Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
23-05-2024 18:18
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe
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Size
32KB
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MD5
aef05547629d8939ab63e36bb5448b95
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SHA1
80a098926127c3e2f38e015e572dc18127bbe395
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SHA256
71a6af38b2abe51bc25645d8bb64bb7ffda6190b5f8f372a6d4f3020ab47e6d7
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SHA512
697da97facb35b70199e3755195d2be9f6c59681581219662d9d635b9c134b64f06e6c83bdb228e14fac7bc431548c00ed82efb9e19e6e8b37a15ca89043a660
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SSDEEP
384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGOKei:bG74zYcgT/Ekd0ryfjUei
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral1/memory/2068-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 \Users\Admin\AppData\Local\Temp\hasfj.exe CryptoLocker_rule2 behavioral1/memory/2068-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3000-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3000-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
Processes:
hasfj.exepid process 3000 hasfj.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exepid process 2068 2024-05-23_aef05547629d8939ab63e36bb5448b95_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
Processes:
2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exedescription pid process target process PID 2068 wrote to memory of 3000 2068 2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe hasfj.exe PID 2068 wrote to memory of 3000 2068 2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe hasfj.exe PID 2068 wrote to memory of 3000 2068 2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe hasfj.exe PID 2068 wrote to memory of 3000 2068 2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe hasfj.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_aef05547629d8939ab63e36bb5448b95_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:3000
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\hasfj.exeFilesize
32KB
MD5911a473e44de1758418d9082d589d0f0
SHA151d03b01831c1dc24afbb5045a58b20098ad4eae
SHA25673333b164a4c8efe0b7e2165637e21ac154b4fbf897134f0bd65c9bc51723aa3
SHA512377daf599e8af6e38b5997f7890600e8a54d38776849060203b40299bae1302fbbfbfd0311ad27c7d9a330bd5f011b7555c82bae30a6a91415f513bf05cd2130
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memory/2068-0-0x0000000008000000-0x000000000800A000-memory.dmpFilesize
40KB
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memory/2068-9-0x00000000004B0000-0x00000000004B6000-memory.dmpFilesize
24KB
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memory/2068-2-0x00000000004C0000-0x00000000004C6000-memory.dmpFilesize
24KB
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memory/2068-1-0x00000000004B0000-0x00000000004B6000-memory.dmpFilesize
24KB
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memory/2068-15-0x0000000008000000-0x000000000800A000-memory.dmpFilesize
40KB
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memory/3000-16-0x0000000008000000-0x000000000800A000-memory.dmpFilesize
40KB
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memory/3000-18-0x0000000000580000-0x0000000000586000-memory.dmpFilesize
24KB
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memory/3000-25-0x0000000000350000-0x0000000000356000-memory.dmpFilesize
24KB
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memory/3000-26-0x0000000008000000-0x000000000800A000-memory.dmpFilesize
40KB