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Analysis
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max time kernel
134s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
26/08/2024, 07:13
Static task
static1
Behavioral task
behavioral1
Sample
2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe
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Size
48KB
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MD5
ed25e25666540aa270418f1f3d21a11d
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SHA1
dc31bb7866b3ef21cedba926aacb31f9f2469b36
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SHA256
41d4868934911df58d351d59697699057b6293ec1657206bf75657e9fa129844
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SHA512
357bab639c7c65793ff73e1c90a8d60317411526f55e353f956b683b38691b7cfab40a33af478b5d2812160c7073db90861d61bc1a48897a55b3f61ad735fd78
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatc:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation 2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 1672 hurok.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 2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1060 wrote to memory of 1672 1060 2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe 86 PID 1060 wrote to memory of 1672 1060 2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe 86 PID 1060 wrote to memory of 1672 1060 2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-26_ed25e25666540aa270418f1f3d21a11d_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1060 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD50f67fb3a37ab40300022e970b502f712
SHA13b932840f477838655e2bd167689d84baaad11c2
SHA25690d33f7708a6caef02d6163ae25a3d93ecbc4e4aedd325e64f2a4141fa919ce8
SHA512d488d28a6bc5b211a0cbd52cfafe56db6957930ffa6b883bd8ba56dc257dd1709ec1402a1a665096a45a4772dd193d15040021cbc6a03384d2fe940b1630115e