Analysis
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max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 18:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe
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Size
48KB
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MD5
5b9c0cd38a378e1fdcec7ee2cb0b6f8e
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SHA1
75bd2418d1574694a694e970344074ae409442bc
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SHA256
3e00d7c2a3e7bf76472f5c0783d4264f45da804040c8e818a3ee0b85baccb17c
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SHA512
e324dc72331e3e197860b0421dcb23be75c9d3fbfd396635c32ffbf884dbd61bff6c95f4292933063fa205ac0c81949c6844c72fc0db8829ad6a5e7830930339
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRhAG:xj+VGMOtEvwDpjy+TRhN
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2856-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001424e-11.dat CryptoLocker_rule2 behavioral1/memory/2856-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2856-14-0x0000000001EB0000-0x0000000001EC0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1052-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2856-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001424e-11.dat CryptoLocker_set1 behavioral1/memory/2856-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1052-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral1/memory/2856-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b00000001424e-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2856-16-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/1052-26-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 1052 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2856 2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_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 2856 wrote to memory of 1052 2856 2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe 28 PID 2856 wrote to memory of 1052 2856 2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe 28 PID 2856 wrote to memory of 1052 2856 2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe 28 PID 2856 wrote to memory of 1052 2856 2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_5b9c0cd38a378e1fdcec7ee2cb0b6f8e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2856 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD53210f30123d3f2397ad126249fca1f76
SHA1f0f65e4c71d1162c6b726b388fbe852ed791c770
SHA2567599f288e5132e3c5fed925e26f96ab3dd65a214099772bc926442dee88c88ef
SHA51244bab4c5a8cab9c6cf5acbec0a17802a696da7a58fe2fcaa164cb650110dd8353b8bfa644671e3c0f538b3fb952eb572518347f15eb0d8539e4425b8129b8998