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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
08/03/2024, 19:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe
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Size
46KB
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MD5
2c0d040453588ba8f73b651dd7b305e8
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SHA1
ded1c25016cdb58e3c499a2141ba981d646678cc
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SHA256
1a8cc06a7133f7d356c4d6b86d71157f339feef99ec5dc7789273ff83f5730c7
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SHA512
ed63e72fcd91a6d83af7d3cac635a907bc660d5b7a6988a14bab14edddf7600b6038a89afa0593072ee2aa7fe6f3692c74f1f593aa296e4c2dfd2e7cb24c4eaa
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SSDEEP
384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdK:XS5nQJ24LR1bytOOtEvwDpjNbP/bK
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/916-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000231a8-13.dat CryptoLocker_rule2 behavioral2/memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4788-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4788-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral2/memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/4788-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/916-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x00070000000231a8-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/916-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4788-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4788-27-0x0000000000500000-0x000000000050F000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation 2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4788 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 916 wrote to memory of 4788 916 2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe 87 PID 916 wrote to memory of 4788 916 2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe 87 PID 916 wrote to memory of 4788 916 2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-08_2c0d040453588ba8f73b651dd7b305e8_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:4788
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD580a572072471e19d344b33f19764314a
SHA159511db25b623f7d4a7e8107768d53ffb431ff9e
SHA25642cab56855d93625cc53f081e402f9618ab3c3b0bca9a45e779b4b5cfc71310b
SHA51291abdfc4ce90da68747ad45bacce0c7f9c48ea08ceb81e1ead36cca67057911661121904486116f6e096d98245d54861a055adb5902d9da817b55ed225cd832f