Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27-04-2024 01:20

General

  • Target

    41e187191625d749b89a11bc04fc0b2a3b9bd638035d05b39365c47ab36d1898.exe

  • Size

    194KB

  • MD5

    6fd558cf3add096970e15d1e62ca1957

  • SHA1

    78e95fabcfe8ef7bb6419f8456deccc3d5fa4c23

  • SHA256

    41e187191625d749b89a11bc04fc0b2a3b9bd638035d05b39365c47ab36d1898

  • SHA512

    fac7efe9b76f9b6a917f8751f5be64ad8e067e5404fe05f3e9d7781ea3661a06c0baaac676a6023eb4a0b7f01bc2bb2d64d572f85aec8ad8de35cc7f106e1fdc

  • SSDEEP

    3072:n6glyuxE4GsUPnliByocWepMhJL4BFkTGX:n6gDBGpvEByocWeyhJL4UK

Malware Config

Signatures

  • Renames multiple (323) 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
  • Enumerates physical storage devices 1 TTPs

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

  • 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\41e187191625d749b89a11bc04fc0b2a3b9bd638035d05b39365c47ab36d1898.exe
    "C:\Users\Admin\AppData\Local\Temp\41e187191625d749b89a11bc04fc0b2a3b9bd638035d05b39365c47ab36d1898.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:1044
    • C:\ProgramData\28A6.tmp
      "C:\ProgramData\28A6.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2792
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\28A6.tmp >> NUL
        3⤵
          PID:584
    • C:\Windows\system32\AUDIODG.EXE
      C:\Windows\system32\AUDIODG.EXE 0x14c
      1⤵
        PID:1120

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        129B

        MD5

        ca3b3054306d0b9b92af4d257924edb7

        SHA1

        bc5348365c661317e9d9e74ee1b703f866bfcc6e

        SHA256

        70214fba89b1ad785cf6fd6fa28ce4a7a3482b5ddf45eb258f506d83fc7048dd

        SHA512

        2b6c5f9242e54b2fa41c09c1a98aa7f03664df3475c1f4495c0ff4f01daa8ca1f285c906128d68d2b435587cbb48417308e2e057ed08b954e26496b2986cdec0

      • C:\AAtvmKv4L.README.txt

        Filesize

        434B

        MD5

        b4709a56b9d7f431da172316cda720be

        SHA1

        d2132f7129a7003ec4c0392f0f08cd24ea353da6

        SHA256

        192d1e6078570865531e8a4c9840a483c4a2ac35fe468107284991f6da813191

        SHA512

        e390d51e95db5e56c666a2895dc87dab41d97e7ce3c0df1f2466abf14a651167232521ab5f52746d16bab0ef14e6c0ee9dcfe29894604d695b0d064909378227

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

        Filesize

        194KB

        MD5

        210c3a8951586f6e929c53774dd11aa6

        SHA1

        8f60d38d57e1c7d11c8fc6070764598f50cdce4b

        SHA256

        b9783e82fb7bbc8fa1c9acd6886fe511874c056f469495c5e48b45d411d49296

        SHA512

        55648a3f9512acd31b9b4a7918e280bc05e16aed786536542944602eda6c316c15bd13d6c3b992daf3dc234c4e1952a92c4ab0393402f5c8bd2813647075d7a6

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

        Filesize

        129B

        MD5

        f0bf4a1e7bfffd9e5b9f7582fd509747

        SHA1

        b285da77adba9e8c84912a83c24c4eff11ef0851

        SHA256

        893fc0794e06108eb588809672fc5a8dad99819ef61bff08936aea9d57d2c4e5

        SHA512

        44a4df6f967b7f8c96a69b4ed4266f704cf253e027f066fae0a1d503336a204d6c6fd9e5481237f88ba2ad46ac9d63c425eb3753adbdb015ab3822a83d400523

      • \ProgramData\28A6.tmp

        Filesize

        14KB

        MD5

        294e9f64cb1642dd89229fff0592856b

        SHA1

        97b148c27f3da29ba7b18d6aee8a0db9102f47c9

        SHA256

        917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

        SHA512

        b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

      • memory/1044-0-0x0000000002140000-0x0000000002180000-memory.dmp

        Filesize

        256KB

      • memory/2792-835-0x000000007EF20000-0x000000007EF21000-memory.dmp

        Filesize

        4KB

      • memory/2792-834-0x000000007EF80000-0x000000007EF81000-memory.dmp

        Filesize

        4KB

      • memory/2792-833-0x0000000000440000-0x0000000000480000-memory.dmp

        Filesize

        256KB

      • memory/2792-831-0x000000007EFA0000-0x000000007EFA1000-memory.dmp

        Filesize

        4KB

      • memory/2792-832-0x0000000000440000-0x0000000000480000-memory.dmp

        Filesize

        256KB

      • memory/2792-865-0x000000007EF60000-0x000000007EF61000-memory.dmp

        Filesize

        4KB

      • memory/2792-864-0x000000007EF40000-0x000000007EF41000-memory.dmp

        Filesize

        4KB