Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
20-02-2024 09:33
Behavioral task
behavioral1
Sample
2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe
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Size
61KB
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MD5
68d8d05902f8eee7f44291ea80cdd968
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SHA1
052a8dbdaf7926d0acae8cb991b52ed82341ca68
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SHA256
65fbeef18cb58f8c8d74a141a1edc613b3ff26e817fa374341c843e72040daa8
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SHA512
1660914226d841f7c790c696c59490508af2d316281cd5531793537e0bf31843798d2ecefafb2a9b55d3942ace2a7b89579c227f6436a5150dc9a571bd22f7f6
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5aFr7YOzR8l/A:z6QFElP6n+gKmddpMOtEvwDpj9aYaFA8
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x00090000000120e1-11.dat CryptoLocker_rule2 behavioral1/memory/608-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1204-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1204-14-0x0000000002800000-0x0000000002810000-memory.dmp CryptoLocker_rule2 behavioral1/memory/608-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x00090000000120e1-11.dat CryptoLocker_set1 behavioral1/memory/608-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1204-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1204-14-0x0000000002800000-0x0000000002810000-memory.dmp CryptoLocker_set1 behavioral1/memory/608-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x00090000000120e1-11.dat UPX behavioral1/memory/608-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1204-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/608-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 608 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1204 2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe -
resource yara_rule behavioral1/memory/1204-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x00090000000120e1-11.dat upx behavioral1/memory/608-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1204-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/608-27-0x0000000000500000-0x0000000000510000-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 1204 wrote to memory of 608 1204 2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe 28 PID 1204 wrote to memory of 608 1204 2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe 28 PID 1204 wrote to memory of 608 1204 2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe 28 PID 1204 wrote to memory of 608 1204 2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-20_68d8d05902f8eee7f44291ea80cdd968_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1204 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:608
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD594ccff879673c80784473df036f221cd
SHA14d14dd32cc7248e6ca413df22b1bd9c09a7ac820
SHA2564e97dab1f399117dd1743d4dfcbb790b1d7e09fab98352e4d3ee757c20d59ca0
SHA5120c4a7400fd3fbf1c8d5cdecb8b484c58bfc287abb5a9b16612f4b37c1b36770ef6fb89186920758487a6e7d302d121525fddb4f2bf40d3eee411c2ef333218f2