Analysis

  • max time kernel
    158s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 06:21

General

  • Target

    5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe

  • Size

    443KB

  • MD5

    5f2d4cc6962b940f3e773e11c86d00cd

  • SHA1

    309e3fd0ed83381cf40e1b3f01b0edbef0563a13

  • SHA256

    5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0

  • SHA512

    f3871857c3c6806e1da7e0b391f281fffc93a111072e8b978cef75141c8012b1bab0019d717dfc80b912f8f47357a057ca3ec2a14faf8c2d93fa1f2426518ce4

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 8 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\5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe
    "C:\Users\Admin\AppData\Local\Temp\5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4988
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 612
      2⤵
      • Program crash
      PID:4336
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 632
      2⤵
      • Program crash
      PID:4540
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 716
      2⤵
      • Program crash
      PID:2456
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 724
      2⤵
      • Program crash
      PID:3612
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 724
      2⤵
      • Program crash
      PID:1848
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 1092
      2⤵
      • Program crash
      PID:1928
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 1220
      2⤵
      • Program crash
      PID:736
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4164
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "5f8160c6b2a2e6bb7c4555fc6bf61865a26674963f826d0e556ef5f4e97e3ec0.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3504
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4988 -s 1392
      2⤵
      • Program crash
      PID:4180
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4988 -ip 4988
    1⤵
      PID:5104
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4988 -ip 4988
      1⤵
        PID:2556
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 4988 -ip 4988
        1⤵
          PID:1812
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4988 -ip 4988
          1⤵
            PID:3660
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4988 -ip 4988
            1⤵
              PID:3552
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4988 -ip 4988
              1⤵
                PID:1880
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4988 -ip 4988
                1⤵
                  PID:1268
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4988 -ip 4988
                  1⤵
                    PID:1276

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/3504-134-0x0000000000000000-mapping.dmp

                  • memory/4164-133-0x0000000000000000-mapping.dmp

                  • memory/4988-130-0x0000000000F2E000-0x0000000000F56000-memory.dmp

                    Filesize

                    160KB

                  • memory/4988-131-0x00000000028B0000-0x00000000028F6000-memory.dmp

                    Filesize

                    280KB

                  • memory/4988-132-0x0000000000400000-0x0000000000C4B000-memory.dmp

                    Filesize

                    8.3MB