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Analysis
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max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
31/05/2024, 08:22
Behavioral task
behavioral1
Sample
2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe
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Size
89KB
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MD5
13be1be18f0c5c065b2b8e75463dee71
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SHA1
237eb6ba2579712d64ffdabf59afcee58528f15a
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SHA256
1fb1dc47c8c61faac20ade91fc6a2e17daaa39b83c8cac0681ab2aaac4b70103
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SHA512
8319166687ce66e54365b87c6b9c0c5e59603cc1cf90bf3ba72c5173abff30d91617b86eee1d6de83e3a3b534fab83b02d8625599b362ac18854f4bb73ff628f
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgQd:AnBdOOtEvwDpj6zK
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2172-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000153cf-11.dat CryptoLocker_rule2 behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2216-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2172-8-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d0000000153cf-11.dat CryptoLocker_set1 behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2216-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2172-8-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000d0000000153cf-11.dat UPX behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2216-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2216 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2172 2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe -
resource yara_rule behavioral1/memory/2172-8-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000d0000000153cf-11.dat upx behavioral1/memory/2216-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2216-26-0x0000000000500000-0x000000000050F000-memory.dmp upx -
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 2172 wrote to memory of 2216 2172 2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe 28 PID 2172 wrote to memory of 2216 2172 2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe 28 PID 2172 wrote to memory of 2216 2172 2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe 28 PID 2172 wrote to memory of 2216 2172 2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-31_13be1be18f0c5c065b2b8e75463dee71_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2216
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
89KB
MD5ef31fd8d022dbb79d4da1cf122ff8b3f
SHA14f9142a235155c613125ba8d58f9a55dcb96a004
SHA256898521847f868cf46939f9df05ad907ffd15fcb5f3ac8fb4a4b99b830fc872fb
SHA512015c458a9dfa834461b07743e5e9c67646c9aa1b82843ca702cccf600081be05bfa0f62d6c6c63eb6425df764fde13dd4e17aa245e5360fcb5570237a5d7f072