Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    17-09-2024 02:12

General

  • Target

    89862f1214998962cab6fb5fd76efe61.exe

  • Size

    146KB

  • MD5

    89862f1214998962cab6fb5fd76efe61

  • SHA1

    512bca951a384de28a897013876c8e2d105e8d25

  • SHA256

    8760d739b888902708d9e65193bf68f3d9a9e56de07f894a4c39615e66a52d64

  • SHA512

    6daf93be1808b8e9e17e28d96fb7b3ab2834c406c2d6319a87d136fd633ccfebea3fd305d0777223f0b5b7a5b61b93cf51964fbf90148f4e229edbf96558034a

  • SSDEEP

    3072:V6glyuxE4GsUPnliByocWepf7MInS0Slg:V6gDBGpvEByocWeRgdZ

Malware Config

Signatures

  • Renames multiple (334) 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 2 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
  • 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\89862f1214998962cab6fb5fd76efe61.exe
    "C:\Users\Admin\AppData\Local\Temp\89862f1214998962cab6fb5fd76efe61.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:2684
    • C:\ProgramData\D643.tmp
      "C:\ProgramData\D643.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:1904
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\D643.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2992
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x148
    1⤵
      PID:2692

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3290804112-2823094203-3137964600-1000\CCCCCCCCCCC

      Filesize

      129B

      MD5

      dd3f6f6a6bca6b0b810cc71472bac90d

      SHA1

      c3748c39221ed5a134887bf4e72892164e7ac741

      SHA256

      f968c0b26e98c99cc03e5f1af9ab244ad8658fd1a35451ab2ba2f7e1f899c516

      SHA512

      6ef0afbfe011e20d8960886461f4eb32ef6b924dc97e6f65558c746eea233a399a9d27449a685be338c4867d34e9bf5879f146c0d2cb7e520ec8077a9fda4b2c

    • C:\6XHjQ1c1S.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

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

      Filesize

      146KB

      MD5

      9d7caddb4ec8d09d946fe1c64edde33e

      SHA1

      c5449453b23bb4c90ae0d392f794d33da6e26900

      SHA256

      74450d17db920d8d4e019bb1915f7d60be75dca8a4da3341a7e8d2930f15ca99

      SHA512

      8eeea9c04b5136d669c2cb167d002fb744797814427f6397491a9abb9b464aee738ce790426bf2c0f7ccfca557622ec757a5874012b7495832b46844a3a80d05

    • F:\$RECYCLE.BIN\S-1-5-21-3290804112-2823094203-3137964600-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      cc94ebf3e898d262ed1ed12127db0a49

      SHA1

      a14d81a80a5311237d151a61e16bb11d1da0ba53

      SHA256

      023309c8fa0c37d9d527fc71574f6a0498410828cc59c8101f6730c9dc1b14bd

      SHA512

      fccb7d20857162eabfe1966633082be7b8687a0c07d80a6657781e41ef44897b7cb9d44003d4078229feb6d1a2d2315a87adb02802267fb40e536c8465690b00

    • \ProgramData\D643.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/1904-869-0x00000000004F0000-0x0000000000530000-memory.dmp

      Filesize

      256KB

    • memory/1904-872-0x000000007EF20000-0x000000007EF21000-memory.dmp

      Filesize

      4KB

    • memory/1904-871-0x000000007EF80000-0x000000007EF81000-memory.dmp

      Filesize

      4KB

    • memory/1904-870-0x00000000004F0000-0x0000000000530000-memory.dmp

      Filesize

      256KB

    • memory/1904-868-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

      Filesize

      4KB

    • memory/1904-902-0x000000007EF60000-0x000000007EF61000-memory.dmp

      Filesize

      4KB

    • memory/1904-901-0x000000007EF40000-0x000000007EF41000-memory.dmp

      Filesize

      4KB

    • memory/2684-0-0x00000000021E0000-0x0000000002220000-memory.dmp

      Filesize

      256KB