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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
25/01/2024, 01:29
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe
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Size
38KB
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MD5
688c63508a1a98d7ad4b131251613ff4
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SHA1
f02ff2facb3f86254d29c5d9522f0a52d661cb68
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SHA256
d9dbdde376caa5535945321a0b0a1dc9af082166b0165422a58c1564a4458f9f
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SHA512
39d37d3f425c3a7c1744d02de5fdda53f611e1c654afe5acb73b2884e84e213ba238c49c9c80fda021883ae3330a7c395df8a7162d13b294dbfb20f0eaf9ebfb
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SSDEEP
768:XS5nQJ24LR1bytOOtEvwDpj66BLtldJQB2:i5nkFGMOtEvwDpjn/JQ8
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2460-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001224c-11.dat CryptoLocker_rule2 behavioral1/memory/2780-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2780-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2460-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2780-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2780-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral1/memory/2460-8-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b00000001224c-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2780-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2780-26-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2780 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2460 2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe -
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 2460 wrote to memory of 2780 2460 2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe 28 PID 2460 wrote to memory of 2780 2460 2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe 28 PID 2460 wrote to memory of 2780 2460 2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe 28 PID 2460 wrote to memory of 2780 2460 2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_688c63508a1a98d7ad4b131251613ff4_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2460 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2780
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD599846a3d595bf7fa3c91de7840bbca78
SHA187a6a929565f416fb141bd7d77a9db62bb115e9b
SHA256c1b80fba9d84795ee095096a8dae7000c536c5f619199c55acc594ffcfe4166a
SHA512ee4409ef22557e15f3deca0c2079c4d03ca5d5d2f3b0069a6c3a4ddbd0b864a3ec61af1716a88fa131843a1a1ae2f9fe40c50cb130ad0a27f595d61a0b25a8cc