Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
26/05/2024, 10:42
Behavioral task
behavioral1
Sample
2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe
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Size
71KB
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MD5
95b6e7c88ac17a92a43a02732c3c639d
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SHA1
30246a7677305c04fffb04b8d773e6a030b49c58
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SHA256
5dce237ad2d285c8b26e797b4170adb33f34aa98ecbedae4436b56b2847da905
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SHA512
2352ae13d52d7cf2d7901ca3edca139f985984d94409e4c311957613f5c5a68d97d39a4fc46e62caaf0a63b6a44749eb053913d45e845bb4b8e508d913f0ffde
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95h:C4Q2c94OtEvwDpj4H8zi
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2340-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000143fa-11.dat CryptoLocker_rule2 behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2796-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2796-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2340-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d0000000143fa-11.dat UPX behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2796-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2796 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2340 2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe -
resource yara_rule behavioral1/memory/2340-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d0000000143fa-11.dat upx behavioral1/memory/2340-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2796-25-0x0000000000500000-0x0000000000510000-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 2340 wrote to memory of 2796 2340 2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe 28 PID 2340 wrote to memory of 2796 2340 2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe 28 PID 2340 wrote to memory of 2796 2340 2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe 28 PID 2340 wrote to memory of 2796 2340 2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_95b6e7c88ac17a92a43a02732c3c639d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2340 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2796
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD5489edcef5d30325d312d1e78ab28fba4
SHA16d77f5f7dfaaf7c8a8c5d8992a8967c1a5bf4d5d
SHA256bb178fbf9462525418eef36f8a6bb07726163b693f31cf5ab389d57b988828a1
SHA5129dd3709d95ed634f7f257b23d62ed37516d2c5f43986074ecebac1cab752dd447d163245087241473842bc0a99e0e383f005a04f8b0894b85c29d253af14fd69