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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
08/03/2024, 01:40
Behavioral task
behavioral1
Sample
2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe
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Size
75KB
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MD5
6b9660566936c0cf922d29d9e711371f
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SHA1
3adfec74a7a127d30f6c87451f9e79114b6b9d41
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SHA256
4d053be04b012a23e2953526e6132222f6ba35b73457cc275da2c9098fcb7f41
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SHA512
cf6d4750080a95b9381ae0fe2e6bfcf8f6a71268ca0a56111b8a87e72e957d6cf6eb5ec9a64e20c2a1cc1da55bfc2c530896577812bbcb927bfcedfc72610e27
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdJcRN:T6a+rdOOtEvwDpjNtg
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000013420-11.dat CryptoLocker_rule2 behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2480-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2480-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000013420-11.dat CryptoLocker_set1 behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2480-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2480-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000013420-11.dat UPX behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2480-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2480-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2480 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2320 2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe -
resource yara_rule behavioral1/memory/2320-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000013420-11.dat upx behavioral1/memory/2320-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2480-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2480-26-0x0000000000500000-0x0000000000510000-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 2320 wrote to memory of 2480 2320 2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe 28 PID 2320 wrote to memory of 2480 2320 2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe 28 PID 2320 wrote to memory of 2480 2320 2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe 28 PID 2320 wrote to memory of 2480 2320 2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-08_6b9660566936c0cf922d29d9e711371f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2320 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2480
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
75KB
MD50f11e8717eb44b169a77f5e52c260fd5
SHA16e71e85d393cb790fab9ab04b89fd554a7dc9290
SHA2560f47ad0cea0d1b78bc9aea96ba085bbc5450c618ecd00a9ce364ae44f9506709
SHA512af8e34e0bce13bb27d08844cae505850125ddf527196cb871e1733dad5cc9c92e52dbe8c7f9440fa078dd1d677d53685465838ce040df34228596a4d325d0cc6