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Analysis
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max time kernel
138s -
max time network
140s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
06/04/2024, 06:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe
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Size
42KB
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MD5
d328fea08aad7ad1f1f060ba1edef1d9
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SHA1
42d0b41785f436c75b01c478729b647214805fd8
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SHA256
c6da462903bb49df77d3d52f08c513ea6b3b3c71c24f41c7376174c235436f82
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SHA512
aeb1ce2bc8e07efd5d08f045a348b736e9aa9c065a64f163d46ad396c7118a4206ea2aa2873718a906c3991814385651ed89dbe13482aa0401dafb4483c1a0bc
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SSDEEP
768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5f6:m5nkFNMOtEvwDpjG8hhXj5f6
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2932-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2932-14-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012267-11.dat CryptoLocker_rule2 behavioral1/memory/2524-18-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2524-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2932-14-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/2524-18-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/2524-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2932-0-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2932-14-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b000000012267-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2524-18-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2524-27-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2524 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2932 2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_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 2932 wrote to memory of 2524 2932 2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe 28 PID 2932 wrote to memory of 2524 2932 2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe 28 PID 2932 wrote to memory of 2524 2932 2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe 28 PID 2932 wrote to memory of 2524 2932 2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2932 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2524
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5a844b9f71bee1cec4c57cb31ad13c999
SHA1dfd86e4e0396bb4f9740f7d88b3f6f7abdb1434e
SHA25645469b3dd250cb89a1bf2732c1242f8b5b6d704d1172c8dc18cb91d4680e38f1
SHA51290649bbc822f6f7415cb731b9a9d0d7d1197625f37cf21c517c39085b1574fe3817169027eb2747c51545cdeac923dcb418b9720e6edb65797351279d162ae4f