Analysis
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max time kernel
148s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
10/06/2024, 22:14
Behavioral task
behavioral1
Sample
2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe
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Size
41KB
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MD5
eac309ce599ba3c9b813d3c972d12a16
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SHA1
baf65739a1f2688e12dad91dabebdde409355525
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SHA256
fe6bbcaec64241f1ca753d992e3d432818b7415b3b65868b8bc8181be9237f43
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SHA512
0c2cd9028eb0a94aae2fbdedd46c5957f9a04032188b3e0c01cca763f7143f7e042fb37e13d23ae0e0b7c85f91a4781b6c3d73a86408986bd34a6d0e570bfebd
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9hT:qDdFJy3QMOtEvwDpjjWMl7TG
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b0000000122ec-11.dat CryptoLocker_rule2 behavioral1/memory/1144-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1368-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1144-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b0000000122ec-11.dat CryptoLocker_set1 behavioral1/memory/1144-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1368-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1144-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b0000000122ec-11.dat UPX behavioral1/memory/1144-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1368-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1144-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1144 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1368 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe -
resource yara_rule behavioral1/memory/1368-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b0000000122ec-11.dat upx behavioral1/memory/1144-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1368-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1144-27-0x0000000000500000-0x0000000000510000-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 1368 wrote to memory of 1144 1368 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe 28 PID 1368 wrote to memory of 1144 1368 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe 28 PID 1368 wrote to memory of 1144 1368 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe 28 PID 1368 wrote to memory of 1144 1368 2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1368 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1144
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5e3961939866b0f0afb9ef6eee44f4577
SHA1d36fa0cc909a13e946c7eaca8f98ec64ae4428ae
SHA2564268f77ee4484f20f075d951e66ff87e1a47f87989565b6f98c40cc3623f802b
SHA512457546c62bd2f0cff6d11032dd9674da3565536fa04f83f38800057707be0d40cc89561b47b32890f332e8424a24c422121c07a010da5244349e437fe0f3b316