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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
21/05/2024, 23:40
Behavioral task
behavioral1
Sample
2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe
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Size
71KB
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MD5
6d3db44f8894645eee81ee8b136538a4
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SHA1
a9e3ed87eb08b8bae6a344a193e996593cf62903
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SHA256
08c3fe318c6ba9beef467e0b745e3dbb00785e0764880836f1d136f5fd178e67
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SHA512
889e908c736e33bb71b1961e9b2f0e8dbdbce57aac9b390dc9d42eed3ad7b75d7809bf2288097c49668f1d1e33e78abaff2af914211c7b866b9398c4bf1df0e2
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SSDEEP
1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Hd:C4Q2c94OtEvwDpj4H8z8
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001315b-11.dat CryptoLocker_rule2 behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c00000001315b-11.dat UPX behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2520 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2460 2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe -
resource yara_rule behavioral1/memory/2460-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c00000001315b-11.dat upx behavioral1/memory/2460-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2520-25-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2520-27-0x0000000000500000-0x0000000000510000-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 2460 wrote to memory of 2520 2460 2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe 28 PID 2460 wrote to memory of 2520 2460 2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe 28 PID 2460 wrote to memory of 2520 2460 2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe 28 PID 2460 wrote to memory of 2520 2460 2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-21_6d3db44f8894645eee81ee8b136538a4_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2460 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2520
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD57cac1e1ba0da324602d08f83692205ea
SHA15fc6fcdca50d20dde0ac93c5899549434b618a33
SHA256b6c0e9b4c50861c0e6783b1c22c051b2089bb35991409c31f31083d247060bbe
SHA512f61d4753e597b380720b14db383ecfcf0a0fe7233b2d9013dfe2414b44fdc18f8efd07fcb39985a1f26f408358e755f9870aee082002e205fa6bedcc7b0be309