Analysis
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max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 15:46
Behavioral task
behavioral1
Sample
2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe
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Size
65KB
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MD5
c8c8162a096279abc7df5c88b31fd72c
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SHA1
e29a12445a5a23442c2bc2ff04cab44d620eefb8
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SHA256
2b7c9f45abdd956c02d5fd9beca255999faac5e83abcf53f6774bc992b639583
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SHA512
cc26cf89135b560081312d18624b2b1c9af00e0dc0eccba83f4da3dc4236cf225ad7949349dabd58fc0a3608c253438ccb2462af0b61bd8cf220c9c1754e741b
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6UAXXc:1nK6a+qdOOtEvwDpjs
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1684-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000013309-11.dat CryptoLocker_rule2 behavioral1/memory/1684-13-0x00000000004C0000-0x00000000004D0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1208-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1684-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1208-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1684-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000013309-11.dat CryptoLocker_set1 behavioral1/memory/1684-13-0x00000000004C0000-0x00000000004D0000-memory.dmp CryptoLocker_set1 behavioral1/memory/1208-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1684-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1208-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1684-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000d000000013309-11.dat UPX behavioral1/memory/1684-13-0x00000000004C0000-0x00000000004D0000-memory.dmp UPX behavioral1/memory/1208-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1684-16-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1208-27-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1208 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1684 2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe -
resource yara_rule behavioral1/memory/1684-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000d000000013309-11.dat upx behavioral1/memory/1684-13-0x00000000004C0000-0x00000000004D0000-memory.dmp upx behavioral1/memory/1208-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1684-16-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1208-27-0x0000000000500000-0x000000000050F311-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 1684 wrote to memory of 1208 1684 2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe 28 PID 1684 wrote to memory of 1208 1684 2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe 28 PID 1684 wrote to memory of 1208 1684 2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe 28 PID 1684 wrote to memory of 1208 1684 2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_c8c8162a096279abc7df5c88b31fd72c_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1684 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1208
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
66KB
MD5503bd24f1a97db9b32f9a7cd85cea44e
SHA1a1a85a39c5625167fc368740c0eb1e64fec0e80f
SHA2564629857352d22a7ce37e8d61412b8a1f176e254957767fbf31ffd83ec9bdbe2b
SHA5124e0a09d0deeae3b2ca8011a7011d9ccea5eb43caa56ec6108f4b0c283d210ed8141ab52c345e4ba3151cc877b0b366a5c10e8adabefdf614ea47d430f6692099