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Analysis
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max time kernel
150s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
28/09/2024, 04:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe
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Size
37KB
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MD5
fd6c8395f522d4bf16080df0c95d5514
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SHA1
c00cf5612f74d6fe17b3a74e9ae0b8399004ead3
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SHA256
63241a0733aa41c7804fdad349240d4eb07cd402e8ed0f9fb35ae596671a68cc
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SHA512
d23b9d7cd1c6216c4a7a89cfb68a7e113980d859aaae74521859821c02613e23876c97c12177cbcbf577a1b51e2e304837ee58080968419c7cc87cef09555a11
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SSDEEP
768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlU7hl:b/pYayGig5HjS3ull
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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation 2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4908 retln.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language retln.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2736 wrote to memory of 4908 2736 2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe 82 PID 2736 wrote to memory of 4908 2736 2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe 82 PID 2736 wrote to memory of 4908 2736 2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-28_fd6c8395f522d4bf16080df0c95d5514_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4908
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
37KB
MD55ceb4dcc0e96bbf5885e315b07131172
SHA1a3dba6ffca77c63ffa78442572bdacb963a55d10
SHA256f6bc2d6017fad7e630cef53c917b94157fc306399fab63447d37968c46ce09d1
SHA51239babb4a772c4b346f4c42b39e44d57a12cb88fe7d3506c003880e297b36c7a72a501511816fa2d2ff1d4c33d623ca5f86686bdcc410681e2e11fcaedaf1e900