Analysis
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max time kernel
150s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05-06-2024 03:39
Behavioral task
behavioral1
Sample
2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe
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Size
71KB
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MD5
775fc36ebbfcabd372f901b6951327d2
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SHA1
3f0b48235cad2d474c1971aa6d379ba86d057611
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SHA256
40f25cb7cacedea1d0f33b0ed2fbf0142fcce0dcc9dce855f2c53d29ed9aba83
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SHA512
3d989162151a4c55bcc5f30d7f8063d1e08055026becb49afc6e324ebb1d6c8910f3a9aa7a237ba2fdedd9a4c7a8cc640a236dcdbaac334d54a3c7ed105082a5
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs99F:C4Q2c94OtEvwDpj4H8zq
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000016d24-11.dat CryptoLocker_rule2 behavioral1/memory/2356-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2336-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2356-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2336-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2356-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000016d24-11.dat UPX behavioral1/memory/2356-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2336-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2356-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2356 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2336 2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe -
resource yara_rule behavioral1/memory/2336-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000016d24-11.dat upx behavioral1/memory/2356-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2336-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2356-27-0x0000000000500000-0x0000000000510000-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 2336 wrote to memory of 2356 2336 2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe 30 PID 2336 wrote to memory of 2356 2336 2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe 30 PID 2336 wrote to memory of 2356 2336 2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe 30 PID 2336 wrote to memory of 2356 2336 2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-05_775fc36ebbfcabd372f901b6951327d2_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2356
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD5abff060008dae2a26225df4ad5e15232
SHA195017afa1f685e068578a8053075b97efc9f40b8
SHA2569463551adfd6ccfef7687d9654ccb4c8eaa8eaadf788c7ae4b65cd4046af46f5
SHA51225a115851ea9423100f66a78aed645160456d5c297c39e3e8fb5eb5eb3e3e553344014b8e0b6ff41580efa3e9e6f58e8acc501b43c11df126b51f69a4101b527