Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24-02-2024 18:14
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe
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Size
47KB
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MD5
e72a0ef66c27e126b8e75230c38d1d38
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SHA1
f48ee26cc161524f90167a0b0804fc734b930529
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SHA256
32fda8b49387b8f70a7ae7edd87cbc13c7a1e4d814c06c42f0247022f4bf2b08
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SHA512
61b7311f54804fb7400f5a8b0c34d6f66795aef08cf1f1b412cce3fcd393745532d47a95834b697987e66d33d17f6ae1b82a18906d394726f31d2e92e7343c4e
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SSDEEP
768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2p5:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ0
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2812-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2812-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014fe1-14.dat CryptoLocker_rule2 behavioral1/memory/2628-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2628-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2812-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2628-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2628-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2812-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2812-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000014fe1-14.dat UPX behavioral1/memory/2628-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2628-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2628 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2812 2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_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
description pid Process procid_target PID 2812 wrote to memory of 2628 2812 2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe 28 PID 2812 wrote to memory of 2628 2812 2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe 28 PID 2812 wrote to memory of 2628 2812 2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe 28 PID 2812 wrote to memory of 2628 2812 2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_e72a0ef66c27e126b8e75230c38d1d38_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2628
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD57ad1931ab091e8c67801781f49c37c9f
SHA1e1e6a5be747ab2f4af9e8ff257b0470c10b289ed
SHA25633e3fe34e9839e2c6d3491a11ae41fa86f6c35207ff3f8259b695e82a160eb27
SHA512e1c39e34e781472aec17a1467c36db28665230e77a8aeb7cd2ff31df419aa23e5625f71313d5686c92c97866f11117ad8c0bfbe0e74a52e22cb9219b31f94a0c