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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
20/05/2024, 06:35
Behavioral task
behavioral1
Sample
2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe
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Size
52KB
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MD5
4f2f7c79ad5317e16f18d2bde3ee64bf
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SHA1
53178e6f019b4d0d38b92cc2ce33ee7394dbc5a0
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SHA256
fa1cb6e51aef9557496cd1cdfd43dc0f414dd356f68cb45788e49d4de0ed5245
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SHA512
59e2dce81dbc81d3f115298f4dc3cb05163d6b5e5d4bc62d45d41beef676688dee408174c161fddc348bd32f087af791caeb3970383ddca7b712beaad44a84be
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SSDEEP
768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOO:bODOw9acifAoc+vB
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2196-0-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015ca5-11.dat CryptoLocker_rule2 behavioral1/memory/2196-15-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2532-16-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2532-26-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2196-0-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/files/0x000b000000015ca5-11.dat UPX behavioral1/memory/2196-15-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/memory/2532-16-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/memory/2532-26-0x0000000008000000-0x000000000800F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2532 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 2196 2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe -
resource yara_rule behavioral1/memory/2196-0-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/files/0x000b000000015ca5-11.dat upx behavioral1/memory/2196-15-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/memory/2532-16-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/memory/2532-26-0x0000000008000000-0x000000000800F000-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 2196 wrote to memory of 2532 2196 2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe 28 PID 2196 wrote to memory of 2532 2196 2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe 28 PID 2196 wrote to memory of 2532 2196 2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe 28 PID 2196 wrote to memory of 2532 2196 2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-20_4f2f7c79ad5317e16f18d2bde3ee64bf_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2196 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2532
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
52KB
MD50caa521bd794e19e0f935571661c62db
SHA14d9b34fd0e0df5a01d0067c3185bb31db4c709e7
SHA2560181b70b1538e988ea1969ae7c6f3b4fb8c4002fa3ff60ba6a9dad412b56a96c
SHA512d8c2cc2e7d325ba3d9acd4f3d495490ee31b44e06d37ada6cf1df2aac72db28d2d7c1d1681e0f591d480a64f3771e8e6f591ec5e86a882e855d2a43a62e68358