Analysis
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max time kernel
88s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 20:00
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe
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Size
54KB
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MD5
5c3065f93b534a1249dea9a6f9d854a9
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SHA1
de79f3789661ea38d51955ad89e47f75886c89e1
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SHA256
c885f4d3f4ee75d5fde18d77a413e02597366dcaa2f597dab95c2a7dbc46bd58
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SHA512
aef34859270befb44b955d6c0998f3cc770be3fdaf23e760f420aeecbae037b5d277afa8c32e8d471a4f8a5f06ac504ff9438593e82eec4a5e76df478c036796
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbP/MM0:xj+VGMOtEvwDpjubXMM0
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress C:\Users\Admin\AppData\Local\Temp\misid.exe INDICATOR_EXE_Packed_MPress behavioral2/memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
misid.exe2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation misid.exe Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation 2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 3088 misid.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
Processes:
2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exedescription pid process target process PID 2632 wrote to memory of 3088 2632 2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe misid.exe PID 2632 wrote to memory of 3088 2632 2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe misid.exe PID 2632 wrote to memory of 3088 2632 2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_5c3065f93b534a1249dea9a6f9d854a9_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\misid.exeFilesize
54KB
MD5dd781283f898364d0d052b7948e978bc
SHA142bf5bb19f1d27454a7557fb5001d60320df621e
SHA2567c268e3724fe094eb481b83f4b8f4f6e784aba2e9934c5613ebe21a0c99a7bd8
SHA5126c57a56c99fc82eb2347f6df043bd4eed7043eadb8e7e9fdf95447feeaf19376e1be15c69c0017277d9ab2c62b40091091df41035432f4d74dfb6ba0da65f2d9
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memory/2632-0-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/2632-1-0x00000000006C0000-0x00000000006C6000-memory.dmpFilesize
24KB
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memory/2632-2-0x00000000006C0000-0x00000000006C6000-memory.dmpFilesize
24KB
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memory/2632-3-0x00000000006E0000-0x00000000006E6000-memory.dmpFilesize
24KB
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memory/2632-17-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/3088-18-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/3088-20-0x00000000004F0000-0x00000000004F6000-memory.dmpFilesize
24KB
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memory/3088-22-0x00000000004D0000-0x00000000004D6000-memory.dmpFilesize
24KB
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memory/3088-55-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB