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
14-02-2024 14:14
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe
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Size
69KB
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MD5
fd77395e94e60088a0cadf3f3595e577
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SHA1
fae1846ade41da904ae08a8b3a6266b07f9d793c
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SHA256
907b59bfe159b973dacad93b8319c9f8f024601a7a8e68f2902cbce5f8cf43ca
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SHA512
e7bb0ac70daedeed6059640bbf6196bf51d0f52f86681c31af6d82b2dda96a032ea3ca1005231b990bbc5221d634cd419e3909a7d598997e2f077694c828a084
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SSDEEP
1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUYIU:DW60sllyWOtEvwDpjwF85W
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000023225-13.dat CryptoLocker_rule2 behavioral2/memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4744-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3180-0-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0007000000023225-13.dat CryptoLocker_set1 behavioral2/memory/3180-17-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 behavioral2/memory/4744-18-0x0000000000500000-0x000000000050B000-memory.dmp CryptoLocker_set1 -
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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation 2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4744 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
description pid Process procid_target PID 3180 wrote to memory of 4744 3180 2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe 84 PID 3180 wrote to memory of 4744 3180 2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe 84 PID 3180 wrote to memory of 4744 3180 2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_fd77395e94e60088a0cadf3f3595e577_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3180 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4744
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
69KB
MD53b50a8cc89be9d0cea379d77bc88394d
SHA1083a0821330ce6598aa50e5266ddd6240e6c734e
SHA256114d456d9c2e8c3864c26a68762ff420e41e84479cbdd7e940c81f665be07a06
SHA5122511f4d64c5a6127a68d6b83f7e3e1686bdecfbff4d12fdfaaffee30c98b2e448d3748c82ff7cc803d38be9ab5b616e83ff1a8ef2013ecdb57ed7bcbd009c9b2