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Analysis

  • max time kernel
    162s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/12/2023, 05:30

General

  • Target

    100866ba17da997902f151c321545421.exe

  • Size

    27KB

  • MD5

    100866ba17da997902f151c321545421

  • SHA1

    f9a7525b5db9f9eebe61569069be9ecc5741f781

  • SHA256

    0f761a060c842a652d54b7314db73fd650ae5b65b042ac59d03f9f8b867c35b8

  • SHA512

    3d9a2d565e4d74f0e00993fda030b1768b88e95e1d3d92f0354c0f0861c728c2f6c374318040d24710784dc65e957aecfc2d12437b0a9aaf6c6127b960c6671d

  • SSDEEP

    768:HiZun3CCvBYghyWyAd6DxgjP3zxeEX44jjte:Hz+gh9y1xY3zxNX4upe

Score
7/10
upx

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\100866ba17da997902f151c321545421.exe
    "C:\Users\Admin\AppData\Local\Temp\100866ba17da997902f151c321545421.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1012
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c rundll32 xpsp0res.dll,RundllInstall IPRIP
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2296
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32 xpsp0res.dll,RundllInstall IPRIP
        3⤵
        • Loads dropped DLL
        PID:2248
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2248 -s 632
          4⤵
          • Program crash
          PID:1652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c sc start iprip 'cmd /k whoami' 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1308
      • C:\Windows\SysWOW64\sc.exe
        sc start iprip 'cmd /k whoami' 1
        3⤵
        • Launches sc.exe
        PID:3112
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\100866~1.EXE > nul
      2⤵
        PID:4856
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2248 -ip 2248
      1⤵
        PID:3308

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windows\SysWOW64\xpsp0res.dll

        Filesize

        44KB

        MD5

        dd393f5b7b35a3aaf6af0c997f3c7ecb

        SHA1

        a6431c9e7b03b96e979e2cdbbcfd282bbf9e574e

        SHA256

        5515e4d7a30c611984f6128fb7d1b56e940fc4a1e6b8dca664d8b08375cfa75d

        SHA512

        371e99cee85f635d41028bc7de1d81e2d9778670f7f46c161289039ec95d225bb25a968599e0c978e9ea1ce91b1e7ae41cf0fcf8d7d90253266afa91d17a1e3e

      • memory/1012-0-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/1012-1-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB

      • memory/1012-3-0x0000000000400000-0x0000000000413000-memory.dmp

        Filesize

        76KB