Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-10-2024 05:25

General

  • Target

    22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe

  • Size

    146KB

  • MD5

    a7be144ff0b871ddd45e1e0bef06faa6

  • SHA1

    811797d3e0ce7c5ed76ff656156a2c066f306032

  • SHA256

    22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f

  • SHA512

    caeec8ed5080f00fe1134b968c81f13660ac1a9312d1f151b676f2a0b3670b2c0440e00c8a5e398d91707be5989d34e547ff3d5b4facbba81705c41f52bb3367

  • SSDEEP

    3072:46glyuxE4GsUPnliByocWep0AMmr7fTP+Gldf:46gDBGpvEByocWeRMa3P

Malware Config

Signatures

  • Renames multiple (339) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe
    "C:\Users\Admin\AppData\Local\Temp\22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2936
    • C:\ProgramData\DD93.tmp
      "C:\ProgramData\DD93.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:268
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\DD93.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1888
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x14c
    1⤵
      PID:2732

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini

      Filesize

      129B

      MD5

      9a6cf46146bedad4fa2f392c6a94e3fc

      SHA1

      ac748587834794b94bd0361c67f6c05e43470471

      SHA256

      3ce1aa053e12e270ba695e7a3202268f04224a0ad220bb1f5a585e2904998a4f

      SHA512

      2e097828b08a59570dc1e6ed4d99c193bdf5e03ea6ca3973e7db087282d4b0c0baab07dd7352676af900472344f0c8c81c3eb57caf55f32cc7c9a54121ed8bda

    • C:\OC9oMrMV8.README.txt

      Filesize

      343B

      MD5

      a8864aa0987b12bc59008a02c3ddda88

      SHA1

      54327dba296f734aae7ba65faf0b3dd8cb73b714

      SHA256

      168c71031668b64e0ccf26e81353f6eacb3599edbaf62f7aa62c55b8075a5a8f

      SHA512

      5a94b41a4f74354978c32dbe18d505bda8db0a0195f1df1749f81478c0bc0e022b744972f0c491a33b595fc9b21c7b5b59252ec5451b14cf15cbb6c936954dd8

    • C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

      Filesize

      146KB

      MD5

      a77a4b9baf97e6ed2fdc850f95118ce5

      SHA1

      f4b2b240817a462c6b5321b17438ed3f6879f022

      SHA256

      19bd89c24b1a14a414f2cf5d1c77022b8955485f993e7385fbeb2989b9bd7338

      SHA512

      c2fff38031b8240c2daf81e7181d721f6c90133d6e46ed5f7cb23d4ab910f512af9cd9f10477809ba1fbec1ae2d53ef29fac0deaa448aad863764d16321cea5c

    • F:\$RECYCLE.BIN\S-1-5-21-1488793075-819845221-1497111674-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      d5fc406c86d2c455f52b866029a5a902

      SHA1

      703e0888b9de3f980f3622a8fef8b6c555210a86

      SHA256

      e88d941ee5638b1ea9708bf634679450c9761c296df1b9c2ca7c6049f2054179

      SHA512

      210d5dd3612c35ce32e52a4b381c52e2d4ba69fe127f08735a021c6805cf9366939b29bff29012f941c48f5597e0422b927b0358c883293127370f0596599251

    • \ProgramData\DD93.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/268-876-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/268-875-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/268-874-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/268-872-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

    • memory/2936-0-0x0000000000C70000-0x0000000000CB0000-memory.dmp

      Filesize

      256KB