Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 03:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe
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Size
54KB
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MD5
3f588dacc2c029080322321f740dd773
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SHA1
3f632c03dc6a790fc1dd76c5e8d9ca640d5035e9
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SHA256
a4d9c2f415ec9444198d95e45f6fc0245b326902e587ab0e5e86a5b561dea843
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SHA512
dac69b1df3673ff66807e0b71f6c9667c41dc82e4fe89527a6dd5f507b2b6dcf16c3bac1c6248113ef7c6c86c68747cebd820b8c46407259cb537a74dc5c0b77
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SSDEEP
768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6KAg:79mqyNhQMOtEvwDpjBxe8TpXRSDeKf
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3772-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3772-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3772-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000900000002328e-13.dat CryptoLocker_set1 behavioral2/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3772-25-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3008 asih.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 3772 wrote to memory of 3008 3772 2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe 81 PID 3772 wrote to memory of 3008 3772 2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe 81 PID 3772 wrote to memory of 3008 3772 2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_3f588dacc2c029080322321f740dd773_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3772 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3008
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD5648ce43a2a7f64bbdb288da5ef19ba22
SHA1130bcf79a11a83f77cb59f30451a0e3f39c20cd7
SHA25625df2892bbad327db5a1adf6566254f92895e625bb08b3eac7c872ca2349629b
SHA51216bdf3b70827115940ba6bc2e96d309b03f1f1a3d621b15e8c477fd090ba6eafa3172001dd45f35a833fb076d9e45362ee21126c99163d76e676b528b24df1ca