Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2024 20:11

General

  • Target

    175fbd495e1e67dc9e90b8e9b1f77ca5d89adbde3bf3ffae9bd5ecbe53750e27.exe

  • Size

    1.2MB

  • MD5

    5e7ddeea0fe1a35171d3fd5f20be44b2

  • SHA1

    815909a17584b54daf22e8180da126dad145f003

  • SHA256

    175fbd495e1e67dc9e90b8e9b1f77ca5d89adbde3bf3ffae9bd5ecbe53750e27

  • SHA512

    6825218feb64830a66b5e6211fe5a372b2bc2da7625f43647b8037f082adb62110ef671e186cd0c1be3b993a1072439319d23a70b4683ea3a85ca90ba67b2d5c

  • SSDEEP

    24576:ypni2fBswduqbfaK3jnqPhoRiWkClW1mTy+dGMH43ybCYvWT4kq0E2Itf9fNXp:wiKswUqr37QhoRZpTyV6IyGYO8Tntf9X

Malware Config

Extracted

Family

gcleaner

C2

85.31.45.39

85.31.45.250

85.31.45.251

85.31.45.88

Attributes
  • url_path

    /b.php

    /d.php

    /d.php

Signatures

  • GCleaner

    GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

  • Gcleaner family
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 64 IoCs
  • Runs net.exe
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\175fbd495e1e67dc9e90b8e9b1f77ca5d89adbde3bf3ffae9bd5ecbe53750e27.exe
    "C:\Users\Admin\AppData\Local\Temp\175fbd495e1e67dc9e90b8e9b1f77ca5d89adbde3bf3ffae9bd5ecbe53750e27.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3368
    • C:\Users\Admin\AppData\Local\Temp\is-ADQ14.tmp\is-A2RVQ.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ADQ14.tmp\is-A2RVQ.tmp" /SL4 $D003E "C:\Users\Admin\AppData\Local\Temp\175fbd495e1e67dc9e90b8e9b1f77ca5d89adbde3bf3ffae9bd5ecbe53750e27.exe" 970734 84480
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4148
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 31
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 31
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1204
      • C:\Program Files (x86)\CLmeil\ckmeil525.exe
        "C:\Program Files (x86)\CLmeil\ckmeil525.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4120

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\CLmeil\ckmeil525.exe

    Filesize

    1.8MB

    MD5

    0fb884732a9352f9e999b9467d34443d

    SHA1

    1a4ca64b9ec479dc92f6f2621a3c9fb971c9a1bf

    SHA256

    d26abdc0730520eed70527225776aff8b03c6af1cf87f7045a5110fbf7abbef5

    SHA512

    9119fd58ba93cd49e6877fb901d6a44589471aa911c02559bf0805626c6c8e408771d89bb81ad8d691c315bc1868bf6dc25bb9bbe1be160313637d00567ccfb9

  • C:\Program Files (x86)\Common Files\Outlook Security Manager\secman.dll

    Filesize

    137KB

    MD5

    ccad5c9028897be6f9ea4506772232fb

    SHA1

    20b74651813d446f98ac839dbbfc941707f3951d

    SHA256

    7c35caf0274232e4fbe501df3a24cb282bfe7c3d052bc50a388fd9a59de7b494

    SHA512

    50df823a32103e369320b66d746a0592a208fcf3cb2f90f874afb6b5ca9e1e515139f65f7477e5a322ade51683f778b6eea65af2250fd8ddd29f67fd60a5a8ca

  • C:\Users\Admin\AppData\Local\Temp\is-ADQ14.tmp\is-A2RVQ.tmp

    Filesize

    676KB

    MD5

    d96f2e5b808c06c617d6d0be160b76f9

    SHA1

    1ae85eccf0834ee53b4a7fd44e06ec666caea838

    SHA256

    e8acb5a41fcb5eb6f87c4f253bfa66c85bf6796e5ae8e86083b2ab3adf7b5f5e

    SHA512

    b9dc562c2580ca857a93f514894b10dc5c7c076abc43b7567448ef0a86fea1af92b481d5d85a46c1bc0789f0e82d688a43ffcff73160ae571ea82a3b8496b1ab

  • C:\Users\Admin\AppData\Local\Temp\is-KH2BM.tmp\_iscrypt.dll

    Filesize

    2KB

    MD5

    a69559718ab506675e907fe49deb71e9

    SHA1

    bc8f404ffdb1960b50c12ff9413c893b56f2e36f

    SHA256

    2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

    SHA512

    e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

  • memory/3368-2-0x0000000000401000-0x000000000040A000-memory.dmp

    Filesize

    36KB

  • memory/3368-0-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3368-58-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3368-50-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4120-43-0x0000000000400000-0x00000000013CE000-memory.dmp

    Filesize

    15.8MB

  • memory/4120-44-0x0000000000400000-0x00000000013CE000-memory.dmp

    Filesize

    15.8MB

  • memory/4120-45-0x0000000000400000-0x00000000013CE000-memory.dmp

    Filesize

    15.8MB

  • memory/4120-55-0x0000000000400000-0x00000000013CE000-memory.dmp

    Filesize

    15.8MB

  • memory/4148-49-0x0000000000400000-0x00000000004D7000-memory.dmp

    Filesize

    860KB

  • memory/4148-32-0x0000000003570000-0x0000000003592000-memory.dmp

    Filesize

    136KB

  • memory/4148-57-0x0000000000400000-0x00000000004D7000-memory.dmp

    Filesize

    860KB

  • memory/4148-12-0x0000000000400000-0x00000000004D7000-memory.dmp

    Filesize

    860KB