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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
25/05/2024, 21:26
Behavioral task
behavioral1
Sample
2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe
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Size
90KB
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MD5
50e4fe3073a1156b8721903c0663321f
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SHA1
47435cc78ca641f17687f96a13484e003836eb0f
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SHA256
451a95132d7da7aa3529276572a09d75af538bd21f30070d4f7dbd0a71e1f61b
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SHA512
a544451d7e2eaf6260a3e21164360b5e66be244d531448c9abff742680353e38fa52e0359d56257eadb31fd26651b8b5f960c81c9d95aa0fe4abf047c55ac1a2
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SSDEEP
1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyT:n6a+1SEOtEvwDpjYYvQd2PO
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1972-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000016176-11.dat CryptoLocker_rule2 behavioral1/memory/1972-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2212-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1972-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000016176-11.dat CryptoLocker_set1 behavioral1/memory/1972-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2212-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1972-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000016176-11.dat UPX behavioral1/memory/1972-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2212-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2212 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1972 2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe -
resource yara_rule behavioral1/memory/1972-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000016176-11.dat upx behavioral1/memory/1972-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2212-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2212-26-0x0000000000500000-0x0000000000510000-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 1972 wrote to memory of 2212 1972 2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe 28 PID 1972 wrote to memory of 2212 1972 2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe 28 PID 1972 wrote to memory of 2212 1972 2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe 28 PID 1972 wrote to memory of 2212 1972 2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1972 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2212
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
90KB
MD525384d6f4884a2d9548ebf70d04ad73f
SHA152364833ba6de6694a26308e5adafd8d9c2ded7c
SHA256f3f727190ec4e0eb7e8fb57632c876af948da13cf72e5acac8d25d0fe4278d5e
SHA512c1e9272352f0847baeadfc4f2b549f81a785c93006b178bad938f1e1590fc6f9c97a57de72b50b8cdbba01d2c89e49d47f721b9eacfdd766208be3397d2bb293