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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
01/06/2024, 03:53
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe
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Size
54KB
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MD5
b7ce7f1ffc66ba2ee35d2413343609fc
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SHA1
50b1a705b3c1fea6e3fc77a44b7f6587775fd7da
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SHA256
9deb3c9c52a859d3d793284de3f6de383f07c097abf19bc82379df1ca31b6c86
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SHA512
a93b9c2c7d24277cc2032494aa5dc8849d4d26c06a9ce8813fd3c17026495ba98837467a4b39657688a3c732bbb71ec158d424e44c7ad7bacfceb4c7cf0e5137
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SSDEEP
768:b7o/2n1TCraU6GD1a4Xcn62tH/1/Lp17zJIfeVEuUr6rB:bc/y2lm6iH/NLp17zrV9dB
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000c00000001432c-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2180 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of UnmapMainImage 2 IoCs
pid Process 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe 2180 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2336 wrote to memory of 2180 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe 28 PID 2336 wrote to memory of 2180 2336 2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_b7ce7f1ffc66ba2ee35d2413343609fc_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2180
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD5f34b067099da5fd63c803a44602d0cbf
SHA17f0bca70c45ca6083b4912dd8aa4e3d670d380b6
SHA256e043d72c624878ceb5d0f98b399695249b52140a6792c2df0a5a01e696d1691d
SHA5127aea4768dbbc0f2bf0903a81830c777dd592f4d76f7fcfe9dca4814115d597f27ebf5f062a15eaf153d7208e19ffdcc655d9eece4e4b1e16c277aa06e654faae