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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
02/02/2024, 02:40
Behavioral task
behavioral1
Sample
2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe
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Size
55KB
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MD5
db38518b258229325782b2050162ab76
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SHA1
a2eef1e98fca6139a059c5bf3c865aff47601ea3
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SHA256
3a0808cc4350d94bf2f8be14ec4639ea64635af171ec650e6839fceb44780085
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SHA512
8cf20066d390c493c10d30b65924c31ae090991ee0d47bb7cca29257db5800e9af8b8f5baa03513b766a6b0f8f834ed389db51204d1db5f4ed8ca6d203d84c49
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax84uf:z6QFElP6n+gKmddpMOtEvwDpj9aYaO
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000014120-11.dat CryptoLocker_rule2 behavioral1/memory/2184-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1852-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1852-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000014120-11.dat CryptoLocker_set1 behavioral1/memory/2184-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1852-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1852-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000014120-11.dat UPX behavioral1/memory/2184-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1852-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1852-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1852 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2184 2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe -
resource yara_rule behavioral1/memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000014120-11.dat upx behavioral1/memory/2184-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1852-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1852-26-0x0000000000500000-0x0000000000510000-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 2184 wrote to memory of 1852 2184 2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe 28 PID 2184 wrote to memory of 1852 2184 2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe 28 PID 2184 wrote to memory of 1852 2184 2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe 28 PID 2184 wrote to memory of 1852 2184 2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2184 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1852
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
55KB
MD52852ba609d42df29d5601f9071dd13fe
SHA14c9490e28f2f7201b4e10996d6008071fe9a1ee5
SHA25642d2a9d3c1463ae1f7ac21b7b2124ab370a904b487dc9d9e872de73f867d6733
SHA512bb6e5adfd85632209591bd79bd2f066db4bbaca58e9ab38cb6970cf665d34b661afd359436a76f8633921f0fded381fa9a021994ba2ed16c0866c4b7644e8b11