Analysis
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max time kernel
150s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
30/05/2024, 01:23
Behavioral task
behavioral1
Sample
2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe
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Size
72KB
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MD5
05b2ffadf68d50b9a2691d7c74b0781a
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SHA1
ced17c1e3f719c03aae7a14a20d8ac58402fe0d0
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SHA256
d43d6ffdf53d4871ad07fc84417d26b109551828335ca845fe970a9ffbb53696
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SHA512
3d5a8530f400b014bd4d598562f8947684845d4980d6f5a82690a8dd027a46b5b7189791645476377aa973bddd222a53d3dce2e81e46e11bf82d5481d762056f
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97x2:C4Q2c94OtEvwDpj4H8zR
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2288-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000015c23-11.dat CryptoLocker_rule2 behavioral1/memory/2288-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/940-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2288-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/940-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2288-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000015c23-11.dat UPX behavioral1/memory/2288-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/940-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 940 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2288 2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe -
resource yara_rule behavioral1/memory/2288-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000015c23-11.dat upx behavioral1/memory/2288-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/940-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/940-27-0x0000000000500000-0x0000000000510000-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 2288 wrote to memory of 940 2288 2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe 28 PID 2288 wrote to memory of 940 2288 2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe 28 PID 2288 wrote to memory of 940 2288 2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe 28 PID 2288 wrote to memory of 940 2288 2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_05b2ffadf68d50b9a2691d7c74b0781a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2288 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
72KB
MD5b4ce90653647fbf96afa86519366f66c
SHA18ba4736f6c6615eb22e8d35b9d8554c2cb0c4bf5
SHA25615be031476f39cebff4140b5388bd3b8a895edec641e0268057b68d3f839d1b2
SHA51283ebd47bd4dc3226ae21e11ee9aaeaa6c6c028d8abef949651aa731c5f9b220f7c5fec641de330eec9362ab63b06ddffde480d19459cd707e70f602d731b11ff