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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
06/06/2024, 21:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe
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Size
43KB
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MD5
765fee9c9480f14a16f4957c0ac0a7c2
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SHA1
c3491f2d3733baad27aa7757816e194501775ab0
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SHA256
8fa402e824670ae183cab0a5f8e4b7fca1fe18fdbb1970e862412e193a8fcef9
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SHA512
b7a2eb0f46cd5b4ce18b2e740f39ed70ef915f748f17473bc3b9e048736c7202bc7bbbf3d8819b4746bdfd5a155bd97781a1767bcad4c9a247c280c6fbdd0117
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SSDEEP
768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvgpnY1n9A:m5nkFNMOtEvwDpjG8hgpY19A
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2736-8-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000144e4-11.dat CryptoLocker_rule2 behavioral1/memory/2736-13-0x0000000001DD0000-0x0000000001DDE000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2340-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2340-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/2736-8-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/2340-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2736-8-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b0000000144e4-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2736-13-0x0000000001DD0000-0x0000000001DDE000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2340-17-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2340-27-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2340 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2736 2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_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 2736 wrote to memory of 2340 2736 2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe 28 PID 2736 wrote to memory of 2340 2736 2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe 28 PID 2736 wrote to memory of 2340 2736 2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe 28 PID 2736 wrote to memory of 2340 2736 2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_765fee9c9480f14a16f4957c0ac0a7c2_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2340
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD579a7023236619cebac187511144b99f7
SHA1c6b87f9e101f3f8191325669c27771fe2fe7a024
SHA256c283daa9debf37fd9c8bacbef521d6ed793232dfc868c69606a3ea0f02ded8d1
SHA5128bdc7c46d1e0958aeb2d0f344179adf053a89fa7bf80e8ca63965e69bdddc06dd96067daddaaec2b5bb05e27dc132e89937c72360d139858b0657c5d6d1869a5