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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
20/03/2024, 00:51
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe
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Size
40KB
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MD5
9ef2b49bd12b03e11502f0b26f8670b7
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SHA1
1a0fd4025e141825bbaece106ca7dc99df540f52
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SHA256
291335d5f0d4837fff0393264559776f2fa05d2e4b4f7229f34b1c3788b19c01
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SHA512
d728511e48c607c24e68a542aa1f695f231b79ebe7d9826f7c9b539b2085cc8b6cfff722e18eec849d7b7c242d00f7e9f52bdf035dbb7a795230d03f71aa4e55
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SSDEEP
768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRpptB:m5nkFNMOtEvwDpjG8hhXzzB
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1364-1-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000015b6f-11.dat CryptoLocker_rule2 behavioral1/memory/1364-13-0x0000000000680000-0x000000000068E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1364-16-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1364-1-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/2168-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/1364-16-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral1/memory/2168-27-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 6 IoCs
resource yara_rule behavioral1/memory/1364-1-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x0009000000015b6f-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/1364-13-0x0000000000680000-0x000000000068E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2168-17-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/1364-16-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2168-27-0x0000000000500000-0x000000000050E000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2168 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1364 2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_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 1364 wrote to memory of 2168 1364 2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe 28 PID 1364 wrote to memory of 2168 1364 2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe 28 PID 1364 wrote to memory of 2168 1364 2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe 28 PID 1364 wrote to memory of 2168 1364 2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-20_9ef2b49bd12b03e11502f0b26f8670b7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1364 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2168
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD5f7cb8aa3470a447ce980acddaad8a22c
SHA15ebe437b655199f2dd15014f896252f9ea01e296
SHA256f0e7e2dfa323e101e580db1960c06930d0e0d6ceda15ff7ae8bd3af8a73f2676
SHA512161365c8a9c207e3e81a1e7245600001ac0e0b8d68b2aa952811ca24f360e35e2bed7baebba9799edb012ca59c89ff39ed3f3c6e7d6f1677cdb93100de1876a4