Analysis
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max time kernel
148s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
13-06-2024 03:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe
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Size
49KB
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MD5
3fd61b31baa1af575b0a5ad9d014cda5
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SHA1
97cdede891cd87abfb8fc7c681fdba2a87794c17
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SHA256
439758450f01d706be42f700251f74cf7d9afa81282c6c81a734cea6e0b2f8b4
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SHA512
c40314de5f4234eb3c952655b6c37b9bcc975f61c07ee91a9f684c98003c43511d44569fc9b93a47a73ecf5fac9f170cbcf9379cbb5ba8cb9ceafc84c3075f84
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SSDEEP
768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcc1o:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfL
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1152-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000012281-11.dat CryptoLocker_rule2 behavioral1/memory/2144-16-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1152-14-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2144-26-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1152-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000012281-11.dat CryptoLocker_set1 behavioral1/memory/2144-16-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral1/memory/1152-14-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral1/memory/2144-26-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
pid Process 2144 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1152 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_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 1152 wrote to memory of 2144 1152 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe 28 PID 1152 wrote to memory of 2144 1152 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe 28 PID 1152 wrote to memory of 2144 1152 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe 28 PID 1152 wrote to memory of 2144 1152 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2144
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD54690cce6e4a9aaf1c6619ecdac12dd99
SHA1fd4e5402de2d97fe2c8a185f18760a9b398e070e
SHA25656df8b1101eb19da8fc7afeb732c99dd16b982c54332819e8db142861a7fa577
SHA51276d51a0e39cde24aef3622e4fe2a48dd6025fc6f33adfe35591de6e22d7acea3070a91112f8287115db20e8278c6a8c6e5767aaedc6636d43bfb12b708013f00