Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
12-02-2024 20:15
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe
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Size
385KB
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MD5
b3e06f54bdf622de6999cf91c6bd6e11
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SHA1
727c877de245988c78a3226e262b8fb165475d06
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SHA256
69760d0761dd05987d56f54740e1d3748c3f4865b0668e665096b178f42c6b4b
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SHA512
d5981c50f155ade97d7f92a99af8f010c755eaad03f253801e519a5e62ceb0ac99c48281731c1247a5839edc342eb6eaeb77bf7505dfd7a15c10570f0cea4e01
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SSDEEP
6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXs:nnOflT/ZFIjBz3xjTxynGUOUhXs
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\hasfj.exe CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
Processes:
hasfj.exepid process 2644 hasfj.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exepid process 2084 2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_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:
2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exedescription pid process target process PID 2084 wrote to memory of 2644 2084 2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe hasfj.exe PID 2084 wrote to memory of 2644 2084 2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe hasfj.exe PID 2084 wrote to memory of 2644 2084 2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe hasfj.exe PID 2084 wrote to memory of 2644 2084 2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe hasfj.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_b3e06f54bdf622de6999cf91c6bd6e11_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2644
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
385KB
MD5f5f81cf4fb4e5a3910ffbf5da48ef2b4
SHA12c9581e5f591b6f288c23f916910a8e21cd4b0ad
SHA256b6842b375ce9f22e0d37e99ddd31ee8786c4337add2c1ac417e2c74e9b2c9b86
SHA51229f47c62f560dfcea895f5e8f8f9a963d62460573a90d6d0231d19291f2cdfe4df5119fa16d95314e0bd209823e11419d6107733d8c54ce44ca5e5f014f35738