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Analysis
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max time kernel
93s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
31/05/2024, 20:54
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
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Size
63KB
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MD5
dcca372632b971aa18ab6086f57f12c1
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SHA1
e9a75dd10328322b30eb0894ced189c23c750f9c
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SHA256
c4bf1f3e07b7a88b828b2a5e6dc2607df81426814698c3fd1b8578ae06ec90ad
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SHA512
4574100e39f2c5b5b80f8a19b1a99ebe664e43b0a7926af13887669e82fdf019e2d54030cddec560ebb2a4aeb03a61dc5b2bfcafbec51c9f0851b6cd0ea34334
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SSDEEP
1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnx9:btng54SMLr+/AO/kIhfoKMHdaL
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000900000002344b-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation 2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation gewos.exe -
Executes dropped EXE 1 IoCs
pid Process 4072 gewos.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 2888 wrote to memory of 4072 2888 2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe 82 PID 2888 wrote to memory of 4072 2888 2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe 82 PID 2888 wrote to memory of 4072 2888 2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2888 -
C:\Users\Admin\AppData\Local\Temp\gewos.exe"C:\Users\Admin\AppData\Local\Temp\gewos.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4072
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD55f9b896c72bffaf037e0201d2f6399bf
SHA1b04d50b06b02b8d89807e9b809299a993299131e
SHA25680148aae380ad888ba992ab311400b44627dd65abe7a8ed71458282595bdd1f3
SHA51274dfb1878157ec453c0eefd0c5798c14f2ab9fb5454b0fb8353924254864bf00e784fa11a88c2ccd15da2f5857d9bfd0ea25b90562621053db73a5bc954e1745
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Filesize
185B
MD5155870028d5617fab8a4513c8a1e67e9
SHA1d61cd64e1bd13c8a18c350a7e6f5882d8e5a6ed3
SHA2562c55ea1ae3f0002d6e44dc9ba4008eeaf337698a9f8d80ec345cca839cbaa0ef
SHA512c6ade10b7caa4b7015c1717f194bce25d1868aa55f2161cf14f492e78ce595bf208f9fa9d8e5f24416da80cfc68e262babf221b02cd68059f0826d7982e3d457