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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
23/01/2024, 09:38
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe
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Size
41KB
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MD5
2673660cb351427bb1131a17585fccf6
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SHA1
b9b18d38a1ffa9be602dcd705966988129557e62
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SHA256
fe09a898b65158aa653fd04cb2b573338b8bc831bc91db8ae8fac1db88939d4c
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SHA512
fbac0ec98dca2f6d0fca0b84d4dae8af1322a35d3162eb51a332685f49af36d74c8dd0fc9a711ccb4ab5bad9d5ec69d6f700d21d3702ba594aec46846eece7af
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SSDEEP
768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFqq10H:bxNrC7kYo1Fxf3s05rwxbFQH
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00080000000231e7-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation 2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3800 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 3628 wrote to memory of 3800 3628 2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe 88 PID 3628 wrote to memory of 3800 3628 2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe 88 PID 3628 wrote to memory of 3800 3628 2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-23_2673660cb351427bb1131a17585fccf6_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3628 -
C:\Users\Admin\AppData\Local\Temp\pissa.exe"C:\Users\Admin\AppData\Local\Temp\pissa.exe"2⤵
- Executes dropped EXE
PID:3800
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD517649b87e54f85796825996458d27e2e
SHA1cdf203b63d5c6e4e18b8c741c1adc109ee8dbd23
SHA25659c7f6562513c3142c111301e21e6b3fe22fbc3cabdf1999311c6093c46a486d
SHA512335b6c517e25b70cbcc2d0af3923290cc1b89254b97a081f4a56f2a8bdb415d34c130c9d406a8a0bc504b1dde1aa905d6de538c9f8ca63f4e78f57df3c893fe2