General
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Target
calc.exe
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Size
27KB
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Sample
230408-p3cy7sdd43
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MD5
5da8c98136d98dfec4716edd79c7145f
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SHA1
ed13af4a0a754b8daee4929134d2ff15ebe053cd
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SHA256
58189cbd4e6dc0c7d8e66b6a6f75652fc9f4afc7ce0eba7d67d8c3feb0d5381f
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SHA512
6e2b067760ec178cdcc4df04c541ce6940fc2a0cdd36f57f4d6332e38119dbc5e24eb67c11d2c8c8ffeed43533c2dd8b642d2c7c997c392928091b5ccce7582a
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SSDEEP
384:Otj8FKzuRxmeWCJxhd2WS/YWyiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiLiiiB:QXif4CbPQ7
Static task
static1
Behavioral task
behavioral1
Sample
calc.exe
Resource
win10v2004-20230221-en
Malware Config
Extracted
laplas
http://45.159.189.105
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api_key
56d9a38b25a0c16ea67e7d74c06851fc8eac5b4ad06b30712a8253baf78647a8
Targets
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Target
calc.exe
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Size
27KB
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MD5
5da8c98136d98dfec4716edd79c7145f
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SHA1
ed13af4a0a754b8daee4929134d2ff15ebe053cd
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SHA256
58189cbd4e6dc0c7d8e66b6a6f75652fc9f4afc7ce0eba7d67d8c3feb0d5381f
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SHA512
6e2b067760ec178cdcc4df04c541ce6940fc2a0cdd36f57f4d6332e38119dbc5e24eb67c11d2c8c8ffeed43533c2dd8b642d2c7c997c392928091b5ccce7582a
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SSDEEP
384:Otj8FKzuRxmeWCJxhd2WS/YWyiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiLiiiB:QXif4CbPQ7
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Modifies security service
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Checks for common network interception software
Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.
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Enumerates VirtualBox registry keys
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Identifies VirtualBox via ACPI registry values (likely anti-VM)
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Modifies boot configuration data using bcdedit
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Downloads MZ/PE file
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Drops file in Drivers directory
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Registers COM server for autorun
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Unexpected DNS network traffic destination
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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Adds Run key to start application
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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Maps connected drives based on registry
Disk information is often read in order to detect sandboxing environments.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v6
Persistence
Bootkit
1Change Default File Association
1Modify Existing Service
1Registry Run Keys / Startup Folder
3Defense Evasion
Install Root Certificate
1Modify Registry
5Virtualization/Sandbox Evasion
2