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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
21/02/2024, 14:57
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe
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Size
68KB
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MD5
d39f7673a1b0ef45b90648c9dd5e12fe
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SHA1
0019664fa9a89706378b64f9b2d9486edee739e1
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SHA256
86949b3cebbb661f11a3b354b7df6aa8558995b4640e850464f61b9db45594a3
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SHA512
dfb8865d6bbe38e0b894545c35090543fc91d0b622d1e8a4d18935fb68bf52473b1a1beb3bec16022ec5055dcd8946937b549c92fe42d582b704ed5381c42e20
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SSDEEP
1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUsn:DW60sllyWOtEvwDpjwF85W
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012260-16.dat CryptoLocker_rule2 behavioral1/memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2676-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012260-16.dat CryptoLocker_set1 behavioral1/memory/2732-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral1/memory/2676-15-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2732 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2676 2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_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 2676 wrote to memory of 2732 2676 2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe 28 PID 2676 wrote to memory of 2732 2676 2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe 28 PID 2676 wrote to memory of 2732 2676 2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe 28 PID 2676 wrote to memory of 2732 2676 2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-21_d39f7673a1b0ef45b90648c9dd5e12fe_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2676 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2732
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD558c333ffbc44067581e318b3114bc623
SHA13545470f25d1e15315c636ca7d5515b803ab3337
SHA256721ff8133d61a75e513fc4b803495efdb9242d414bbd137ca2e730a15154211c
SHA512effd8fc3676272857dc54afdbb68e9f65b844af4a58408248cc04652f27e5c2380ebd4ed51061cd06a0918826e8ecb110508d49e333ffab787a29c54095e9183