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Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240221-en -
resource tags
arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system -
submitted
21/02/2024, 20:36
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe
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Size
46KB
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MD5
655aa0838c3b556d5fff5a46fcb0070f
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SHA1
1e353cd5797902a53a2c998f57637040fdc9009e
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SHA256
96dd854d17bbad6440d7b38d50f7fba63c4f0bfa5813510454576f4f39b7127d
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SHA512
d42bdcb51a304ecc635cb2e12209d2bf891680ac0ad485426ed0a07f3239e05590641d253ee259f0927f911440d6daeb32c8fbe2c10602eacc84f5ca6b43584a
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRZr:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRF
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x00060000000231e5-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x00060000000231e5-12.dat 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-1-5-21-2200714112-3788720386-2559682836-1000\Control Panel\International\Geo\Nation 2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4812 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 4628 wrote to memory of 4812 4628 2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe 82 PID 4628 wrote to memory of 4812 4628 2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe 82 PID 4628 wrote to memory of 4812 4628 2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-21_655aa0838c3b556d5fff5a46fcb0070f_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4628 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4812
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD53b30079b587edf9244262b7f0eef666f
SHA1d6074414b2dc220aa019c6aad2c3b2e36c4b2b40
SHA256d4243773224468b10c4e467617452a8e68a53100b13dd357ca6584c3a6d79439
SHA512c592d9756e354333f636d226c345928d4c89df05c6563172b560d84c077aae93bbbbe5404bf2ca6b4bdac98da5ad67d1902862305dc0d55420067e8d9f330522