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Analysis
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max time kernel
149s -
max time network
138s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/03/2024, 18:48
Behavioral task
behavioral1
Sample
2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe
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Size
102KB
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MD5
639d2b810fcf9d3e4b0e394803680ea0
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SHA1
ebc6c7accde6e316e03a6cfc4acd3609c15d01b3
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SHA256
1c617070b59d3d78c544981a0130303e6acedf5b44e40dce6332a2a33cd0ce8f
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SHA512
722e3a6f291640e2cc1bab2f63cecb41435489688f2af46ffad9911d97b82e0d7583209097e2884d3c1b9cf470c9e5f89935a6ae7caf2a22685acd40528f2b5c
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviy69:AnBdOOtEvwDpj6zR
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2512-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012256-11.dat CryptoLocker_rule2 behavioral1/memory/2512-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1028-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1028-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2512-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000012256-11.dat CryptoLocker_set1 behavioral1/memory/2512-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1028-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1028-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2512-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000b000000012256-11.dat UPX behavioral1/memory/2512-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1028-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/1028-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1028 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2512 2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe -
resource yara_rule behavioral1/memory/2512-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000b000000012256-11.dat upx behavioral1/memory/2512-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1028-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/1028-26-0x0000000000500000-0x000000000050F000-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 2512 wrote to memory of 1028 2512 2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe 28 PID 2512 wrote to memory of 1028 2512 2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe 28 PID 2512 wrote to memory of 1028 2512 2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe 28 PID 2512 wrote to memory of 1028 2512 2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-11_639d2b810fcf9d3e4b0e394803680ea0_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2512 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1028
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
102KB
MD5803f3f645d937f45443a2e1f64380023
SHA1d30c73fab67563447b754cef8d39ce6aa0415a4a
SHA256208906a441e8d35d165e4f861c522faa20534f5136d130381ae99c29fa38ecfa
SHA512d8fd5c275afc9ffafa40e93f567d4be3a109e358bc04a3b5c785f64d1da9e4116c34c422d46fa673259688a37039983daf698e642cbef940b578f474f4b14f8a