Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05-04-2024 02:58
Behavioral task
behavioral1
Sample
2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe
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Size
34KB
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MD5
e88a9595c67f543a3cd3b3e6c8e90909
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SHA1
2b753bb897ff07409bcef0c6220672b38a9c8af3
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SHA256
2155f439475fd2fa534db20144eeb5a7a116134cc59e70ef67473c2c1b5583b8
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SHA512
7d530298ba24120212e782d63a4c7eda3699b1dec52e9535805cc5ddba24ba3e07321da79bde346f448a49b27b1de27b6d23830e695a457f9f1e95e7ebb70fe2
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SSDEEP
768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axIM:qUmnpomddpMOtEvwDpjjaYaV
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2096-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2984-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000012245-15.dat CryptoLocker_rule2 behavioral1/memory/2096-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2984-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2096-1-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2984-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000012245-15.dat CryptoLocker_set1 behavioral1/memory/2096-14-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2984-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2096-1-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2984-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x0009000000012245-15.dat UPX behavioral1/memory/2096-14-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2984-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2984 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2096 2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe -
resource yara_rule behavioral1/memory/2096-1-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2984-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x0009000000012245-15.dat upx behavioral1/memory/2096-14-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2984-26-0x0000000000500000-0x000000000050F000-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 2096 wrote to memory of 2984 2096 2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe 28 PID 2096 wrote to memory of 2984 2096 2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe 28 PID 2096 wrote to memory of 2984 2096 2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe 28 PID 2096 wrote to memory of 2984 2096 2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-05_e88a9595c67f543a3cd3b3e6c8e90909_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2096 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2984
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
34KB
MD5ed7e54e41cf54e3dc0cc2b7c7c838a64
SHA11cea3d90499752c992ac6f563b7cf922211e3368
SHA256baaa1b08673e09a52386114b7937bdef9cacc2dc61006b4a028791a9b1ed0877
SHA51262fcb84af52b9b8d63c797a8ed74513d01b04867ab3c7b8179fc6375439041124b460eaf85d69f8b5f73abcbf22f1e8ea8728c3f066497600617e37dc86e04e3