Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-10-2024 22:08

General

  • Target

    55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe

  • Size

    317KB

  • MD5

    2f8c4529d3ea984da867d5bc3bb8c61c

  • SHA1

    9f76eb8c2a8b4d96e1db6c7a09e29f00fe8e0cd8

  • SHA256

    55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae

  • SHA512

    0d74b2e6041fc84179646ededd45fb8ea094f999751de570b712dcca9add94f9ff8e30441fa3f9377376c1f44a3ddff78ecd12ec1a32d8fd3c0616e5f4305086

  • SSDEEP

    3072:vSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lbaV2:vPA6wxmuJspr2lb6

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 3 IoCs
  • UPX packed file 17 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
    "C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
      "C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:42756
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\BXWAO.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:43300
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:42772
      • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
        "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:43560
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:117116
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:117232
          • C:\Windows\syswow64\svchost.exe
            C:\Windows\syswow64\svchost.exe
            5⤵
            • Adds policy Run key to start application
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            PID:117336

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\BXWAO.bat

    Filesize

    139B

    MD5

    0654f004b2e314bad7f75867e91da37d

    SHA1

    4232c22e7340b12108d86e3cb35ed288a3dbc7f1

    SHA256

    ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

    SHA512

    dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

  • \Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    317KB

    MD5

    bbb0b471acd69e0a1a229394de69ea04

    SHA1

    6c16573ff6d1bc1da49d80df4ced98c4ac9f699b

    SHA256

    8cbf5b429777e41b223aeeae0e25a122ec1df0f536ee1c8c00d1e4b8f5211782

    SHA512

    4550ba76e5932341443edf49bc003029d022514aec99b1b7df301aa9c72d5fcf5e17e31a21c87784f03bb3df4d65840ae4bbfa8f1b28239c487a47cb93ff7c8d

  • memory/2180-11950-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11975-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-0-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2180-223-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2180-11949-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11974-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11973-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11972-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11971-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11970-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11969-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11968-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11967-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11966-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11965-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11964-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11963-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11962-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11961-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11959-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11958-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11957-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11956-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11955-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11948-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11953-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11952-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11951-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-65-0x0000000000404000-0x0000000000405000-memory.dmp

    Filesize

    4KB

  • memory/2180-3-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2180-11954-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11946-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11960-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-11947-0x0000000000090000-0x0000000000190000-memory.dmp

    Filesize

    1024KB

  • memory/2180-53491-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/42756-53697-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53539-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53695-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53485-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53483-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53488-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53481-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53524-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53535-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53694-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53487-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/42756-53489-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53543-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53541-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53696-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-53490-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/42756-53699-0x0000000002700000-0x0000000002752000-memory.dmp

    Filesize

    328KB

  • memory/42756-106989-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/43560-53544-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/43560-53700-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/43560-106984-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/117116-106999-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/117232-106983-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB