Analysis
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max time kernel
148s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
25-01-2024 15:36
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe
Resource
win7-20231215-en
General
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Target
2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe
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Size
43KB
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MD5
6ae29102bfd181035d4097c3bcb00a76
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SHA1
12bd4480fb731c722b403af57fedc3f6a7464de5
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SHA256
b67696be44854032ae60560af45d0011ef103ec142b79ed955ac63e910857cbe
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SHA512
7bef0970ede0f9b320934595aab1ee8ebaac0f1d550beb2c8886a30b04963081cfc1bcccb40dc49e0daa144b39efa29b87b05056f31486d28143282f83275a12
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SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X3dW:V6QFElP6n+gMQMOtEvwDpjyaHaXq
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 4836 asih.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
Processes:
2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exedescription pid process target process PID 4792 wrote to memory of 4836 4792 2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe asih.exe PID 4792 wrote to memory of 4836 4792 2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe asih.exe PID 4792 wrote to memory of 4836 4792 2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6ae29102bfd181035d4097c3bcb00a76_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4792 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4836
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\asih.exeFilesize
43KB
MD5bfe05d15695ce9d9a497999046375769
SHA19829458bea44d9ec6f942bf42b63afcf16f9bb75
SHA25669c7d5d9cda65c9668c1654f259e62bc2a47b31a96d50e710e46a041e56da253
SHA51285b5fc14f03dbf1d851316e4cd7b0d3b33564bfdcae4bff70dd745de5c6a9ddf7681bdd0e5dc6ce64487ccb6392337bd54f90ff0211a593baff8bcd057f96257
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memory/4792-0-0x00000000004D0000-0x00000000004D6000-memory.dmpFilesize
24KB
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memory/4792-1-0x00000000004D0000-0x00000000004D6000-memory.dmpFilesize
24KB
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memory/4792-2-0x00000000004F0000-0x00000000004F6000-memory.dmpFilesize
24KB