Analysis
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max time kernel
149s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
10/06/2024, 21:43
Behavioral task
behavioral1
Sample
2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe
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Size
91KB
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MD5
f23d3106fdd4e6193c79d4b333731016
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SHA1
c4ab05f9b832711597a0cc54c91f851705372ee1
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SHA256
8b457ca6057494896c71260c426a73e4413867c0d63c11cb68d38b2da649698a
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SHA512
0b0fe4457dd922ef3ce199e334856b7bba84f7326bf98ff07b550061c3bd86a9408dcd12c82607ae5a5e8b6c03ff3ff6dc0f21dcf744a8af3924032842220ef1
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyuF8:n6a+1SEOtEvwDpjYYvQd2PW
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001445e-11.dat CryptoLocker_rule2 behavioral1/memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001445e-11.dat CryptoLocker_set1 behavioral1/memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3020-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c00000001445e-11.dat UPX behavioral1/memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3020-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3020 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2244 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe -
resource yara_rule behavioral1/memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c00000001445e-11.dat upx behavioral1/memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3020-27-0x0000000000500000-0x0000000000510000-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 2244 wrote to memory of 3020 2244 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe 28 PID 2244 wrote to memory of 3020 2244 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe 28 PID 2244 wrote to memory of 3020 2244 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe 28 PID 2244 wrote to memory of 3020 2244 2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2244 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3020
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
91KB
MD59e884791485b563d4e5d2c7a9050e57f
SHA167cc987d9b0f16503d94f0c5ed61457df793bb90
SHA2564db7708147ee9692141e86bd09d21f946ff1e28fec57f35545bbf8cb0e702b09
SHA5123a5e781af38af3ef5da1444990ff18188604a887c457b49402eaece459bb02343e1142159635fb233e9348b63c3ad6c5cb72ba03da551dddad03dd6c54ddac65