058ec932309abe2b8eb37ce9e3dd6ec7eb1f1278b05d902ad9
SHA51217ff5a92aad9e04f4dbb9982e754a3c2842abf7f2ad4f818d9e4bb53a7ef871300b3b4670bfd984fe4776cda23273955608aab0adc24ba4a566ed283ee1a685d