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Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
14/06/2024, 08:14
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe
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Size
43KB
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MD5
df93989d29d8e3524012f2aa2113f5b6
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SHA1
74e5a93c91dc6ccd94e62250d25f0f391f470bcf
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SHA256
8537c1236275b31b2bdc629d95df6c467819791b22ae0c891fcc95c59bcd1572
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SHA512
fabde8d44d7a239d68ec6a4dbb1b81d0fc4bed9387473c1d82c5ef92862f8901088074fe64dbb399167c1ef0e1d759bb4db3ffcabb0218429f739a252cd64fab
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SSDEEP
768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZnTV:i5nkFGMOtEvwDpjR+viHs3
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/2100-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000900000002328e-13.dat CryptoLocker_rule2 behavioral2/memory/4516-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2100-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4516-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral2/memory/4516-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/2100-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/4516-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/2100-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x000900000002328e-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/4516-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2100-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4516-27-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4516 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 2100 wrote to memory of 4516 2100 2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe 82 PID 2100 wrote to memory of 4516 2100 2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe 82 PID 2100 wrote to memory of 4516 2100 2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-14_df93989d29d8e3524012f2aa2113f5b6_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2100 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:4516
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD50f0c44b48bfbb4e110351ec2c0f96a20
SHA19222edb886fa548ad386f98efe4993619bdb9672
SHA2562019b052023f64fa8a0ca3f446f71122fa3abb597cd37dd453309a2244cd477d
SHA5120498c29e6eb22808ac6ad280d728a8bbabf08e6b7c71d7fe54c05830fe740e08aab38912f394a11665cd176e9bb8d254c18211e70027a1c54f1761fa1c26b867