Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
17-05-2024 16:47
Behavioral task
behavioral1
Sample
2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe
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Size
25KB
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MD5
aef78f46044d7cd4000c244e07cb0e91
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SHA1
6f91ce25fc3a7888d7ca1b78428f760c77f6c5e8
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SHA256
67e186e160b03e8b473a6099bbdc15453e697d5b3c2895d01451d3b94b085160
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SHA512
a566886eff4edb6dc88dd3571dd1a66759d8b110c9739f1851f04bc08e3613c9120b5e77e796543febc57b3f810d9b21daccf18c4dae97e6ee0b31fce829f37f
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SSDEEP
384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HnpObd:bVCPwFRo6CpwXFXSqQXfjAHAp
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1512-0-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000015cbd-11.dat CryptoLocker_rule2 behavioral1/memory/1512-16-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2368-17-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2368-27-0x0000000008000000-0x000000000800E000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1512-0-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/files/0x000a000000015cbd-11.dat UPX behavioral1/memory/1512-16-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/memory/2368-17-0x0000000008000000-0x000000000800E000-memory.dmp UPX behavioral1/memory/2368-27-0x0000000008000000-0x000000000800E000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2368 hasfj.exe -
Loads dropped DLL 1 IoCs
pid Process 1512 2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe -
resource yara_rule behavioral1/memory/1512-0-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/files/0x000a000000015cbd-11.dat upx behavioral1/memory/1512-16-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/memory/2368-17-0x0000000008000000-0x000000000800E000-memory.dmp upx behavioral1/memory/2368-27-0x0000000008000000-0x000000000800E000-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 1512 wrote to memory of 2368 1512 2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe 28 PID 1512 wrote to memory of 2368 1512 2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe 28 PID 1512 wrote to memory of 2368 1512 2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe 28 PID 1512 wrote to memory of 2368 1512 2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-17_aef78f46044d7cd4000c244e07cb0e91_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
PID:2368
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25KB
MD59d0ef089bfb840e5b4a0d4ecf8d11904
SHA172271c0045c1609dfc61e6b48dfb049157592e63
SHA256e26464d53ce9a2d5b53146438156ffeb1a7761b28ce624af63dacdf8ce3db31a
SHA512ce5863424df887a1f55fe8d4d202f6655a107d0678ff049939cd64522ca5abdc6cc8a394044e3af8dbd9d4554bc9fdc0934e1a96624f4d5d71029cb041efc2a2