Analysis
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max time kernel
146s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 22:29
Behavioral task
behavioral1
Sample
2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe
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Size
72KB
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MD5
f6aa69c58af44f63af3caf5aa9de898b
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SHA1
afd5f487b9ba2a4b3275b061109c35de089d1e2f
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SHA256
a16bb554ebec21a4791dd085377e00c0dc2ca95c2ec6be8680cd2137cf43227e
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SHA512
31ebf7650b22c4917b5a3bb7ee3f1e980a5a59d54169dc70131ca4386faa37a79257faf1133ae195bb412430eec7892bd8af01063769d7ba3f1722d9207d5c0a
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97xr+:C4Q2c94OtEvwDpj4H8z1
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1712-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000153cf-11.dat CryptoLocker_rule2 behavioral1/memory/1712-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/1712-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1712-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d0000000153cf-11.dat UPX behavioral1/memory/1712-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2504 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1712 2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe -
resource yara_rule behavioral1/memory/1712-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d0000000153cf-11.dat upx behavioral1/memory/1712-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2504-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 1712 wrote to memory of 2504 1712 2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe 28 PID 1712 wrote to memory of 2504 1712 2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe 28 PID 1712 wrote to memory of 2504 1712 2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe 28 PID 1712 wrote to memory of 2504 1712 2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_f6aa69c58af44f63af3caf5aa9de898b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1712 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2504
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
73KB
MD52c67e5fad2ca867049d38daa1b9c61ff
SHA1e0608aec4d45c928f76f9cbd166a8e374195bb5e
SHA256ec80540999ade45a9480d9b4d0fbd9b117effa757b7c426a50531c7922cf9d79
SHA5124885878c3c1276c742a5bfecf30be6eb7b1580fce8235311f8f12a98c5cd19b9084f3f16a6ce64988ff675a29ffafa1ad80b7f12668c56db05bf9ad26ed44d52