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Analysis
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max time kernel
150s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28/02/2024, 07:49
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe
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Size
97KB
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MD5
78917d0a526ff965045806dcb654f642
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SHA1
faf64f2bcba5a7782d6af7cd2396200838886c04
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SHA256
30d5344b1504183884046b7471cef93d479c98ef4f0b0e0af59a41ee627d1126
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SHA512
39a42041e0b205247cd13dbfc11ba9a9ae2facde1c5e0a51852431c73d4bbfcfd54937efaa9cbf3172276eb0b8680ad35cd2750d2d8e6232c6bc53ca3a6816cd
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT302U:xj+VGMOtEvwDpjubwQEIiVmkf0Z
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00090000000224f7-13.dat CryptoLocker_rule2 behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x00090000000224f7-13.dat CryptoLocker_set1 behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x00090000000224f7-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/4852-18-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3040-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3040-53-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation 2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
pid Process 3040 misid.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4852 wrote to memory of 3040 4852 2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe 88 PID 4852 wrote to memory of 3040 4852 2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe 88 PID 4852 wrote to memory of 3040 4852 2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-28_78917d0a526ff965045806dcb654f642_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4852 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:3040
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
97KB
MD5796fdd673a8273110bb4e02b78da3dd1
SHA1aa628ec0bbcebbee8293ffce757a2cccc5df8e4c
SHA25673c2c1de0e72188e9072c85a00506cc19e9654ef4d9e44bc2b2547f511bc255a
SHA5127ad3f6ac2645f5461a1361f81c4fe35d9e650ce324533b18d1fc7398bfdab7231b3a76209cbdaeca1693c224253156d2962142b28288b6f8e3f5460bfdd9553e