Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
04-05-2024 03:26
Behavioral task
behavioral1
Sample
2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe
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Size
72KB
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MD5
2a239a39517a0645a7be12a1ef6f02eb
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SHA1
f7c8e73d176369947dbee54a79afc55d8dff2bae
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SHA256
18703721f358a6d3ada2ab93338e4a948b8a0a0d5dae9ab7321711230505e430
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SHA512
b784733692b8f665bf81a42eb3a723ab919e34a98d42e3cb229f26af483711051d908c519c96e6b4f8b5a260d448be0d40a0035b92184b358808b3a993f650b0
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95:C4Q2c94OtEvwDpj4H8zo
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2188-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001444f-11.dat CryptoLocker_rule2 behavioral1/memory/2580-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2188-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2580-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2188-8-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b00000001444f-11.dat UPX behavioral1/memory/2580-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2580 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2188 2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe -
resource yara_rule behavioral1/memory/2188-8-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b00000001444f-11.dat upx behavioral1/memory/2580-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2580-27-0x0000000000500000-0x0000000000510000-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 2188 wrote to memory of 2580 2188 2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe 28 PID 2188 wrote to memory of 2580 2188 2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe 28 PID 2188 wrote to memory of 2580 2188 2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe 28 PID 2188 wrote to memory of 2580 2188 2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-04_2a239a39517a0645a7be12a1ef6f02eb_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2580
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
72KB
MD5bc5218a5ea4a7e8bde2f8f09a2c40d45
SHA1aaf40467a6b5402453013ce2e8bb059394f37049
SHA256f18cb7148625b09ad087e9fddcfa32e02db183f61d6668a6a74f513190047484
SHA5128148bd590037a48fd1df162ad144a5400830aff274d951ea59cc1aa2848d11781f7ee533d6ff51c509ef5504d2c1d898e0e16810cc577e2c20d1751746fac136