Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 03:46
Behavioral task
behavioral1
Sample
2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe
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Size
60KB
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MD5
93b0fad6b89e09cc2b087c937888c0c9
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SHA1
f5946992015b34e7fc46321f9126606c9d085b81
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SHA256
6b6cef03f408419a390135fee09ad655a98688f5a5413c1e06383fb3ea3c9984
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SHA512
90806d0880fc26033ede1cfb1a27bbc309d92f6702e680963bc24bbd569bf850ed5b34dd5f9afb11d7aa5b74a812cc8fe3917f853bb427f9364ff34d3f875e3e
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pd:H6QFElP6n+gou9cvMOtEvwDpjCpVXT
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000014b70-11.dat CryptoLocker_rule2 behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000014b70-11.dat CryptoLocker_set1 behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000014b70-11.dat UPX behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2156 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1680 2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe -
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000014b70-11.dat upx behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2156-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2156-26-0x0000000000500000-0x0000000000510000-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 1680 wrote to memory of 2156 1680 2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe 28 PID 1680 wrote to memory of 2156 1680 2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe 28 PID 1680 wrote to memory of 2156 1680 2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe 28 PID 1680 wrote to memory of 2156 1680 2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_93b0fad6b89e09cc2b087c937888c0c9_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2156
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD504214341e49b6042867f06b59b990d87
SHA1782ac21c8827d6909942d96b27396d93872d5aa2
SHA256331f0e447e650d27ccff4f30439baa78d57e4b7598f8b67ef03e9ee4ac05b897
SHA512ab78fe58e7b1427b4caacd10155a34dcca1e26fea131eb18788f62f3c39f5928da2dcbdc5ea4022b253615a8f418215ba4f284e7ca5e793114eb4ddb16d71fbe