Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
03-05-2024 23:25
Behavioral task
behavioral1
Sample
2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe
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Size
68KB
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MD5
47e39dcd8f8faf984e1a796b42828c32
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SHA1
6ef05c6f057e82221196ffe28b11c718bb75c4f0
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SHA256
b418eb6491d9e91578603bd5999e9b353534548cfe54834e45428b703e6e9cba
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SHA512
1596f06c4a4247d066e785119cc882efd893ba2cfabb5f5c4bb07c0f25df6a4d9b623e2a1de2c6bf9245782129d73bb010bf431ed765c431c322d4017e7ccd01
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SSDEEP
768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PL:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAL
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001449a-11.dat CryptoLocker_rule2 behavioral1/memory/1740-13-0x0000000002270000-0x000000000227F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2508-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001449a-11.dat CryptoLocker_set1 behavioral1/memory/1740-13-0x0000000002270000-0x000000000227F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2508-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d00000001449a-11.dat UPX behavioral1/memory/1740-13-0x0000000002270000-0x000000000227F000-memory.dmp UPX behavioral1/memory/2508-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2508 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1740 2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe -
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d00000001449a-11.dat upx behavioral1/memory/1740-13-0x0000000002270000-0x000000000227F000-memory.dmp upx behavioral1/memory/2508-26-0x0000000000500000-0x000000000050F000-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 1740 wrote to memory of 2508 1740 2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe 28 PID 1740 wrote to memory of 2508 1740 2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe 28 PID 1740 wrote to memory of 2508 1740 2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe 28 PID 1740 wrote to memory of 2508 1740 2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-03_47e39dcd8f8faf984e1a796b42828c32_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2508
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD5ee0461f170ab10e9ba5d399b90306ad9
SHA1cb18111742505330eeb3a63b4aba6f0815e393f1
SHA2562acbf8a77a671506820260170b9cd97a9733c59e8f4e0f5c5819a34d9b5ddaf2
SHA5122de15b1c859c4d8b8be6e57ba034f64b395c994e8f47306960d6727850a0e147884f1695ac07f07af066303de24dae419791f36b130ada6a40ef7681f5a9aa5c