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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24/02/2024, 09:43
Behavioral task
behavioral1
Sample
2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe
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Size
117KB
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MD5
97d423bfc5d26687fd06f11c68eb3147
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SHA1
0c03e5529c89b50839f15e8a6274bc989bc8df5b
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SHA256
6397b07471490f59607f2679626dba6561753e93eb263c69a3b17a30ae2f8adb
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SHA512
06bb65d6f1c592fc7d84bc3a114004244c1be7e2be833937904417104ccd68dff530c38dbbeb4815e834e44aa518dbe4e7e7fd0dbaa2f225f8905a5c40bb55f3
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SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01QaA:z6a+CdOOtEvwDpjczW
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012241-11.dat CryptoLocker_rule2 behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012241-11.dat CryptoLocker_set1 behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012241-11.dat UPX behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2476 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2168 2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe -
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012241-11.dat upx behavioral1/memory/2168-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2476-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2476-26-0x0000000000500000-0x0000000000510000-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 2168 wrote to memory of 2476 2168 2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_97d423bfc5d26687fd06f11c68eb3147_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
117KB
MD5d8767e5fd3eb5cc4470351078cfabf33
SHA19f9abd32eca3e2eeba0eda3d9eb2433ba0d749ff
SHA2564bae09e1856d1ae2e159c1f7796685dcfeb0e777829b76a3b1b4471836f60780
SHA5121e4a5b7d04f0ed03b295fed7de6395b4b80c4a0fde4a149716bc616ca00c8419c85a6cfda10ae7e111a39147d8378a32a3405fee5d908b8a54a72a86c900c8a0