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Analysis
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max time kernel
148s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
22/05/2024, 22:31
Behavioral task
behavioral1
Sample
2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe
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Size
79KB
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MD5
97d572bf1217b39e61c5475f4f996d87
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SHA1
72e15b7d4a54cc30d130e8adfe4a2f5a1891f68b
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SHA256
f7c3dfa12b25de93ef2855cbe051ce717681dd62f38c3b896a48215aa9e5ce6e
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SHA512
4cb390bfa82d2933b6d3d74ebfe113274d82149d73ff4b5c62437ec754229f6462d5b0f3fad1494adc07256ed9788772849916a4cff0a49a5f0f34e06246d095
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB1U:T6a+rdOOtEvwDpjNtHP/
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1284-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014e3d-11.dat CryptoLocker_rule2 behavioral1/memory/2568-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1284-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2568-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1284-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000014e3d-11.dat CryptoLocker_set1 behavioral1/memory/2568-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1284-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2568-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1284-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000014e3d-11.dat UPX behavioral1/memory/2568-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1284-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2568-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2568 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1284 2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe -
resource yara_rule behavioral1/memory/1284-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000014e3d-11.dat upx behavioral1/memory/2568-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1284-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2568-26-0x0000000000500000-0x0000000000510000-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 1284 wrote to memory of 2568 1284 2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe 28 PID 1284 wrote to memory of 2568 1284 2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe 28 PID 1284 wrote to memory of 2568 1284 2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe 28 PID 1284 wrote to memory of 2568 1284 2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-22_97d572bf1217b39e61c5475f4f996d87_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1284 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2568
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
79KB
MD5663f27d597a89ae19da26187e293e0fb
SHA1ee84b5d53ef9f59f6125f93b2717a6c69a16b131
SHA25668ec8d1e335189635c97d4bc988ed1f8daca28afcac00548d46dfb851e12dc64
SHA512fd562ab9e26c2cb9aaba7954ef318789a0a541d188c8af2950d42c2bff9a7ecece95e9389d430d54bd652df4cd31a73efdc0e0007912e59c4c205223900d9640