Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
21-05-2024 15:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe
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Size
53KB
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MD5
6e1f1f0f0d3a268698a67f5ae8d4e481
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SHA1
6b389e82acdf2178ec339b04ab606eb439151f09
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SHA256
b54354d42786f0bfa9a88610bdf5ce3fd97ae643a30e1e9bfbf51d2fc2c5a50a
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SHA512
d94d028d827abf871fa7aa8949b9d2484a44eccb1891cd1511d6ac945d27ebdef13c0faaed807db58fabe216dfd8f19f796b134340733ab24ad98c756289e199
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRp5jlS4:6j+1NMOtEvwDpjr8hhXj5h
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1732-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 behavioral1/memory/1732-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2316-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2316-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1732-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 behavioral1/memory/1732-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2316-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2316-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1732-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress \Users\Admin\AppData\Local\Temp\misid.exe INDICATOR_EXE_Packed_MPress behavioral1/memory/1732-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2316-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2316-26-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 2316 misid.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exepid process 1732 2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_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
Processes:
2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exedescription pid process target process PID 1732 wrote to memory of 2316 1732 2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe misid.exe PID 1732 wrote to memory of 2316 1732 2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe misid.exe PID 1732 wrote to memory of 2316 1732 2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe misid.exe PID 1732 wrote to memory of 2316 1732 2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6e1f1f0f0d3a268698a67f5ae8d4e481_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2316
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5a1fae7652c48e180efacaaa48dddc856
SHA110e8068a4bb84668eed1721db252034f36f86f63
SHA2567815e77d5bbd37210eca26ea0f8e62f568037f032a59286ce12859afb5b3a212
SHA512e2cb25f3667cf00a4bb8c085090cee6bb4eb069c3d63cc5f8a22ed904720dec8e3359cc47e4cfffa0ecd6d1af777139d8cca6ae3dc6736463e490b303a3170f9