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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28/03/2024, 04:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe
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Size
41KB
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MD5
9d0bce2c4ad01a8b721d2b38080f8784
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SHA1
4f8d050d782e07de705fc23ea24db57dec330507
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SHA256
fabcbdbe5a0ac3d07e68b380d0e569bb81ae3cc0886708106112d95c0ab5d1fb
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SHA512
0b277562e079da04440e174de5f434058017b3137a5f1efd083a0d751778ad5039fd702896252e2582774bd2058df483cd670a77d9b365cbf5ae1a53df883013
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SSDEEP
768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRvM:m5nkFNMOtEvwDpjG8hhXNM
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4212-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000023208-13.dat CryptoLocker_rule2 behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/4212-0-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0008000000023208-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/3644-17-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4212-18-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3644-27-0x0000000000500000-0x000000000050E000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation 2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3644 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 4212 wrote to memory of 3644 4212 2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe 87 PID 4212 wrote to memory of 3644 4212 2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe 87 PID 4212 wrote to memory of 3644 4212 2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-28_9d0bce2c4ad01a8b721d2b38080f8784_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4212 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3644
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD59250737b322d4bdd6250dc67eba840a7
SHA1b8aca40548ab468000e92ff3426be0361b7d3d16
SHA2563eb150cdab91ca8a0195159010f16724707ec8bb59e0bf63e89d0ef16e95c1d4
SHA512a6f48a1ab4016e6d25d7bd12202af5e530cae75d40102dbca2a34f90d05df3fb83e3b0d239bb998d5f70916031eeddd11cd31dd06f27527332d1002e064e7d72