Analysis

  • max time kernel
    91s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2022 18:23

General

  • Target

    c26f391d9ecdf9399637a7f4d3a443404167bb2623ed0273cbe7ba05d90ddfc3.exe

  • Size

    28KB

  • MD5

    b5ab26bfcdb6593eadb70c5d56a42a99

  • SHA1

    2ce2ca038845e7ad785e2be5998345509d7e7495

  • SHA256

    c26f391d9ecdf9399637a7f4d3a443404167bb2623ed0273cbe7ba05d90ddfc3

  • SHA512

    9376921244b8ea367b87b0b254071f0845d3e7b9236582ce13d8ba451f383569f40c7a8579301e5d36e3a19eeff4b8a2839846171f2cb8d7c67f1e96d0215666

  • SSDEEP

    768:kKTgr5vJB45jYJyVhfpd++pCeS/TKvYm8gld7Ff:k8yvn45ZD3pCzTKB/Bf

Score
9/10
upx

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • UPX packed file 5 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c26f391d9ecdf9399637a7f4d3a443404167bb2623ed0273cbe7ba05d90ddfc3.exe
    "C:\Users\Admin\AppData\Local\Temp\c26f391d9ecdf9399637a7f4d3a443404167bb2623ed0273cbe7ba05d90ddfc3.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5060
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\C26F39~1.EXE >> NUL
      2⤵
        PID:4344

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\EN7hzSreCat8.dll

      Filesize

      221KB

      MD5

      8eff27684cf5225720a48d22665eebdb

      SHA1

      52efcffe9bac095fb1771bb56b5041b0aab9cfd8

      SHA256

      dc90eaf1a0751abe895e612fab169354ac3cba0f0b84e0683d4b30292352b0e6

      SHA512

      8b3cc93254ccfdd9033a5070e303475f805dadbbd2a9fe9331e808df21384c78dace11401f075d46c0394d6bb34f8f07089eecc8e9780e82a023ca362fad8feb

    • memory/4344-135-0x0000000000000000-mapping.dmp

    • memory/5060-132-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/5060-134-0x0000000010000000-0x0000000010013000-memory.dmp

      Filesize

      76KB

    • memory/5060-136-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/5060-137-0x0000000010000000-0x0000000010013000-memory.dmp

      Filesize

      76KB