Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
06/06/2024, 20:33
Behavioral task
behavioral1
Sample
2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe
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Size
91KB
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MD5
64f865ebb668ea62169180a00348b5da
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SHA1
72f41cf764f58497f687df710181aa89f2ac279b
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SHA256
adad6176dd4dd8cdd816d166d961893c177bb027fb88ec44a3655fde5ffb38fb
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SHA512
b5f01240076d0f957865e283412be1b4b33e9f1900c143b3981e6e1efb5eaae80459d12f7f686ad09fd3ee0685d46d6e351275e68e1a7e1617f64f7a96d0d4c1
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA/yU:n6a+1SEOtEvwDpjYYvQd2P0
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1644-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000012280-11.dat CryptoLocker_rule2 behavioral1/memory/1644-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1644-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000012280-11.dat CryptoLocker_set1 behavioral1/memory/1644-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1644-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000012280-11.dat UPX behavioral1/memory/1644-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2984 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1644 2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe -
resource yara_rule behavioral1/memory/1644-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000012280-11.dat upx behavioral1/memory/1644-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2984-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2984-26-0x0000000000500000-0x0000000000510000-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 1644 wrote to memory of 2984 1644 2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe 28 PID 1644 wrote to memory of 2984 1644 2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe 28 PID 1644 wrote to memory of 2984 1644 2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe 28 PID 1644 wrote to memory of 2984 1644 2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_64f865ebb668ea62169180a00348b5da_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2984
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
91KB
MD57bd7b80d3645adf76abca4bef2fd4ed3
SHA1215020a608b3772ff72eb893135fff693d1919f7
SHA2560af71c04e5c7e634953933e40559f22162cb167661f82d878fc638652abb39e5
SHA51240494ca15e7da91970258038e39f2beb78e3949534438b1e884809cd896920410fdbf24a0478bc9e1d59b7fcd4bba8d1dab99480e6c6bbcb78f51a78c9df5228