Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31-10-2024 08:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe
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Size
45KB
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MD5
5d1028c61787328db16c8f7ad3ca38b4
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SHA1
cc12066a150c0ebb1fecacf4e9c8946b4ed551b9
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SHA256
6cc35b020a3389217b33100b41b03c1bba956824b4cf26ba4e505c739cc89d32
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SHA512
f725ac1e76d0778224547c3c27fcf53cec1583d5a9a9984fc1d53decf2e608b3ceae29e798ce467274b362b773e693a81bede4538e40cf8aab09741a9935cd07
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SSDEEP
768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPP:P6QFElP6k+MRQMOtEvwDpjBQpVXi
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation 2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid Process 628 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exeasih.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exedescription pid Process procid_target PID 4148 wrote to memory of 628 4148 2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe 84 PID 4148 wrote to memory of 628 4148 2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe 84 PID 4148 wrote to memory of 628 4148 2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_5d1028c61787328db16c8f7ad3ca38b4_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:628
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5cae2c26fd73d29c0f09edf52ff004042
SHA1c8e5335fcc076973469a61bcf32433a7e18e8119
SHA256e503a9eff8b4e97edc849bedd142b865e14cb766b1eb22f454a5486e3e7bb38a
SHA512b17b6a0fb281f7040bbb6340be1870031091be754993b8517c7d5edce0dcbf0eeaf0f061cfb180d868ced0a073d2e508d7ae7c3bd2f425ebff2670a042e5f97b