Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14-06-2024 01:42
Behavioral task
behavioral1
Sample
2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe
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Size
41KB
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MD5
def904c13f6dd02ce4898ac7ec51b55a
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SHA1
07cd5cbfebd7c56c3e19756cfe73c6f1c5277b01
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SHA256
dacfb4603c583d34cc75b3edc8b37f038d4d80c137797b27a87a6d58c0c0103e
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SHA512
3d64a1fa12110baccc18c8ebea693aaf3f3a4ae0d4c14764e46ed5678fae79a17aedac044c717c38569f2302b72467438e14a0842fbff6840f6b54751f2593d3
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYj:qDdFJy3QMOtEvwDpjjWMl7TC
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral1/memory/3048-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 behavioral1/memory/3048-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2340-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2340-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral1/memory/3048-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 behavioral1/memory/3048-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2340-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2340-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
Processes:
resource yara_rule behavioral1/memory/3048-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX \Users\Admin\AppData\Local\Temp\asih.exe UPX behavioral1/memory/3048-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2340-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2340-28-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2340 asih.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exepid process 3048 2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe -
Processes:
resource yara_rule behavioral1/memory/3048-1-0x0000000000500000-0x0000000000510000-memory.dmp upx \Users\Admin\AppData\Local\Temp\asih.exe upx behavioral1/memory/3048-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2340-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2340-28-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exedescription pid process target process PID 3048 wrote to memory of 2340 3048 2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe asih.exe PID 3048 wrote to memory of 2340 3048 2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe asih.exe PID 3048 wrote to memory of 2340 3048 2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe asih.exe PID 3048 wrote to memory of 2340 3048 2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3048 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2340
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
41KB
MD580447e08c396579494a2439f90f29c1c
SHA13c7279e4352c906f01a4b423b0c1155504cae164
SHA25622315ceb40f00ccca0bfb35b59665fd61a65858cfa45ddd5d43db8e503fc21b8
SHA512e733b98530bdee869613a6b4e31ece859b2b2e57f77cadcb413e5f24fd6c43fc24025a5b44666a6d0199c8afa7ff4295ab530d98c12386bec9ff955b79b19075