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Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
28/03/2024, 04:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe
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Size
40KB
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MD5
d97ac71c448ae1a3e74ea03516c9cdb8
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SHA1
bc0060ea9b1a32646896b4cffffbe0a52c04cb15
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SHA256
ef8abe2b5c566deeed78b250af7bb0e8df12db85efb4cd175b4e651a41b0c8d7
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SHA512
eea231afe40c9364ca91b3df56c81562f2f18581ea769fa8423be82babb867ad006c10bf2bfe75fdaa57cc9bcca844f9e878aeb8cdaa582be5cf6a2364b4293d
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SSDEEP
768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9RzhwaO4t:i5nkFGMOtEvwDpjR+TD
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012240-11.dat CryptoLocker_rule2 behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000c000000012240-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/1368-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2584-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2584-26-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2584 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1368 2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe -
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 1368 wrote to memory of 2584 1368 2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe 28 PID 1368 wrote to memory of 2584 1368 2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe 28 PID 1368 wrote to memory of 2584 1368 2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe 28 PID 1368 wrote to memory of 2584 1368 2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-28_d97ac71c448ae1a3e74ea03516c9cdb8_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1368 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2584
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD5d44c5fb19d17def8213ec97396e5c1ec
SHA1d71bb0c1ece6b70f9fe4f309d5758f9aeb60964d
SHA256cb0ab1ad9786421bcbd3eb8b01ea712eeaca6c7acb457a2c1100467a1ffe56fa
SHA512c37689f7153db06d96c4658d79808e0dfc311a128f262ab1c84c183c81ff8ba8593315c96f99369ddf27f542910e97baa25663ec16b5e1dd4e8b3d66b6ecf502