Overview

overview

9

Static

static

1

file01.ps1

windows7-x64

9

Sharing

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General

  • Target

    file01.ps1

  • Size

    1B

  • Sample

    240509-lv927abf8z

  • MD5

    c4ca4238a0b923820dcc509a6f75849b

  • SHA1

    356a192b7913b04c54574d18c28d46e6395428ab

  • SHA256

    6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

  • SHA512

    4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Score
9/10
bootkitdiscoveryevasionexecutionpersistenceransomware

Malware Config

Targets

    • Target

      file01.ps1

    • Size

      1B

    • MD5

      c4ca4238a0b923820dcc509a6f75849b

    • SHA1

      356a192b7913b04c54574d18c28d46e6395428ab

    • SHA256

      6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

    • SHA512

      4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

    Score
    9/10
    bootkitdiscoveryevasionexecutionpersistenceransomware

    • Renames multiple (115) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Downloads MZ/PE file

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks