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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
15/05/2024, 15:21
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe
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Size
42KB
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MD5
25bb91962c15d887d9f386d17591143b
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SHA1
68b018e07894376dda83bf34accc393cd919aa5a
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SHA256
3fd824d0be3088b39cf060b9fcf8864318ed3ac1da026f65a0c11f94f5591e67
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SHA512
e219b8b167977d36e5e025ed27a6c7d41fc493af33e65528d32701a646033a82c2492a4d7268b5c27771fc7b13ac34bc880df2c5e0fdf0cd6a3d9ac0a19214f8
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtB:bCDOw9aMDooc+vAqtB
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2888-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000122ee-11.dat CryptoLocker_rule2 behavioral1/memory/2888-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3044-16-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3044-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 3044 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 2888 2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe -
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 2888 wrote to memory of 3044 2888 2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe 28 PID 2888 wrote to memory of 3044 2888 2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe 28 PID 2888 wrote to memory of 3044 2888 2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe 28 PID 2888 wrote to memory of 3044 2888 2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-15_25bb91962c15d887d9f386d17591143b_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2888 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:3044
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5503d811dca545c56b0dafebe512fd151
SHA12a4b08cd3502bc08ffa8b21291ce68b72d0fa6f1
SHA25619eed9686969a8010c33ad3e839391819961d52b2eb1b40e81698577c1e63e16
SHA512d6c48acd8475bafbbd5a6f51375978d14b873362e536331778ba4a4fa35b073e1886172ee7126d9f128481dac22c8d09eeb0d3db7bc484d9e4eff07719af464c