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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
21/04/2024, 03:59
Behavioral task
behavioral1
Sample
2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe
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Size
101KB
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MD5
6d99728fdf2b082fba0c1fed976440d7
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SHA1
e08f8d5d79cc95b01dbad191a61f9f7835df54aa
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SHA256
a1b309982b6963ef940cba438ea9edb936659ff9c380e70682fd9dd4b1707729
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SHA512
bebf93f0c130adb8bbefc6e9aebc5a6734c057a7ba80b9a5e3f90b8be277aa9c5896f2beecabbcc85c224021b30cf501a781127d30d5c6f184572b3a7ab1b6d2
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBcP:AnBdOOtEvwDpj6zJ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000013ab9-15.dat CryptoLocker_rule2 behavioral1/memory/3020-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3060-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3060-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000013ab9-15.dat CryptoLocker_set1 behavioral1/memory/3020-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/3060-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/3060-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000b000000013ab9-15.dat UPX behavioral1/memory/3020-14-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/3060-18-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/3060-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3060 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3020 2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe -
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000b000000013ab9-15.dat upx behavioral1/memory/3020-14-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/3060-18-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/3060-27-0x0000000000500000-0x000000000050F000-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 3020 wrote to memory of 3060 3020 2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe 28 PID 3020 wrote to memory of 3060 3020 2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe 28 PID 3020 wrote to memory of 3060 3020 2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe 28 PID 3020 wrote to memory of 3060 3020 2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3060
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
102KB
MD53e5082967329d6341c7ae4451170c78c
SHA124ee1ee5f017c9b5726ab1b5e8dffe72cbde6a43
SHA256e9e5ee142d98ebeb9decd8bdddc3ee781c525cbe130f88e786470a487e2a7fc1
SHA5125ec0ae7f092497833dbfc40cb794b1c9c674d139c8104e65888e5d3342d19024ee25dd30ad2e686daec949cd4d10e9240797b5e0dceaea800d358b49fec55b35