Analysis

  • max time kernel
    70s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 15:23

General

  • Target

    8547bfc210914196a129e806728296ca.exe

  • Size

    390KB

  • MD5

    8547bfc210914196a129e806728296ca

  • SHA1

    ea54c21ecfd461d7e19d5ba06d6194e2d9c45d4d

  • SHA256

    27051adfee7b49d84fb4a5a67808114d53bcdc81041f991b9aed2ddff06a716c

  • SHA512

    d40afa35d508767ffbf077e707b08ae7ca0b1a9aaec188f9d1fa422dccce1ccce137fc4fbbf4f289c1faba762a3978413ace8f3ba59ceb7300aaea20f554f5e0

Score
7/10

Malware Config

Signatures

  • 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\8547bfc210914196a129e806728296ca.exe
    "C:\Users\Admin\AppData\Local\Temp\8547bfc210914196a129e806728296ca.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2104
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 700
      2⤵
      • Program crash
      PID:2640
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 768
      2⤵
      • Program crash
      PID:4980
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 940
      2⤵
      • Program crash
      PID:4956
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 764
      2⤵
      • Program crash
      PID:3088
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 764
      2⤵
      • Program crash
      PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 952
      2⤵
      • Program crash
      PID:4296
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "8547bfc210914196a129e806728296ca.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\8547bfc210914196a129e806728296ca.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2160
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "8547bfc210914196a129e806728296ca.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1292
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 1008
      2⤵
      • Program crash
      PID:1432
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2104 -ip 2104
    1⤵
      PID:2792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2104 -ip 2104
      1⤵
        PID:2836
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2104 -ip 2104
        1⤵
          PID:4248
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2104 -ip 2104
          1⤵
            PID:3572
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2104 -ip 2104
            1⤵
              PID:2588
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2104 -ip 2104
              1⤵
                PID:5040
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 2104 -ip 2104
                1⤵
                  PID:4944

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • memory/1292-134-0x0000000000000000-mapping.dmp

                • memory/2104-130-0x0000000000592000-0x00000000005B8000-memory.dmp

                  Filesize

                  152KB

                • memory/2104-131-0x00000000020B0000-0x00000000020EF000-memory.dmp

                  Filesize

                  252KB

                • memory/2104-132-0x0000000000400000-0x00000000004A3000-memory.dmp

                  Filesize

                  652KB

                • memory/2160-133-0x0000000000000000-mapping.dmp