Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    12-03-2024 23:59

General

  • Target

    2499d5d48ef284b09ebe1e38f5cfcb3e4efb6e4cd5a5581883741b055ef7cc30.exe

  • Size

    2.0MB

  • MD5

    425879559fdb544b2b54453e5fb13103

  • SHA1

    7c211e335deb84ed2d8acac9463df66613e5eed2

  • SHA256

    2499d5d48ef284b09ebe1e38f5cfcb3e4efb6e4cd5a5581883741b055ef7cc30

  • SHA512

    d0d6a4dfaa4f876537403b4de7933349a5b43230e8ffd28f82fc78b685949522a51cb4f3fc1bad20e7fdb517c35b948b67bbbb90294d47277e7c3835268eb0be

  • SSDEEP

    49152:LKDgaduYnYSiCTgRNUaFW4NyoXiK87wLW2lD9z:jebiCTgXdD7yL7GrB

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 6 IoCs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2499d5d48ef284b09ebe1e38f5cfcb3e4efb6e4cd5a5581883741b055ef7cc30.exe
    "C:\Users\Admin\AppData\Local\Temp\2499d5d48ef284b09ebe1e38f5cfcb3e4efb6e4cd5a5581883741b055ef7cc30.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1244
    • C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1328
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\GHCGDAFCFH.exe"
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1836
        • C:\Users\Admin\AppData\Local\Temp\GHCGDAFCFH.exe
          "C:\Users\Admin\AppData\Local\Temp\GHCGDAFCFH.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2052
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\GHCGDAFCFH.exe
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3048
            • C:\Windows\SysWOW64\PING.EXE
              ping 2.2.2.2 -n 1 -w 3000
              6⤵
              • Runs ping.exe
              PID:2012
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HIIIECAAKE.exe"
        3⤵
          PID:1868
      • C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
        C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2444
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:788
          • C:\Windows\SysWOW64\chcp.com
            chcp 1251
            4⤵
              PID:2828
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
              4⤵
              • Creates scheduled task(s)
              PID:2788

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe

        Filesize

        1.6MB

        MD5

        9362c9bf051ce37dd81ce02dfa860ba1

        SHA1

        878192bc9b99bf5708d85da30f770cdffe4f7ba5

        SHA256

        b48e83906c1d634f4c82833293cde2d65b8db87c577722b5056f8fed79e19bf1

        SHA512

        6ca1378d49dce081896d6cccc6d94b5beeeca48aadf2c5543eaf62bbdb5796b2fad1f8a9ed0cc37ae00a7e229eeb3f077babbb5dcfcc778a12bd869036b23f1a

      • C:\Users\Admin\AppData\Local\Temp\GHCGDAFCFH.exe

        Filesize

        101KB

        MD5

        42b838cf8bdf67400525e128d917f6e0

        SHA1

        a578f6faec738912dba8c41e7abe1502c46d0cae

        SHA256

        0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

        SHA512

        f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

      • C:\Users\Admin\AppData\Roaming\Temp\Task.bat

        Filesize

        128B

        MD5

        11bb3db51f701d4e42d3287f71a6a43e

        SHA1

        63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

        SHA256

        6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

        SHA512

        907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

      • \ProgramData\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • \ProgramData\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • \Users\Admin\AppData\Local\Temp\BroomSetup.exe

        Filesize

        1.7MB

        MD5

        eee5ddcffbed16222cac0a1b4e2e466e

        SHA1

        28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

        SHA256

        2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

        SHA512

        8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

      • \Users\Admin\AppData\Local\Temp\nsi4C8C.tmp\INetC.dll

        Filesize

        21KB

        MD5

        2b342079303895c50af8040a91f30f71

        SHA1

        b11335e1cb8356d9c337cb89fe81d669a69de17e

        SHA256

        2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

        SHA512

        550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

      • \Users\Admin\AppData\Local\Temp\syncUpd.exe

        Filesize

        200KB

        MD5

        c722591f624fb69970f246b8c81d830f

        SHA1

        85516decea5d6987bebe39cbadf36053beaf4bb0

        SHA256

        13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a

        SHA512

        822584c5c8a0813af4d845e80919776c71a43464ab719d1c303ebaae6a8ed47763183566bedc9be2e8c44de8ee6fd62d1e12be471e5d5c73ae4b1dcdaa34a908

      • memory/1244-32-0x0000000004FD0000-0x0000000005500000-memory.dmp

        Filesize

        5.2MB

      • memory/1244-31-0x0000000000400000-0x000000000043D000-memory.dmp

        Filesize

        244KB

      • memory/1328-85-0x0000000000290000-0x0000000000390000-memory.dmp

        Filesize

        1024KB

      • memory/1328-123-0x0000000000290000-0x0000000000390000-memory.dmp

        Filesize

        1024KB

      • memory/1328-65-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-36-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1328-81-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-21-0x0000000000290000-0x0000000000390000-memory.dmp

        Filesize

        1024KB

      • memory/1328-122-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-91-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-23-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-22-0x00000000001B0000-0x00000000001D7000-memory.dmp

        Filesize

        156KB

      • memory/1328-111-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1328-117-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/1868-161-0x00000000022C0000-0x00000000022C1000-memory.dmp

        Filesize

        4KB

      • memory/2052-158-0x0000000000110000-0x000000000012E000-memory.dmp

        Filesize

        120KB

      • memory/2052-159-0x0000000072470000-0x0000000072B5E000-memory.dmp

        Filesize

        6.9MB

      • memory/2052-165-0x0000000004750000-0x0000000004790000-memory.dmp

        Filesize

        256KB

      • memory/2052-172-0x0000000072470000-0x0000000072B5E000-memory.dmp

        Filesize

        6.9MB

      • memory/2052-174-0x0000000004750000-0x0000000004790000-memory.dmp

        Filesize

        256KB

      • memory/2444-87-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/2444-34-0x0000000000400000-0x0000000000930000-memory.dmp

        Filesize

        5.2MB

      • memory/2444-77-0x0000000000400000-0x0000000000930000-memory.dmp

        Filesize

        5.2MB

      • memory/2444-35-0x0000000000240000-0x0000000000241000-memory.dmp

        Filesize

        4KB

      • memory/2444-171-0x0000000000400000-0x0000000000930000-memory.dmp

        Filesize

        5.2MB