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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
23/02/2024, 16:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
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Size
41KB
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MD5
fb3d07fd5f7ba731c198a6253fa338be
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SHA1
e3ca3c09b430b18df8ef24f0f640dea2fd553d95
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SHA256
a2c7bb78b7210bef61e3af859d650054ccb7e32a322ebcbe62db303a0c48d239
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SHA512
b850b2bb3fe58955aa5d714d40a30a350481b710c17d56ab4b5a35bfa41a7ac1f79b391a422b95b31e3b8def7b7148d0569da72101dd5a29700f4a1fb1ac1512
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SSDEEP
768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMpheY:bc/y2lkF0+BeF
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000d000000012253-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2508 rewok.exe -
Loads dropped DLL 1 IoCs
pid Process 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_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 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe 2508 rewok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1656 wrote to memory of 2508 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe 28 PID 1656 wrote to memory of 2508 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe 28 PID 1656 wrote to memory of 2508 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe 28 PID 1656 wrote to memory of 2508 1656 2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1656 -
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:2508
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5a084a5ba6c751cb7c1a927370cb4a77e
SHA15833281843876ee7b0aaea17534701d3be137d98
SHA2567bfd08fc9cf8f727d637da96230c4c5281a1e00cf5c40ae019f03d705af39aac
SHA51200189224a2d9f13a788dd2fe9b0b1021b3df1803f726ae807d41cf5ec40a8f67d90ded87b2a7e7cbbda074b0609148b33cae818e221fc99f577edd4260882f59