Analysis
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max time kernel
145s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 20:02
Behavioral task
behavioral1
Sample
2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe
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Size
98KB
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MD5
6e60fbf0626b3b505ab484c241dfabfd
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SHA1
e946a0e19f353506b44cacbb2da61b2e6eebdd01
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SHA256
b9d9d0e3ca26cac3d23bab7cb7636e2ed2cb0964dbb8efc44d2f8cc93721898e
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SHA512
9cbfac4774c08d50c0f7f25d7f41c95a94f9ab87dc39119d73276fcef01c2fc156c2afb7d903b454a54345c81c6efcac38676050944bddf20f9acd793c86a5b5
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuvQfb:zCsanOtEvwDpj8
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 behavioral2/memory/2648-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2620-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2620-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 C:\Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 behavioral2/memory/2648-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2620-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2620-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
Processes:
resource yara_rule behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX C:\Users\Admin\AppData\Local\Temp\misid.exe UPX behavioral2/memory/2648-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2620-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/2620-55-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exemisid.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation misid.exe -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 2620 misid.exe -
Processes:
resource yara_rule behavioral2/memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmp upx C:\Users\Admin\AppData\Local\Temp\misid.exe upx behavioral2/memory/2648-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2620-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral2/memory/2620-55-0x0000000000500000-0x0000000000510000-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 3 IoCs
Processes:
2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exedescription pid process target process PID 2648 wrote to memory of 2620 2648 2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe misid.exe PID 2648 wrote to memory of 2620 2648 2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe misid.exe PID 2648 wrote to memory of 2620 2648 2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_6e60fbf0626b3b505ab484c241dfabfd_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\misid.exeFilesize
98KB
MD56dca5a4cdc34f866af15258f1411f770
SHA10156097a991d91eff428e34cd68d957487190374
SHA2565207e4b7f06906a05ed3071e2b26e5674456722b59156d4978266cd3048818ca
SHA51281345b3128c5055e2e2c45f636018a242cc2eb4615a0c324d92b4a0bab2a2a47fa4d1a598dfb407aa2df0e5dcbd0a208751845a64d3e7d0f7bd67e2fbdc6f6e7
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memory/2620-18-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/2620-20-0x00000000005D0000-0x00000000005D6000-memory.dmpFilesize
24KB
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memory/2620-23-0x00000000005B0000-0x00000000005B6000-memory.dmpFilesize
24KB
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memory/2620-55-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/2648-0-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/2648-3-0x0000000002100000-0x0000000002106000-memory.dmpFilesize
24KB
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memory/2648-2-0x00000000020D0000-0x00000000020D6000-memory.dmpFilesize
24KB
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memory/2648-1-0x00000000020D0000-0x00000000020D6000-memory.dmpFilesize
24KB
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memory/2648-17-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB