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
27/05/2024, 22:46
Behavioral task
behavioral1
Sample
2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe
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Size
69KB
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MD5
1b04747509b21e95a24e7ed3d7599953
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SHA1
7ef652c3ac6f010d505e7ab3f28e9868204c45dd
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SHA256
0061721574c8d05fda93457898d3384c690bf245c14b6d4e03fb1513729b1cca
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SHA512
f02eab55eb37c7ea01eb3917639ffe7ee163bae538b24d5ca792584ea719ae55c5d3b4b5be46a4301a2f96989da6e1e857d9b299786972a06d4c873c2c758ea3
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SSDEEP
768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PD:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAD
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2172-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000013417-11.dat CryptoLocker_rule2 behavioral1/memory/2172-13-0x00000000022B0000-0x00000000022BF000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2356-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2172-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000013417-11.dat CryptoLocker_set1 behavioral1/memory/2172-13-0x00000000022B0000-0x00000000022BF000-memory.dmp CryptoLocker_set1 behavioral1/memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2356-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2172-1-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000b000000013417-11.dat UPX behavioral1/memory/2172-13-0x00000000022B0000-0x00000000022BF000-memory.dmp UPX behavioral1/memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2356-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2356 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2172 2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe -
resource yara_rule behavioral1/memory/2172-1-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000b000000013417-11.dat upx behavioral1/memory/2172-13-0x00000000022B0000-0x00000000022BF000-memory.dmp upx behavioral1/memory/2172-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2356-26-0x0000000000500000-0x000000000050F000-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 2356 2172 2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe 28 PID 2172 wrote to memory of 2356 2172 2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe 28 PID 2172 wrote to memory of 2356 2172 2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe 28 PID 2172 wrote to memory of 2356 2172 2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_1b04747509b21e95a24e7ed3d7599953_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_1b04747509b21e95a24e7ed3d7599953_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:2356
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD591cbf73f5a4f3a4672cb9137d19f6c47
SHA1358148b0162de299ed4a8e8586299739cd4fcc86
SHA25601acc68f9e2060b0af090a5551d71e628ce900024e70467d7a5aad2a887dcbe1
SHA512af98b1ecc8874925661362c9f702e76e5a71ae9cc817e8af8ae996cd6c909dc4686ffee335fbee14a32eb1f4592245e9e82628f31fc2b8dc72de8c13da5570fc