PUP.RustRegion.A

Analysis Report

General information

Family Name: PUP.RustRegion.A
Signature status: No Signature

Known Samples

MD5: 581b4665deb007d05ed0a24369f25297
SHA1: 4c68446fbc267e92d65c84363bb63a5591784aa1
SHA256: 581F0F8CBDE5DFA78D1B40B5D55F280F3CF7D5338E6393464E2ED170E307C4B0
File Size: 1.62 MB, 1615360 bytes
MD5: 32b7fa011917c2a9d76ccfeca67324a7
SHA1: eabda0c1dac6be7bf859d767568288116b82ded0
SHA256: B99426893AB06D22D516819D938734A499614A7165AD32309A7997714F89B9FF
File Size: 3.31 MB, 3309568 bytes
MD5: a05a5c3e0cc6b362ca7b8553b3aaae59
SHA1: e1b74bfeb3c1150858061e43f73eed182cc39728
SHA256: 9D64FD02E49996B0CC6505508E0C73B707E90AAC973BAA7022629A1672D9D0E4
File Size: 6.92 MB, 6916608 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • File has TLS information
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
  • File is not packed
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  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
File Description cleo_redux
File Version
  • 1.0.1
  • 0.8.2
Legal Copyright
  • Copyright © 2021 Seemann
  • Copyright © 2021-2022 Seemann
Original Filename cleo_redux.asi
Product Name cleo_redux
Product Version
  • 1.0.1
  • 0.8.2

File Traits

  • CryptUnprotectData
  • dll
  • HighEntropy
  • x86

Block Information

Total Blocks: 18,418
Potentially Malicious Blocks: 1,206
Whitelisted Blocks: 10,999
Unknown Blocks: 6,213

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

File Attributes
c:\windows\syswow64\cleo\.config\cleo.ini Generic Write,Read Attributes
c:\windows\syswow64\cleo\.config\enums.js Generic Write,Read Attributes
c:\windows\syswow64\cleo\.config\u.cache Generic Write,Read Attributes
c:\windows\syswow64\cleo\.config\unknown.d.ts Generic Write,Read Attributes
c:\windows\syswow64\cleo\.config\unknown_x86.enums.js Generic Write,Read Attributes
c:\windows\syswow64\cleo\.config\unknown_x86.json Generic Write,Read Attributes
c:\windows\syswow64\cleo_redux.log Generic Write,Read Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtProtectVirtualMemory
Show More
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • win32u.dll!NtUserGetKeyboardLayout
  • win32u.dll!NtUserGetThreadState
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation
Process Manipulation Evasion
  • NtUnmapViewOfSection

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\4c68446fbc267e92d65c84363bb63a5591784aa1_0001615360.,LiQMAxHB
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\eabda0c1dac6be7bf859d767568288116b82ded0_0003309568.,LiQMAxHB
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\e1b74bfeb3c1150858061e43f73eed182cc39728_0006916608.,LiQMAxHB

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