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Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
08/04/2024, 20:29
Behavioral task
behavioral1
Sample
2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe
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Size
63KB
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MD5
6678c103a8b17a22be879b5cc8db29fb
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SHA1
0fecfd195045bafbb445c20503af1f79f72c4963
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SHA256
8efdb20ce0c634ec9e5423f63e509734144c1b38eebca767181b9aaa32fff7df
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SHA512
0a100f94d7e3f518469eb47630f6a5ff49cd0222170aacdcc4f3012b09710d1be9d62e0f78557337a51e9606e33ed7e6a090b4f26fb40c2e0b444762482ef54f
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5ScC:zj+soPSMOtEvwDpj4kpmeLmLC
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012306-11.dat CryptoLocker_rule2 behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c000000012306-11.dat CryptoLocker_set1 behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012306-11.dat UPX behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2524 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2220 2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe -
resource yara_rule behavioral1/memory/2220-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012306-11.dat upx behavioral1/memory/2220-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2524-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2524-26-0x0000000000500000-0x0000000000510000-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 2220 wrote to memory of 2524 2220 2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe 28 PID 2220 wrote to memory of 2524 2220 2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe 28 PID 2220 wrote to memory of 2524 2220 2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe 28 PID 2220 wrote to memory of 2524 2220 2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-08_6678c103a8b17a22be879b5cc8db29fb_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2524
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD565ea4c16e75845b7ec39e757ba821e5a
SHA1d27cd9568839b94f8de5097628db992af2aea413
SHA256d20507c1b85589da22effef099d94bd8827abb18c2f68a4da459ce298a2d40d3
SHA512c457077fc840c216d291e5fa62cf46442ab09dfa55481d05f97d9f13b69faaf600c0632fbb2aea131654574f743cd53d96665aac4775652397a30bb8b1e25d49