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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18/02/2024, 17:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe
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Size
102KB
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MD5
932647fa968bed1ad446a5477b57b056
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SHA1
bd36fea153e41332ce1af1ad4e072f86bd04fca6
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SHA256
903575b4fd53a1dc493d01314c7648eeaf17fbaaf6bda146cf423c4a6baef532
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SHA512
cbccc5387e05dee0bf2433a32de94ae8421a78a9074f7682b7091eef243c80102a63a56d4f83cae9ff550993197ef7136f046a8e549d917d844762f456bd93bc
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMb5:xj+VGMOtEvwDpjubwQEIiVmkxv/m5
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000023208-13.dat CryptoLocker_rule2 behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0008000000023208-13.dat CryptoLocker_set1 behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/640-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0008000000023208-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/640-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3812-26-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress -
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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation 2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3812 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
description pid Process procid_target PID 640 wrote to memory of 3812 640 2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe 87 PID 640 wrote to memory of 3812 640 2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe 87 PID 640 wrote to memory of 3812 640 2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_932647fa968bed1ad446a5477b57b056_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:640 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3812
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
102KB
MD5e77b66212bf81307fe6ea703d0473536
SHA16731b3daead9cc86be227a6abfaed3595bf29d6d
SHA256c9a6adb38af0588004abbe66591d5a0dd635be9dd9b61705eb0c826989f4f0e6
SHA512180461ffd29c48dd451f01388c9490e187cee9082f057cd817edc77f65e615a44f1de2084dfafdf1ff95524b0a5783c5bee97cec41b9dc3aea793846a51cf403