Overview

overview

10

Static

static

SPECIFICATIONS.exe

windows7_x64

10

SPECIFICATIONS.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    39s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:36

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General

  • Target

    SPECIFICATIONS.exe

  • Size

    878KB

  • MD5

    33c3551e8b1580ab7e9663b1c3e2c3f4

  • SHA1

    6bd58b98d73b7d34487254354dcf07ec3a7b31e1

  • SHA256

    ca946b7be994d2636254cb8b8cf44f5b7aa57fd705c6e07119aa4e68092daa01

  • SHA512

    ff0eb8d158175c6f7cccb28791a4c090d5e047d9d792bd5bcf1e863d9e8d8adf0d2cbd3d89967d2d67b0de8b6ab496175a680c000fd1cf7a375ac7dd23cf5f72

Score
10/10
coreentityevasionrezer0

Malware Config

Signatures

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    coreentity
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • ReZer0 packer 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

    rezer0
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
    "C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe"
    1⤵
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:336
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lXmVlPI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp73F9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1940
    • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
      "{path}"
      2⤵
        PID:692
      • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
        "{path}"
        2⤵
          PID:676
        • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
          "{path}"
          2⤵
            PID:1920
          • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
            "{path}"
            2⤵
              PID:576
            • C:\Users\Admin\AppData\Local\Temp\SPECIFICATIONS.exe
              "{path}"
              2⤵
                PID:1740

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Initial Access

            Execution

            Scheduled Task

            1
            T1053

            Persistence

            Scheduled Task

            1
            T1053

            Privilege Escalation

            Scheduled Task

            1
            T1053

            Defense Evasion

            Virtualization/Sandbox Evasion

            2
            T1497

            Credential Access

            Discovery

            Query Registry

            4
            T1012

            Virtualization/Sandbox Evasion

            2
            T1497

            System Information Discovery

            3
            T1082

            Peripheral Device Discovery

            1
            T1120

            Lateral Movement

            Collection

            Exfiltration

            Command and Control

            Impact

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmp73F9.tmp
              Filesize

              1KB

              MD5

              b502c66dda59daefe9485f4eb4018044

              SHA1

              6fe6ee6b9821206704fb3b521217158b67a394ce

              SHA256

              1175211b278d1294c6d5e4214bbf53463c40ed82ba382aaff848846864a81033

              SHA512

              9d0b75afe759250e966ba1ffb27e650f97e7299133b383537dc6a6d82bf737c811e9b695f6387640e751e5708a0725e89eef5e06526f6738651f514b40041aaf

              Download Submit
            • memory/336-54-0x00000000003E0000-0x00000000004C2000-memory.dmp
              Filesize

              904KB

              Download
            • memory/336-55-0x0000000075711000-0x0000000075713000-memory.dmp
              Filesize

              8KB

              Download
            • memory/336-56-0x00000000004E0000-0x00000000004E8000-memory.dmp
              Filesize

              32KB

              Download
            • memory/336-57-0x0000000005CE0000-0x0000000005D8E000-memory.dmp
              Filesize

              696KB

              Download
            • memory/1940-58-0x0000000000000000-mapping.dmp
              Download