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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
14/03/2024, 00:28
Behavioral task
behavioral1
Sample
2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
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Size
83KB
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MD5
2b6ad7edba6c3d6a9eaa445141d26903
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SHA1
d6080830b17b44eb7f16f3c86640b985a3808f1a
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SHA256
544a39ed05208387d1864902a5679f493cd3d188308d690ffa3249fd117e52ec
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SHA512
1de6d33b469b3e625b98f4d6cab5388a8cb606f0c5df37355e90fa37dca233412fd9e23726770448988c1636c14d198eadf479e35982ca0925956e294488a4fb
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1na:zCsanOtEvwDpjk
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012251-11.dat CryptoLocker_rule2 behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000012251-11.dat CryptoLocker_set1 behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000012251-11.dat UPX behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2540 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2848 2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe -
resource yara_rule behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000012251-11.dat upx behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-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 2848 wrote to memory of 2540 2848 2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe 28 PID 2848 wrote to memory of 2540 2848 2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe 28 PID 2848 wrote to memory of 2540 2848 2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe 28 PID 2848 wrote to memory of 2540 2848 2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2540
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
83KB
MD552e2a820c2ee578cd284a410abf3d401
SHA10479232463cbeb94350eee99598fecbe548e7c02
SHA256efea4cba372784664fddcd0603cf7e358430c4c2e7f6a591a73e8f78644d19b6
SHA51267240eb8c53a31a84ff11c200f7ddc341b118dc747b8f55e43379d4f262ebec75f0f880bbcd2921fbb05710908c2f70e810627974fa8f333062c72640cdb7952