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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
29/05/2024, 06:51
Behavioral task
behavioral1
Sample
2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe
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Size
60KB
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MD5
c11c407ac30f2b089fe5fddc8ea8beb7
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SHA1
3a2ba2b5f494f0c5080c582aefc064ffdcd8f169
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SHA256
44f02259fc6644458354305ab08eff281d162e460bdc12411f589dd20b567adb
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SHA512
6fc53b715617a04f888cf87a8ef86cf6e15467207904e421fcc955adcc064f64e1d452b3e65385cd3467dbc6b07b2a4d7cfe80df2b9f7b54afdc7dc9f1284a10
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pINx:H6QFElP6n+gou9cvMOtEvwDpjCpVXiNx
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2024-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001226d-11.dat CryptoLocker_rule2 behavioral1/memory/2024-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2024-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001226d-11.dat CryptoLocker_set1 behavioral1/memory/2024-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2024-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c00000001226d-11.dat UPX behavioral1/memory/2024-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2168 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2024 2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe -
resource yara_rule behavioral1/memory/2024-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c00000001226d-11.dat upx behavioral1/memory/2024-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2168-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2168-26-0x0000000000500000-0x0000000000510000-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 2024 wrote to memory of 2168 2024 2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe 28 PID 2024 wrote to memory of 2168 2024 2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe 28 PID 2024 wrote to memory of 2168 2024 2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe 28 PID 2024 wrote to memory of 2168 2024 2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_c11c407ac30f2b089fe5fddc8ea8beb7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2168
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD53dce5386bfb175944036777c7e0dddd7
SHA1c93d8c808e0e9df8ca695027c0c02c60afb5b5e3
SHA256eae2fd113cbbc418fa423190e664fd7fb12238240928301956b9fedea10905a4
SHA512c91d5fd40a55685ba90e3772002cb2162bcfb55a5236606f269b998046da3bb61d488c8e03844240feb1dd10a2d1d6b6fb3c2f120c7a6c0a0a938b91233eaf14