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Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
11/05/2024, 07:50
Behavioral task
behavioral1
Sample
2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe
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Size
71KB
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MD5
a4dfa67abec795a1242ce344e14cf7bf
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SHA1
56edc4dca779f0f3fc363050e1e6ee661192bb00
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SHA256
b29e6a05b575cd178894135f23aae6fc1b7bc3d38e9ff7feec3204516fc2aaa1
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SHA512
8edcb3cfe1f5e7c50bd247880f240f841d01103d1da84a971264f17b374966d857e9e5b91ba509b9f2d067955654e0e3e56b665a526e5f3837d85947b561460f
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9IOz:C4Q2c94OtEvwDpj4H8zA
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012286-11.dat CryptoLocker_rule2 behavioral1/memory/2228-13-0x00000000028C0000-0x00000000028D0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2808-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2808-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c000000012286-11.dat UPX behavioral1/memory/2228-13-0x00000000028C0000-0x00000000028D0000-memory.dmp UPX behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2808-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2808 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2228 2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe -
resource yara_rule behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c000000012286-11.dat upx behavioral1/memory/2228-13-0x00000000028C0000-0x00000000028D0000-memory.dmp upx behavioral1/memory/2228-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2808-26-0x0000000000500000-0x0000000000510000-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 2228 wrote to memory of 2808 2228 2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe 28 PID 2228 wrote to memory of 2808 2228 2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe 28 PID 2228 wrote to memory of 2808 2228 2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe 28 PID 2228 wrote to memory of 2808 2228 2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-11_a4dfa67abec795a1242ce344e14cf7bf_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2808
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD5b504d3ec0db5b53f6c27a2dcb59988b2
SHA10d0e7d29f20bfb2e892b686d4ba265706d9e8523
SHA256ffc5e1a5684402ab7be950e3518b0a3ecf95ce77c4e049535870d6e1932a480b
SHA512d0399dfcf8c5a222c77fad3d3036fa47ffcf0a5d378a973cbf6542ca913c5838fbc6cfd0f0cbcd3b13b705a188c92bacd00b612164616e5fc562e99b5ec3424e