Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
03/06/2024, 07:44
Behavioral task
behavioral1
Sample
2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe
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Size
81KB
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MD5
c4975e854457c9f628aa386140f2fbcf
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SHA1
bec8be52e30c8b9c3305349ba81cb07d4d5afc9f
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SHA256
b7d231d5a9b1685b8fdcd0252d0ae5a6afec3969f5074ba6f1103b495deeb3a9
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SHA512
7dc51e640182cdf3fdbc3675d1b7a5a510b1a07755930af662b7cdee51a2e703721befef89bb0585213c086524753042755326b62204b821afde4e673331f7d6
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Q6:zCsanOtEvwDpjm
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001227e-11.dat CryptoLocker_rule2 behavioral1/memory/2984-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1320-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1320-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001227e-11.dat CryptoLocker_set1 behavioral1/memory/2984-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp CryptoLocker_set1 behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1320-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1320-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d00000001227e-11.dat UPX behavioral1/memory/2984-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp UPX behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1320-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1320-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1320 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2984 2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe -
resource yara_rule behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d00000001227e-11.dat upx behavioral1/memory/2984-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp upx behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1320-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1320-27-0x0000000000500000-0x0000000000510000-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 2984 wrote to memory of 1320 2984 2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe 28 PID 2984 wrote to memory of 1320 2984 2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe 28 PID 2984 wrote to memory of 1320 2984 2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe 28 PID 2984 wrote to memory of 1320 2984 2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_c4975e854457c9f628aa386140f2fbcf_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2984 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD56999ab76640afd6161238cb6f711e5ff
SHA17efb297da196375d9e44994db68d5c0bba7900b2
SHA2562935d0f458973c599023b3e16064499061738d905394b9a35685f4c7f1c4bb97
SHA5123651b3db01e8e574c575a0b6e599101d2c380630d5800b449b5d386822b761ed96da86cfd4460fb884cf42f3b22b42026dac786add3aa3d8ade5145da1e7fbef