Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
12-02-2024 05:56
Behavioral task
behavioral1
Sample
2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe
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Size
33KB
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MD5
9e104fdc42e80948f855d7985660be4f
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SHA1
f49ba74a25f23357fa90f6afdd51e60dd9c2c897
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SHA256
6690dd2eb4f3a3bedf7e71b71f1d633f12c63ff4f7d648cfa00e564aac9c5a02
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SHA512
db8c51fc28ed19e1fedb5ab5ce5aecec3ecf0b854ebbdee798cfeaae7713e4081ed805a6454f8519c52a5ae38bb2b4c62c89410c936ddd2b329059182b4947fb
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SSDEEP
768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axW:qUmnpomddpMOtEvwDpjjaYas
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2268-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001225f-11.dat CryptoLocker_rule2 behavioral1/memory/2268-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1848-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2268-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001225f-11.dat CryptoLocker_set1 behavioral1/memory/2268-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1848-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2268-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000c00000001225f-11.dat UPX behavioral1/memory/2268-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1848-19-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1848 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2268 2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe -
resource yara_rule behavioral1/memory/2268-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000c00000001225f-11.dat upx behavioral1/memory/2268-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1848-19-0x0000000000500000-0x000000000050F000-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 2268 wrote to memory of 1848 2268 2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe 28 PID 2268 wrote to memory of 1848 2268 2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe 28 PID 2268 wrote to memory of 1848 2268 2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe 28 PID 2268 wrote to memory of 1848 2268 2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_9e104fdc42e80948f855d7985660be4f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2268 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1848
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
33KB
MD5a8bc7f09bc97f91fb7ee33e5e75da0c0
SHA1e6f9195b29d04ad983f42b288e5bace03a87367b
SHA256de93bdf408b6d9937b22217550e83e1c2699784210f52363f709f3456247122a
SHA512c82d3db946a4d981faae4f6d3f5bcc336421e1c640bb9fc8097a61957f320921194f9e7caa172d0011f7d9b5f3843d94ada479ee3aff98974da75a5c76867b46