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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
02/06/2024, 13:55
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe
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Size
42KB
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MD5
dd9992cbe0e967903b16b31879b24685
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SHA1
848e4443b50a360cf95e8d740d25e7138601d5b8
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SHA256
0b701ba7c405ddefeea0c5748d816f697ba9fa7c30cedbc2fc5a607f7defc674
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SHA512
ebce38117929896b910b0c5f556bec4e95c13c3964f9b23497bfe41c4645c7f3c6db5e3c6793aa6f979369c382e4dcf302730e7d63b9b30b77a5d91574a855ad
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SSDEEP
768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqAa:bCDOw9aMDooc+vAqAa
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2040-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014284-11.dat CryptoLocker_rule2 behavioral1/memory/2040-12-0x0000000002730000-0x000000000273A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2040-15-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1688-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 1688 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 2040 2024-06-02_dd9992cbe0e967903b16b31879b24685_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 2040 wrote to memory of 1688 2040 2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe 28 PID 2040 wrote to memory of 1688 2040 2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe 28 PID 2040 wrote to memory of 1688 2040 2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe 28 PID 2040 wrote to memory of 1688 2040 2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_dd9992cbe0e967903b16b31879b24685_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:1688
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD5a91b917c4a912e538304b167e333ab7f
SHA1000aa85bfaf706639e96cf2c53dbb3fce38dd570
SHA256769d3903866c406873a95bdfc76885d98200d7fed8de166cb1433049ff783166
SHA512210b9548ca6e60e9b6eae724ada71b69dd6dd4ab7a08e0774cdaa8fad9885970e6dcf5ae06b1cd2b1fd8f0937bb064071a2e80d431dd50a48d6bb9f7889b3d4e