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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
23/02/2024, 03:38
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe
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Size
41KB
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MD5
cdfcf68d64c019709076d0e9ccda99c8
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SHA1
26303e66e88130a9e5cc231488cfd25df6cbef38
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SHA256
f7b62d160827281ac84f5e5c75ec377a352d48a7bbd9ca9c4bd44e8595c3b22f
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SHA512
cec20524ff1f19f2c43d23ea7db84a9fbe17f021d370fbbe18230c4ab182a545977d353f78a08448e911fde4ae1514be40902ba5eabd155077b697bf2eebaf7f
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqJzRv:bxNrC7kYo1Fxf3s05rwxbFS9
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0008000000023260-12.dat CryptoLocker_rule2 -
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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation 2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1760 pissa.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 3696 wrote to memory of 1760 3696 2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe 87 PID 3696 wrote to memory of 1760 3696 2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe 87 PID 3696 wrote to memory of 1760 3696 2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_cdfcf68d64c019709076d0e9ccda99c8_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Executes dropped EXE
PID:1760
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD597f0e7ab4041621ae38c2eabf5551223
SHA1976fa1ce8099fc51d76e3bb6e70aefa9778b18c4
SHA256ca62420a41db1edbd19ac9de1b85ab086d14556013f099c9e338e8db2478734e
SHA512af7f346ce238256d81e5ae9267a57ba23a19f7177655b48db9c54d199f356ff47c59b0654a8ae03a8a7369c96b9ac376543d49f7335f7adef602ee06298f6a74