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Analysis
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max time kernel
155s -
max time network
165s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
06/03/2024, 13:44
Behavioral task
behavioral1
Sample
2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
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Size
80KB
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MD5
be781e47ba551a56e25f87c1859f0345
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SHA1
5edae0dda6a199e2f35c6325b8d87f778c3ee04f
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SHA256
60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5
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SHA512
cbdbd2f57663fd1aa4c1976c84730c2a91e4da9f92043c100300368d30ec77581d874a590b4b54ef7bb6a538fbfc6289724b79ff55d831d62cf97a239fdd2f5c
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyTghK:zCsanOtEvwDpjc
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012248-11.dat CryptoLocker_rule2 behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000012248-11.dat CryptoLocker_set1 behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp CryptoLocker_set1 behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000012248-11.dat UPX behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp UPX behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2640 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 392 2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe -
resource yara_rule behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000012248-11.dat upx behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp upx behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-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 392 wrote to memory of 2640 392 2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe 28 PID 392 wrote to memory of 2640 392 2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe 28 PID 392 wrote to memory of 2640 392 2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe 28 PID 392 wrote to memory of 2640 392 2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:392 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
80KB
MD588f9b45324dedbcef5ccb066760e72bf
SHA10c7d18e66ea4c726a8394d050c8632592c5659dc
SHA256ec38e49db749d13261425daa10b01761761528f4bcf67340eac62a0b43ddc7d1
SHA512361ae0caafbdb63e1b6d4b0b154e5af090498e6fa5edb56feb53379a7819155e8263c9c64687cc9d81a1b7c55a610d3819c773e43bf0c3560362a2047ec3c598