Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
11/06/2024, 00:51
Behavioral task
behavioral1
Sample
2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe
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Size
61KB
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MD5
2d060220f63307eebdf390edaf32f996
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SHA1
89a51ba075ddcb8ae3eaf649f99053d8c5ca631f
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SHA256
fc888caaeb4c359d4b6c39cec91572d84f36cc568818ec30861cf8c3d68a2997
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SHA512
3330b1724a52a16b1a67fb59dbf09ec52285e86ff97861ab0de3d139df0cbc9939847667139156a3cb4c89a4ab64da5e9e3152ae672d76e47f0979b559f1b994
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pd3k:H6QFElP6n+gou9cvMOtEvwDpjCpVXz3k
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c0000000136fc-11.dat CryptoLocker_rule2 behavioral1/memory/2576-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2576-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c0000000136fc-11.dat CryptoLocker_set1 behavioral1/memory/2576-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2576-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c0000000136fc-11.dat UPX behavioral1/memory/2576-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2576-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2576 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1740 2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe -
resource yara_rule behavioral1/memory/1740-8-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c0000000136fc-11.dat upx behavioral1/memory/2576-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2576-25-0x0000000000500000-0x0000000000510000-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 1740 wrote to memory of 2576 1740 2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe 28 PID 1740 wrote to memory of 2576 1740 2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe 28 PID 1740 wrote to memory of 2576 1740 2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe 28 PID 1740 wrote to memory of 2576 1740 2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_2d060220f63307eebdf390edaf32f996_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2576
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD53fe42829574a832714b5872a18b02334
SHA131afdc581c749256a4fb2929b31df7f20baa9d03
SHA2566a5012754b4f2b50b264633180b5f3fa520b9a7df891b0a87a884dc43e8a7d4a
SHA51201c14289db6f6bbc130209de23fe56570aae2438703e623d3758f63ef1177b3a89962336a97eab0bbd334ea926ce791e9f9f54c0035074a96b4cf4a1182784b9