Analysis
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max time kernel
150s -
max time network
151s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
27/05/2024, 19:08
Behavioral task
behavioral1
Sample
2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe
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Size
81KB
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MD5
2eca053bff3e6e167d756204afbbc1bb
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SHA1
b6c6cc35d3424efce8a02a6f88f9273db9a3c1fd
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SHA256
1b7928bfce7e0ad585e56960f10cbded5c61a9bd394c9554bb23bbe15d58f041
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SHA512
d145b94592467ecddbce6a6dbe2888cec9e6588212a7c293203fda20171357d6671a6e6f32958f91739fb1933c6000e5bae8c55ab0210083d37f642425e1c88d
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7Qe:zCsanOtEvwDpjS
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001228a-11.dat CryptoLocker_rule2 behavioral1/memory/2068-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3000-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001228a-11.dat CryptoLocker_set1 behavioral1/memory/2068-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3000-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d00000001228a-11.dat UPX behavioral1/memory/2068-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3000-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3000 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2068 2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe -
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d00000001228a-11.dat upx behavioral1/memory/2068-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3000-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3000-25-0x0000000000500000-0x0000000000510000-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 2068 wrote to memory of 3000 2068 2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe 28 PID 2068 wrote to memory of 3000 2068 2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe 28 PID 2068 wrote to memory of 3000 2068 2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe 28 PID 2068 wrote to memory of 3000 2068 2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-27_2eca053bff3e6e167d756204afbbc1bb_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3000
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD5b92d78f3eafc7abfc2a55eb4a2538d68
SHA1d8f003677237906c5b83b83b50dbf86f3f489931
SHA256184a719570e9c25b8f28d57f3940e8c88c90284eac75d673b1cd980a380ebd30
SHA512be50f7209ca1a36dd7f09dc971fef88ee280cd9f66862f78c43635d2401ddc4b5914ee48eacec402bc4a4d910c017bd785987ba1700efd7a105f52f4588d2fe6