Analysis
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max time kernel
144s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
10/06/2024, 21:39
Behavioral task
behavioral1
Sample
2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe
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Size
24KB
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MD5
bb9a28ce80e90a534d32f806d8c4b729
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SHA1
b9cb5176be2035f7965255e3f52c19cae18eaead
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SHA256
8e7f65b7757f2c5dd10e43bb62e88531d6d6e9d4e293ee7b6133befffe24a178
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SHA512
9cdbf03cdac5e5f050af0048557bb86d00ecd1e5f1c6ca87a736b2b5a4ee6701eb725dbd0a47060c4ef65338b7819eb7e667bb98295aa34d9af8292fc5a61b07
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SSDEEP
384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ1p:bVCPwFRo6CpwXFXSqQXfjAsJb
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1704-0-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c000000012279-11.dat CryptoLocker_rule2 behavioral1/memory/1704-15-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2864-17-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2864-27-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1704-0-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/files/0x000c000000012279-11.dat UPX behavioral1/memory/1704-15-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/memory/2864-17-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/memory/2864-27-0x0000000008000000-0x000000000800E000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2864 hasfj.exe -
Loads dropped DLL 1 IoCs
pid Process 1704 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe -
resource yara_rule behavioral1/memory/1704-0-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/files/0x000c000000012279-11.dat upx behavioral1/memory/1704-15-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/memory/2864-17-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/memory/2864-27-0x0000000008000000-0x000000000800E000-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 1704 wrote to memory of 2864 1704 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe 28 PID 1704 wrote to memory of 2864 1704 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe 28 PID 1704 wrote to memory of 2864 1704 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe 28 PID 1704 wrote to memory of 2864 1704 2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_bb9a28ce80e90a534d32f806d8c4b729_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1704 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2864
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25KB
MD5f58d74c8d2bf1cf499c288fc12f51c8a
SHA1ed63d8015129e3dfbe498d9713179062a98393c8
SHA25612917caeba52726a1fc9fe5ebd292c84e61b172825097654a2ab8749254a431f
SHA5129a30f01a54b1e1a271f14323b8e95785c27356e94aaca7582f1a054f0209e9fc3d9d0c8e8f49b0c314ab3ad117b918493b8e1cfc4b7ae2841a5ff8c357ca1a00