Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25-04-2024 16:39

General

  • Target

    86e17aa882c690ede284f3e445439dfe589d8f36e31cbc09d102305499d5c498.exe

  • Size

    194KB

  • MD5

    ae811bd6440b425e6777f0ca001a9743

  • SHA1

    70902540ead269971e149eaff568fb17d04156af

  • SHA256

    86e17aa882c690ede284f3e445439dfe589d8f36e31cbc09d102305499d5c498

  • SHA512

    3617d8e77c221525125778cf64f2525136f7958766f5bed0fd7bfe00e7f738017d2840972acc628e4c3471b93cf6d52ccd619f49bdbbcff824c12cac8e1ea88e

  • SSDEEP

    3072:a6glyuxE4GsUPnliByocWepiHkZmlkQIQP6fo:a6gDBGpvEByocWeQwLAPm

Malware Config

Signatures

  • Renames multiple (283) 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
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • 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\86e17aa882c690ede284f3e445439dfe589d8f36e31cbc09d102305499d5c498.exe
    "C:\Users\Admin\AppData\Local\Temp\86e17aa882c690ede284f3e445439dfe589d8f36e31cbc09d102305499d5c498.exe"
    1⤵
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1600
    • C:\ProgramData\24B0.tmp
      "C:\ProgramData\24B0.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2436
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\24B0.tmp >> NUL
        3⤵
          PID:952
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x14c
      1⤵
        PID:448

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\$Recycle.Bin\S-1-5-21-3627615824-4061627003-3019543961-1000\desktop.ini

        Filesize

        129B

        MD5

        0b34181bcfe09148b24c0477fb1da182

        SHA1

        0d9458562022e6a509a41762acfc6f5e9ab15735

        SHA256

        b37732810e832001d1afd4e20eddebbec2bb8f3745638f3215f30dee86efbefd

        SHA512

        f9f44017ad5142ff2375155482d3187d025ea805b84037456bc65ec7f707e270cdd3c04e38bea37a39c519b2bf70e1e1667bfe2d0c7cc5eef848975bf9dff40c

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

        Filesize

        194KB

        MD5

        0f4f114b8a8624858eeaaf527c83da3e

        SHA1

        048bd5b30c54673eb89f574d8b8bc2d705a6a78f

        SHA256

        4f7397f95e210c55712548e882bbf025f48aa6bc2fac01341fa8f052230fa04b

        SHA512

        43c400e7817d191fb56fa85b3ac09513d0f0d199d68d016747a5f6a17663d6f1127bdf3278861efec40e8a7ecd26cc0dc3b308fda3e9ece7fc4fda70bb6b7953

      • C:\kZd6jLIwz.README.txt

        Filesize

        449B

        MD5

        c2f46db865b0ba6ef8f9385cf458a56e

        SHA1

        0b2f94fcf38ef15f59bb86a3296b7da514b4ac4e

        SHA256

        c25759e6083dd4bf592a6da2063c45def5adc9a6ef2ed15820128a0d838f70fe

        SHA512

        9927b209ca26e3243fac9f003c6af7663ba84405346fbdb66c6f401387cd20ea3f99d63d0858ebdc76f2e6bc722d41e2a1f599bc6f7d97b0687dba95dea31b39

      • F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\BBBBBBBBBBB

        Filesize

        129B

        MD5

        5c1ac8374e3f3754a418268b1820dbf6

        SHA1

        40d68e95794700c7639b08d8c2e318a444463696

        SHA256

        17c1c90d67554554654c6520aa0978e7318145858417b0df21aa3bddd1e1f0ba

        SHA512

        2612301756ae8a28354beae3fd9e311d1be6b2c05f4511bc1716d037bad696e55c723b2822332c639c10f29e5cf42a90769b71daff62d3e2c4546b55f3920990

      • \ProgramData\24B0.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • memory/1600-0-0x0000000000C10000-0x0000000000C50000-memory.dmp

        Filesize

        256KB

      • memory/2436-791-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

        Filesize

        4KB

      • memory/2436-792-0x0000000000350000-0x0000000000390000-memory.dmp

        Filesize

        256KB

      • memory/2436-796-0x000000007EF80000-0x000000007EF81000-memory.dmp

        Filesize

        4KB

      • memory/2436-797-0x000000007EF20000-0x000000007EF21000-memory.dmp

        Filesize

        4KB

      • memory/2436-823-0x000000007EF40000-0x000000007EF41000-memory.dmp

        Filesize

        4KB

      • memory/2436-824-0x000000007EF60000-0x000000007EF61000-memory.dmp

        Filesize

        4KB