Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
12-03-2024 07:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe
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Size
60KB
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MD5
d7a9aa11221e1bbbfe0047634caea53c
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SHA1
fca7bf31bde2adfcaef22999e17b8895dbbc8222
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SHA256
19718fa90ff6566c3a7c5ce865dfc7cb1e932b10bbc94a5e808b3470ae30d77b
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SHA512
79a30fe64d7bf31e7ea3eb20784a8def33362011f7177b7a24f940ac23d140e8aea0cb4874a94776025d3deb8c7b5b36a86e13a4d4b2516747907afef495e6dd
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614B:BbdDmjr+OtEvwDpjM2
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012265-11.dat CryptoLocker_rule2 behavioral1/memory/2180-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2452-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2452-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2180-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2452-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2452-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0008000000012265-11.dat UPX behavioral1/memory/2180-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2452-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2452-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2452 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2180 2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_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 2180 wrote to memory of 2452 2180 2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe 28 PID 2180 wrote to memory of 2452 2180 2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe 28 PID 2180 wrote to memory of 2452 2180 2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe 28 PID 2180 wrote to memory of 2452 2180 2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-12_d7a9aa11221e1bbbfe0047634caea53c_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2180 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2452
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD5a3b8bfb927a13e6a4368593a0eefdcce
SHA161de28b0e86a43e915b4cdb55be6811174331c27
SHA256034154fd8a51656634b8aa56cb960de55b9144a8a8e84f3103bf90ed355864e7
SHA51284f4385c9c423feee7721c2e7fc9300ac0dd8118ddfec746782e210dbc4b38808275436c8bef66f13616f4658b30c61b1faecf0d79e4c122a751569c33d666c8