Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
07/06/2024, 16:31
Behavioral task
behavioral1
Sample
2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe
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Size
81KB
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MD5
14200b1e1f17abe5c85ac1cae3d31768
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SHA1
968016803046e0c007b1a2e60418ff5a72ee73c9
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SHA256
bf3fe4a3db6ac1b4a633bdbc7929b8cc56359ababd98dba3446c2167a7e56864
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SHA512
8ac69483bb61b5739798bcc00556e21205d9aad27d10dbb5fcaf73d8289bee3b272462d45087b04762630a0562dad8af2c17028f31f4279577d0a25b9e114ced
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdI:T6a+rdOOtEvwDpjNta
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000144e0-11.dat CryptoLocker_rule2 behavioral1/memory/2760-13-0x0000000000570000-0x0000000000580000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1696-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b0000000144e0-11.dat CryptoLocker_set1 behavioral1/memory/2760-13-0x0000000000570000-0x0000000000580000-memory.dmp CryptoLocker_set1 behavioral1/memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1696-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b0000000144e0-11.dat UPX behavioral1/memory/2760-13-0x0000000000570000-0x0000000000580000-memory.dmp UPX behavioral1/memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1696-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1696 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2760 2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe -
resource yara_rule behavioral1/memory/2760-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b0000000144e0-11.dat upx behavioral1/memory/2760-13-0x0000000000570000-0x0000000000580000-memory.dmp upx behavioral1/memory/2760-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1696-26-0x0000000000500000-0x0000000000510000-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 2760 wrote to memory of 1696 2760 2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe 28 PID 2760 wrote to memory of 1696 2760 2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe 28 PID 2760 wrote to memory of 1696 2760 2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe 28 PID 2760 wrote to memory of 1696 2760 2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-07_14200b1e1f17abe5c85ac1cae3d31768_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1696
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD51078f5062e58d12161fe32e5fcaa80e5
SHA197d5e36d79543c427ada273817c6020743815b84
SHA256e95a6d9308fe20c680281b2adbeff02b752f32f4fe286d2cd73486b939f7607e
SHA512420c8262cfaf04ab73fbf2da31edb76af1ef438637e5c6d3d03e36fde95020678634be7193910902f6770a81e6b7e88156b9aa92ab3ba2b7a5027cb76b2f96d9