Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
28/01/2024, 19:30
Behavioral task
behavioral1
Sample
2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe
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Size
63KB
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MD5
8cb96f18b27e598ac570cfcb0f9c53f4
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SHA1
efd1676f37195cf21702a9e0720324ea4901c67b
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SHA256
447b5085cd021434f14a0792f9cbfe3332feaf941a0f7b8c5faaded97f165d10
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SHA512
dd20bb448348737dc005b1027647c3b179ce44693b4d96c0362efc6d15eb308eb36a464c4c481032ada34e138967656b49b5f947261deb2d9536072ad8492e09
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoe:1nK6a+qdOOtEvwDpjM
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2372-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000015c33-11.dat CryptoLocker_rule2 behavioral1/memory/2372-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2372-13-0x0000000002270000-0x0000000002280000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3052-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/3052-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2372-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000015c33-11.dat CryptoLocker_set1 behavioral1/memory/2372-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2372-13-0x0000000002270000-0x0000000002280000-memory.dmp CryptoLocker_set1 behavioral1/memory/3052-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/3052-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2372-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x0009000000015c33-11.dat UPX behavioral1/memory/2372-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2372-13-0x0000000002270000-0x0000000002280000-memory.dmp UPX behavioral1/memory/3052-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/3052-26-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3052 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2372 2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe -
resource yara_rule behavioral1/memory/2372-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x0009000000015c33-11.dat upx behavioral1/memory/2372-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2372-13-0x0000000002270000-0x0000000002280000-memory.dmp upx behavioral1/memory/3052-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/3052-26-0x0000000000500000-0x000000000050F311-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 2372 wrote to memory of 3052 2372 2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe 28 PID 2372 wrote to memory of 3052 2372 2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe 28 PID 2372 wrote to memory of 3052 2372 2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe 28 PID 2372 wrote to memory of 3052 2372 2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2372 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD5f23d439987759c10a200e68898722b4b
SHA195b01bbb3849b5af51108f464312b434b0ec9926
SHA256295b16fe8718893c27cedef4cdf6c1b0ea8f482176832739d9633a030d05a882
SHA512c085d8ad243f6f1fde823aefa77bce5627f126c18b5b3d7864585a278d68b9d5996ad348d94d39c3c6afc26f5e4404cacb10c744350d4bbd7e33f5302f82f8b4