Analysis

  • max time kernel
    96s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-09-2024 21:11

General

  • Target

    univ.exe

  • Size

    447KB

  • MD5

    877578aa859949f65846c834ce2740a1

  • SHA1

    948c5764c2f4edae98c162cae1fc9839a9f2e1f2

  • SHA256

    dd116354036dca800f4b1be5fde7e338b6d647b468323d3df828a7180e110d96

  • SHA512

    07d1cbbe9b4bb338c961af05d5f6791e8f94d06aff642728a091f059e248e7f4f0e096d1b49c6f4a59ff063246fc61083a2b097132516bcf752d9822dd90335e

  • SSDEEP

    6144:zELuwysoySGLobNl2kVJIkGd6tWqnb0FyggNifGi/1oD5zlW5FXCnFk:zszysoydLobZVJIkGdSwyNMS5hoSC

Malware Config

Extracted

Family

gcleaner

C2

80.66.75.114

45.91.200.135

Signatures

  • GCleaner

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

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 9 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\univ.exe
    "C:\Users\Admin\AppData\Local\Temp\univ.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2700
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 456
      2⤵
      • Program crash
      PID:3336
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 768
      2⤵
      • Program crash
      PID:2636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 788
      2⤵
      • Program crash
      PID:3296
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 828
      2⤵
      • Program crash
      PID:3512
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 788
      2⤵
      • Program crash
      PID:636
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 928
      2⤵
      • Program crash
      PID:1116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 928
      2⤵
      • Program crash
      PID:1816
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 1580
      2⤵
      • Program crash
      PID:2328
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "univ.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\univ.exe" & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "univ.exe" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 1608
      2⤵
      • Program crash
      PID:4220
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2700 -ip 2700
    1⤵
      PID:3332
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2700 -ip 2700
      1⤵
        PID:4252
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 2700 -ip 2700
        1⤵
          PID:1800
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2700 -ip 2700
          1⤵
            PID:3208
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2700 -ip 2700
            1⤵
              PID:1652
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2700 -ip 2700
              1⤵
                PID:3564
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2700 -ip 2700
                1⤵
                  PID:4708
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 2700 -ip 2700
                  1⤵
                    PID:4636
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2700 -ip 2700
                    1⤵
                      PID:1052

                    Network

                    MITRE ATT&CK Enterprise v15

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

                    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\KDOTUZKP\download[1].htm

                      Filesize

                      1B

                      MD5

                      cfcd208495d565ef66e7dff9f98764da

                      SHA1

                      b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

                      SHA256

                      5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

                      SHA512

                      31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

                    • memory/2700-1-0x00000000025D0000-0x00000000026D0000-memory.dmp

                      Filesize

                      1024KB

                    • memory/2700-2-0x00000000041F0000-0x000000000422B000-memory.dmp

                      Filesize

                      236KB

                    • memory/2700-3-0x0000000000400000-0x000000000043F000-memory.dmp

                      Filesize

                      252KB

                    • memory/2700-8-0x0000000010000000-0x000000001001C000-memory.dmp

                      Filesize

                      112KB

                    • memory/2700-13-0x00000000025D0000-0x00000000026D0000-memory.dmp

                      Filesize

                      1024KB

                    • memory/2700-16-0x00000000041F0000-0x000000000422B000-memory.dmp

                      Filesize

                      236KB

                    • memory/2700-15-0x0000000000400000-0x0000000002488000-memory.dmp

                      Filesize

                      32.5MB

                    • memory/2700-17-0x0000000000400000-0x000000000043F000-memory.dmp

                      Filesize

                      252KB

                    • memory/2700-29-0x0000000000400000-0x0000000002488000-memory.dmp

                      Filesize

                      32.5MB

                    • memory/2700-36-0x0000000000400000-0x000000000043F000-memory.dmp

                      Filesize

                      252KB

                    • memory/2700-35-0x0000000000400000-0x0000000002488000-memory.dmp

                      Filesize

                      32.5MB