Analysis

  • max time kernel
    200s
  • max time network
    232s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 06:21

General

  • Target

    a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe

  • Size

    218KB

  • MD5

    01234f83e249a01fbfab92904f81baa7

  • SHA1

    3936f61c42775c4b2f872b4827d04225da1bb10c

  • SHA256

    a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb

  • SHA512

    70b46671d4c98c12f1545bd22bd943ffd7d8c3651533203172128e598edd2ea425cee8d14024099cb706069db21ff0cc7e37aa48838005c1875c1104415f56ad

Score
10/10

Malware Config

Signatures

  • OnlyLogger

    A tiny loader that uses IPLogger to get its payload.

  • OnlyLogger Payload 2 IoCs
  • 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\a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe
    "C:\Users\Admin\AppData\Local\Temp\a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5048
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 628
      2⤵
      • Program crash
      PID:5112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 636
      2⤵
      • Program crash
      PID:5024
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 732
      2⤵
      • Program crash
      PID:224
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 832
      2⤵
      • Program crash
      PID:1088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1184
      2⤵
      • Program crash
      PID:4424
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1244
      2⤵
      • Program crash
      PID:4900
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1392
      2⤵
      • Program crash
      PID:4368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5068
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5048 -ip 5048
    1⤵
      PID:4616
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 5048 -ip 5048
      1⤵
        PID:4396
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 5048 -ip 5048
        1⤵
          PID:340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 5048 -ip 5048
          1⤵
            PID:4888
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 5048 -ip 5048
            1⤵
              PID:4408
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 5048 -ip 5048
              1⤵
                PID:1884
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 5048 -ip 5048
                1⤵
                  PID:2724
                • C:\Windows\SysWOW64\taskkill.exe
                  taskkill /im "a2a80c72ef8ba023278774d34b282c00ac5a6fae9dd90b4dfb387ab6cacb1cdb.exe" /f
                  1⤵
                  • Kills process with taskkill
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3752

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • memory/3752-134-0x0000000000000000-mapping.dmp

                • memory/5048-130-0x0000000001163000-0x000000000118B000-memory.dmp

                  Filesize

                  160KB

                • memory/5048-131-0x0000000001070000-0x00000000010B6000-memory.dmp

                  Filesize

                  280KB

                • memory/5048-132-0x0000000000400000-0x0000000000F94000-memory.dmp

                  Filesize

                  11.6MB

                • memory/5068-133-0x0000000000000000-mapping.dmp