Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
18-02-2024 18:00
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe
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Size
40KB
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MD5
a956815c6381dce1c944fd566011517f
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SHA1
9ad436d02fe31240760ab1c6a95d98dcfade494d
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SHA256
c50f18840b91a91e74ab8a94d5d5fe55a25adb2e11ddc55f58d3b1c528897966
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SHA512
eee54658e62bf6dee796d971314f412388e4801fe1b6e7ce02139d3e086f57f9767c1e3f6914e627ec1b795a7c2e11d62699532895299a3adcaabc9934448534
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtsC:6j+1NMOtEvwDpjrR2sC
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2064-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000001220d-11.dat CryptoLocker_rule2 behavioral1/memory/2064-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2680-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2064-13-0x00000000005A0000-0x00000000005AF000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2680-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2064-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a00000001220d-11.dat CryptoLocker_set1 behavioral1/memory/2064-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2680-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2064-13-0x00000000005A0000-0x00000000005AF000-memory.dmp CryptoLocker_set1 behavioral1/memory/2680-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 6 IoCs
resource yara_rule behavioral1/memory/2064-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000a00000001220d-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2064-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2680-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2064-13-0x00000000005A0000-0x00000000005AF000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2680-27-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2680 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2064 2024-02-18_a956815c6381dce1c944fd566011517f_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 2064 wrote to memory of 2680 2064 2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe 28 PID 2064 wrote to memory of 2680 2064 2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe 28 PID 2064 wrote to memory of 2680 2064 2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe 28 PID 2064 wrote to memory of 2680 2064 2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_a956815c6381dce1c944fd566011517f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2064 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2680
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD5a6874de6ff044cad478db0ed9ef399e2
SHA1c39e92fb6cf82a837c2b1f7861e666cfc82c5250
SHA256a449d1ea563d681f35097deeef8c326c8ffa865ce93477534901c772513a5e1d
SHA5124dd55e4f57ed18ff2c5640dfae31064dedd65c5b3bd7418098597efcf33e942051f9e23820d101ef4df880e0bf192491e9626b55daef3d27ce641f13ff51f70a