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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
15/06/2024, 11:27
Behavioral task
behavioral1
Sample
2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe
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Size
76KB
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MD5
4917b04e5b35abb6a0c881fea3af9561
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SHA1
66b1ee7dd0d4a17a8ba02ca835aad54b01f3f05d
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SHA256
61b9e13228ee69d109af0ae977549469061176b1710a70dcc7bd1a912522e785
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SHA512
429f7ec6f7437299eff27a8744b906c5239e21e0f8fd216fffb51f2a573e1a2cd8cf1ae1e993bd072f765590a15d8312cb0dd31c66742bdb1205a26eaa8f47f4
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81Gj:1nK6a+qdOOtEvwDpjC
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d000000013a84-11.dat CryptoLocker_rule2 behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d000000013a84-11.dat CryptoLocker_set1 behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000d000000013a84-11.dat UPX behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2332 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1704 2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe -
resource yara_rule behavioral1/memory/1704-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000d000000013a84-11.dat upx behavioral1/memory/2332-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1704-16-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2332-26-0x0000000000500000-0x000000000050F311-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 1704 wrote to memory of 2332 1704 2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe 28 PID 1704 wrote to memory of 2332 1704 2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe 28 PID 1704 wrote to memory of 2332 1704 2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe 28 PID 1704 wrote to memory of 2332 1704 2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-15_4917b04e5b35abb6a0c881fea3af9561_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2332
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
76KB
MD5d67f70a64a7715053642a26612820e03
SHA170d461dd07d606ecbddd1b0cd7e2da441669e8fb
SHA256354fcba1d68a87be5e55daaa7fb769b7de5d52b82bf5a045328fbcdf90042095
SHA51280b262fd70cb7821c6c2dc9a1d1fc807bb4b8e6167ccdba53400d399db6bee33a60d5228e9ad499622d6677c7aed6d1c8ab5e93452d480bab3162bbe80835ba9