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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
26/04/2024, 04:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe
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Size
48KB
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MD5
635a4b7a6522727705bc276265093af1
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SHA1
40fc9e87e5eb3780eff14325426a7c02c0484719
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SHA256
264c74e0a84130f9990cd5f794fb323f630f2f761d87dc510d22e79203f37da7
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SHA512
3c4ceced6c5de789c9277f360298d38e0fe161e863fe2b6dcccafeed4352857a0eb1f92dfe52d42aa4b3a054737b4ba2f60380b00fa45cb31752ec07cb5570fe
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SSDEEP
768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2pK:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000014466-11.dat CryptoLocker_rule2 behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d000000014466-11.dat UPX behavioral1/memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2548-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2548 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1760 2024-04-26_635a4b7a6522727705bc276265093af1_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 1760 wrote to memory of 2548 1760 2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe 28 PID 1760 wrote to memory of 2548 1760 2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe 28 PID 1760 wrote to memory of 2548 1760 2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe 28 PID 1760 wrote to memory of 2548 1760 2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-26_635a4b7a6522727705bc276265093af1_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2548
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD50235785a191deb10e28272770a75aaa1
SHA1298bd71d52edcbafda19aa526e45eb7f0d089875
SHA2568a381ed729e8a79483160f5c66b60fe775ae772b9cbd9667a4ca8034c21f4bf2
SHA5126acdee5a80795fef83e93e29a6ea7dcea384aba37ad21a312fb2d6ddc232cb50ddc4e3993b645b141aa781217d96df46c81086e50d3804646893573bb76c7f7e