Analysis

  • max time kernel
    122s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    03-10-2023 15:09

General

  • Target

    setup_free.exe

  • Size

    749.7MB

  • MD5

    e2fbe0199c7c92a1ce73dbf6b59e7c53

  • SHA1

    d825cfdb3220569ff7a30192c818902cd07520e3

  • SHA256

    5bfb996cc62444c0d05f28d7353975a01ea108ceb217dfea137b15aa87d8347b

  • SHA512

    33b2129db7edfebb049e45ec709f85b83db8d54f49aff51dabb53c347133aeeeb963dc371810442623241125a9e331570bde896d59335be44a3adae41f96c9cb

  • SSDEEP

    393216:4CliQO2uVUq5JHoOwJNiuMjT80LstQOjHFJ1eui:diQO2KJHEJ2T8WstQOjHFJe

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup_free.exe
    "C:\Users\Admin\AppData\Local\Temp\setup_free.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:340
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c schtasks /create /tn \Service\Data /tr """"C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe""" """C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.dat"""" /st 00:01 /du 9800:59 /sc once /ri 1 /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /tn \Service\Data /tr """"C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe""" """C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.dat"""" /st 00:01 /du 9800:59 /sc once /ri 1 /f
        3⤵
        • Creates scheduled task(s)
        PID:2720
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {077B11EB-5CE4-4384-9072-D6F801C52EF2} S-1-5-21-2180306848-1874213455-4093218721-1000:XEBBURHY\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2712
    • C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe
      C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe "C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.dat"
      2⤵
      • Executes dropped EXE
      PID:2824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.dat

    Filesize

    60KB

    MD5

    7024ffc5dce0e1bd0ca2ad58305d340a

    SHA1

    ac42af84716d876316f0afa99d330ad388872862

    SHA256

    1233b4bb895cca413f97d2939f79cea8fefaf52d4d077fdba95f54b4b423f9e2

    SHA512

    d000b978d83f6e783de36f74126cde0258ffc3abcfaee062e55c205be75e4ee5f94f50ccaf67998ce1a19c94b3123ac0ee540d1914faaba0e14aebfa33881ccb

  • C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe

    Filesize

    925KB

    MD5

    0adb9b817f1df7807576c2d7068dd931

    SHA1

    4a1b94a9a5113106f40cd8ea724703734d15f118

    SHA256

    98e4f904f7de1644e519d09371b8afcbbf40ff3bd56d76ce4df48479a4ab884b

    SHA512

    883aa88f2dba4214bb534fbdaf69712127357a3d0f5666667525db3c1fa351598f067068dfc9e7c7a45fed4248d7dca729ba4f75764341e47048429f9ca8846a

  • C:\Users\Admin\AppData\Roaming\ServiceData\Kavagob.exe

    Filesize

    925KB

    MD5

    0adb9b817f1df7807576c2d7068dd931

    SHA1

    4a1b94a9a5113106f40cd8ea724703734d15f118

    SHA256

    98e4f904f7de1644e519d09371b8afcbbf40ff3bd56d76ce4df48479a4ab884b

    SHA512

    883aa88f2dba4214bb534fbdaf69712127357a3d0f5666667525db3c1fa351598f067068dfc9e7c7a45fed4248d7dca729ba4f75764341e47048429f9ca8846a

  • memory/340-0-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/340-2-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/340-5-0x00000000778E0000-0x00000000778E1000-memory.dmp

    Filesize

    4KB

  • memory/340-4-0x0000000000020000-0x0000000000021000-memory.dmp

    Filesize

    4KB

  • memory/340-6-0x0000000000030000-0x0000000000031000-memory.dmp

    Filesize

    4KB

  • memory/340-8-0x0000000000030000-0x0000000000031000-memory.dmp

    Filesize

    4KB

  • memory/340-10-0x0000000000030000-0x0000000000031000-memory.dmp

    Filesize

    4KB

  • memory/340-11-0x0000000000400000-0x0000000001400000-memory.dmp

    Filesize

    16.0MB