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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
05/04/2024, 20:50
Behavioral task
behavioral1
Sample
2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe
Resource
win10v2004-20240319-en
General
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Target
2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe
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Size
63KB
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MD5
c7a0b9d2a4b2a5ab5fcc8b69559184e6
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SHA1
4f078dc3672caa8a42ddd16f3bdc05d02443e429
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SHA256
73f24bde53cbd09223213fd2a99672ba68c1bc84741295723a7b9e5f624d05be
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SHA512
01216ea4d77348eb86e9d2d8c1d8ccf85d98746ba0250b784da5c87724055d423f5e6684d6adbdc43ff2fdafc8d022b1d0d6bb575f5ce610807c1bd258686814
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVwfXQ:zj+soPSMOtEvwDpj4kpmeLmnwQ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2208-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001313f-11.dat CryptoLocker_rule2 behavioral1/memory/2208-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2620-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2208-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001313f-11.dat CryptoLocker_set1 behavioral1/memory/2208-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2620-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2208-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b00000001313f-11.dat UPX behavioral1/memory/2208-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2620-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2620 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2208 2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe -
resource yara_rule behavioral1/memory/2208-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b00000001313f-11.dat upx behavioral1/memory/2208-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2620-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-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 2208 wrote to memory of 2620 2208 2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe 28 PID 2208 wrote to memory of 2620 2208 2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe 28 PID 2208 wrote to memory of 2620 2208 2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe 28 PID 2208 wrote to memory of 2620 2208 2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-05_c7a0b9d2a4b2a5ab5fcc8b69559184e6_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2208 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2620
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
64KB
MD557def9db65d85406c2dab18ec48f9a3b
SHA1da297adcb5632f96ac014b6bd4a8641eea310be0
SHA2566dfd31cb00778fc85d6ae675a5e62496b9b40bb000fcd8aa7cf76b9798e48640
SHA51298231123e5f9501546aa4067dd6f3f7e4d2f9f4147c539d4f722750a0db895baee45f54d4bc4f9ff44aa4bdf70b2dd472191181c0fc0413f49e213d8bf10ec88