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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
12/06/2024, 19:46
Behavioral task
behavioral1
Sample
2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe
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Size
92KB
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MD5
af48c2f4cb7b12d35c45342023151cbe
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SHA1
d7c5790edcda0d87e8e5f4f82a7a2d8d83661964
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SHA256
99e5d97835a7f9fc7ea739c4fec811fe18a2f792a2fd9b356bd7533454bd3b8c
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SHA512
4855fe12b4baae3418f4d1f2588d6dd20de6b136ce3ae8b45984e3f80777bdce3f5614f030b87ed6d9e9ddf7c8a055d7ce0c2e1fdabc783093e3ef86d0ed1b42
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgdd2I:AnBdOOtEvwDpj6zn
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1156-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000500000000b309-11.dat CryptoLocker_rule2 behavioral1/memory/1156-12-0x0000000002880000-0x000000000288F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1156-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2676-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2676-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1156-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000500000000b309-11.dat CryptoLocker_set1 behavioral1/memory/1156-12-0x0000000002880000-0x000000000288F000-memory.dmp CryptoLocker_set1 behavioral1/memory/1156-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2676-19-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2676-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1156-1-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000500000000b309-11.dat UPX behavioral1/memory/1156-12-0x0000000002880000-0x000000000288F000-memory.dmp UPX behavioral1/memory/1156-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2676-19-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2676-28-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2676 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1156 2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe -
resource yara_rule behavioral1/memory/1156-1-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000500000000b309-11.dat upx behavioral1/memory/1156-12-0x0000000002880000-0x000000000288F000-memory.dmp upx behavioral1/memory/1156-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2676-19-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2676-28-0x0000000000500000-0x000000000050F000-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 1156 wrote to memory of 2676 1156 2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe 28 PID 1156 wrote to memory of 2676 1156 2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe 28 PID 1156 wrote to memory of 2676 1156 2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe 28 PID 1156 wrote to memory of 2676 1156 2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-12_af48c2f4cb7b12d35c45342023151cbe_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1156 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2676
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
92KB
MD5f4790979cfb69b8551dca9071efaf578
SHA107093ac7897939b1a9ba124a4f68d2bf79ee07e2
SHA256e7b661de4d1d91dfabd97e9d17ba3d764418050eb4b306f756a3d59dc4b90d18
SHA5125177925b1626291f756bf8e81550450e25b17a5d88eaab2cdc98995b71a86123c140f685b2ff64379c3c81348801c5f8d3bddfa6c535d519e4c6a80a2981d290