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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
06/04/2024, 13:37
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe
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Size
66KB
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MD5
76281cfb23622f69c118dbe3b85adf9e
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SHA1
32663e7af039d096ff72ac218a2ac27c3c0241ea
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SHA256
b7f8c12ff845301d6bfe1c55859ebf6bed6f47f850cc6596980a17d84abb5cac
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SHA512
c2b3bc07015b7bff0a9b46f0a8d7f19b5acc364682f714ec7d6feacec0f33ee4868befe00c53d85758dae988a8993b9f1b9f7919b071d0fe40b278e5dacbb412
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xF6:6j+1NMOtEvwDpjr8ox8UDEpN/j6
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2236-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001224d-11.dat CryptoLocker_rule2 behavioral1/memory/2536-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2236-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2536-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2236-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001224d-11.dat CryptoLocker_set1 behavioral1/memory/2536-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2236-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2536-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2236-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b00000001224d-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2536-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2236-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2536-26-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2536 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2236 2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2236 wrote to memory of 2536 2236 2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe 28 PID 2236 wrote to memory of 2536 2236 2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe 28 PID 2236 wrote to memory of 2536 2236 2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe 28 PID 2236 wrote to memory of 2536 2236 2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-06_76281cfb23622f69c118dbe3b85adf9e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2536
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
66KB
MD5f25d5fcc22d0351638cbb23a20c3ef33
SHA19d877a3124c6413979f2c18809bd7f329b880875
SHA256cd60fde9572ea75d41b0e4c9c56ef8d5863aad063cfd636a2f94dd26b0bd22ed
SHA5120c3385c2c1878fa9804779ef6bbc9b0bf5969367e358309fa734f0ca5e0d441269de3d01baeec58e904ac5a23167e527ace93182e804523d881b9e9ce0812802