Analysis

  • max time kernel
    119s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    01/12/2024, 10:51

General

  • Target

    b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abfN.exe

  • Size

    90KB

  • MD5

    b581236bd422bebc8c82f8a242632980

  • SHA1

    1cf31cbb7db115c54f0ccab8c1dd508ba52593eb

  • SHA256

    b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abf

  • SHA512

    d564f831d4923902e6d2688a9e37d2b8dc01eac5640bea438bf43e09630544aa6ba5ba5604de7bbc366a38bbba2d7779254e7df1fb467471d67e79fd769ca94e

  • SSDEEP

    1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDz:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE39

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Modiloader family
  • ModiLoader Second Stage 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • UPX packed file 22 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abfN.exe
    "C:\Users\Admin\AppData\Local\Temp\b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abfN.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Users\Admin\AppData\Local\Temp\b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abfN.exe
      "C:\Users\Admin\AppData\Local\Temp\b31b7f28ad485f2d38b313c41964ee9d89014e4f2e08941a2f59a06fed8f0abfN.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2596
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\YKSKT.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:2064
      • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1028
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2912
        • C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    145B

    MD5

    4eb61ec7816c34ec8c125acadc57ec1b

    SHA1

    b0015cc865c0bb1a027be663027d3829401a31cc

    SHA256

    08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

    SHA512

    f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

  • \Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

    Filesize

    90KB

    MD5

    b640aa8f0bf35cb3d13275c0aa748fb3

    SHA1

    70adb4d253803495ee03e039dbe720624a1a78a0

    SHA256

    43aadd81ec365783eaf4741b92ba58eed39afbba2cf52911613c7db51b3d265d

    SHA512

    c01b8be314dadbd6e86f32c424bdd2a911d1760f058cd9e79603b515dda605238b8eb3f004e905d51b72c332998f5c4f119526ffa8f0fee86199888d423bc745

  • memory/688-250-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/688-260-0x0000000000400000-0x0000000000414000-memory.dmp

    Filesize

    80KB

  • memory/1028-158-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/1028-168-0x00000000002A0000-0x00000000002A1000-memory.dmp

    Filesize

    4KB

  • memory/1028-221-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/1028-179-0x0000000000340000-0x0000000000341000-memory.dmp

    Filesize

    4KB

  • memory/1028-251-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-84-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-71-0x0000000000390000-0x0000000000391000-memory.dmp

    Filesize

    4KB

  • memory/2536-104-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-90-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-82-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-80-0x00000000003B0000-0x00000000003B2000-memory.dmp

    Filesize

    8KB

  • memory/2536-79-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-0-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-61-0x0000000000360000-0x0000000000361000-memory.dmp

    Filesize

    4KB

  • memory/2536-42-0x0000000000400000-0x0000000000453000-memory.dmp

    Filesize

    332KB

  • memory/2536-40-0x0000000000320000-0x0000000000321000-memory.dmp

    Filesize

    4KB

  • memory/2536-28-0x0000000000300000-0x0000000000301000-memory.dmp

    Filesize

    4KB

  • memory/2536-16-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2536-15-0x0000000000404000-0x0000000000405000-memory.dmp

    Filesize

    4KB

  • memory/2536-3-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2536-5-0x0000000000230000-0x0000000000231000-memory.dmp

    Filesize

    4KB

  • memory/2596-97-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-108-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-150-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-149-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-148-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-154-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-155-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-109-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-107-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-106-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-216-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-213-0x00000000032A0000-0x00000000032F3000-memory.dmp

    Filesize

    332KB

  • memory/2596-93-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-95-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-99-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2596-258-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2596-102-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2912-259-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB