Analysis

  • max time kernel
    146s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2023, 12:48

General

  • Target

    4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe

  • Size

    385KB

  • MD5

    34f8808d1a51641fac355ba5c92f7114

  • SHA1

    eb6774b48254e0b37f357dffb5ea620bc8cca5f3

  • SHA256

    4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f

  • SHA512

    dfff6523cf9393c3a9e41925c6a8905ea4be3155a46334193ed839b783288ed7ccb9fe946411d2c1e896eb839d8cb3e76ed1cadb1987f616fdede1940d2146a5

  • SSDEEP

    3072:t5uIKIRGXJuLGNafEnyKWus/1T6J2d+kVojCI40+/xJP92VBY3TQGcuD4EBWrFVU:YI6uLGcE70dpd+kVx1x/2VWxcu8sWR

Score
10/10

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

  • GCleaner

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

  • 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). Likely ransomware behaviour.

  • Program crash 7 IoCs
  • 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\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe
    "C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 732
      2⤵
      • Program crash
      PID:2000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 728
      2⤵
      • Program crash
      PID:3148
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 936
      2⤵
      • Program crash
      PID:1564
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 976
      2⤵
      • Program crash
      PID:1744
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 976
      2⤵
      • Program crash
      PID:3412
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 964
      2⤵
      • Program crash
      PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "4fbb67c0ef74f07ac1b31dba5d136938735bbd00544d27b4931a4a79e12f1f5f.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1180 -s 1136
      2⤵
      • Program crash
      PID:1176
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1180 -ip 1180
    1⤵
      PID:3892
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1180 -ip 1180
      1⤵
        PID:1560
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1180 -ip 1180
        1⤵
          PID:628
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1180 -ip 1180
          1⤵
            PID:4092
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1180 -ip 1180
            1⤵
              PID:448
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1180 -ip 1180
              1⤵
                PID:4244
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 1180 -ip 1180
                1⤵
                  PID:1836

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • memory/1180-134-0x0000000002C90000-0x0000000002CD0000-memory.dmp

                  Filesize

                  256KB

                • memory/1180-135-0x0000000000400000-0x0000000002BCE000-memory.dmp

                  Filesize

                  39.8MB