Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
19-02-2024 11:52
Behavioral task
behavioral1
Sample
2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe
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Size
62KB
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MD5
b4dffb050cc6ff97fbc72e618fa70ad7
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SHA1
b8dd7c4d366656a34eff0e5de76e4053d223f74b
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SHA256
f8a26bd30ddb718dba4716263737a16bf05759fc8c7b821144d6fd544851d852
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SHA512
02d598b8feb3e7debc65515f9bab61919fe65391cae82fb97dc2e3a913ab4fe75608983c3c5b6f056421865e42ccd45c9bf14528485ff39414c75a5f54d5ba92
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVG:zj+soPSMOtEvwDpj4kpmeLmng
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2800-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012251-11.dat CryptoLocker_rule2 behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2800-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012251-11.dat CryptoLocker_set1 behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2800-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012251-11.dat UPX behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2032 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2800 2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe -
resource yara_rule behavioral1/memory/2800-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012251-11.dat upx behavioral1/memory/2800-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2032-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2032-26-0x0000000000500000-0x0000000000510000-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 2800 wrote to memory of 2032 2800 2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe 28 PID 2800 wrote to memory of 2032 2800 2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe 28 PID 2800 wrote to memory of 2032 2800 2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe 28 PID 2800 wrote to memory of 2032 2800 2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_b4dffb050cc6ff97fbc72e618fa70ad7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2800 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2032
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
62KB
MD54ce83802b7bff6460d4c0a597081bc96
SHA1da07f2075dbbe4515bc9cefaba9045d2ef691372
SHA25656e50253bc49e292f52ac5500241d8ba9ba01fbaf1ff08d443f34062e11eaab7
SHA5125e420483745da7c8e04f2f7330c0fc600d0db2636ba73559c42e0f926a1f685c6d42e25162aeb8bfda1aadc5f1c6e084301f27023418e6dc7c2b63697855432c