Analysis
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max time kernel
133s -
max time network
143s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
28-04-2024 14:23
Behavioral task
behavioral1
Sample
2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe
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Size
76KB
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MD5
059593ed6dc6d1f598d6391f47fb327b
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SHA1
a24204f4039311ab81d7efac05cc6d81c3170a40
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SHA256
06dea97ed9e1711c1745b2191e9f6ee0b651441cc82110aafd32bd60736af6fa
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SHA512
ee99ac9bd907cade624b616dfea1921170c81c6c954611366fca57b1ba8e9164098f83a71087b04a6761cf05d6dd481e24d5b1f1bddc250f1fb479944a1dbe44
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUx5:T6a+rdOOtEvwDpjNtHP6
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000016d24-11.dat CryptoLocker_rule2 behavioral1/memory/2240-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2344-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2344-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000016d24-11.dat CryptoLocker_set1 behavioral1/memory/2240-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2344-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2344-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000016d24-11.dat UPX behavioral1/memory/2240-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2344-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2344-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2344 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2240 2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe -
resource yara_rule behavioral1/memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000016d24-11.dat upx behavioral1/memory/2240-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2344-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2344-26-0x0000000000500000-0x0000000000510000-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 2240 wrote to memory of 2344 2240 2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe 30 PID 2240 wrote to memory of 2344 2240 2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe 30 PID 2240 wrote to memory of 2344 2240 2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe 30 PID 2240 wrote to memory of 2344 2240 2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2344
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
77KB
MD5711a79931d4f2ef3b23a8c8b4e5f3c91
SHA1cb07e9e218d7247f9ba624d88116211a0649aa61
SHA256efce3a3c967d59285b9c1f5d99fd802414173db6805b27191e9c71dcb917bed9
SHA5129cc648453041eb71587bb4b5da3a3edcaf0bf27065a2294d189438a06a62e458427377a849d4e8e1966c476800a21e21f7438ba5445597ac1e6b668d68018ff0