Analysis

  • max time kernel
    120s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    22-10-2021 10:53

General

  • Target

    8efc94a68d078ed67459403c868aa9f0.exe

  • Size

    238KB

  • MD5

    8efc94a68d078ed67459403c868aa9f0

  • SHA1

    64da6737b14dc11fb68fe4aef22981219ecbfd9f

  • SHA256

    511f5c0a9946188ad3dbbb58c2e2e5564402d83dd77379a39c8a17c660a737da

  • SHA512

    5fd1f0fb7113d11e5ee7921581da43a4b04c2afeecca9fbd623cae5ef2b19955cd456fd7ac230eeab344e12e6452b780f616b90a00ccc1f1606a443a54f5a9f6

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8efc94a68d078ed67459403c868aa9f0.exe
    "C:\Users\Admin\AppData\Local\Temp\8efc94a68d078ed67459403c868aa9f0.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:852
    • C:\Users\Admin\AppData\Local\Temp\8efc94a68d078ed67459403c868aa9f0.exe
      "C:\Users\Admin\AppData\Local\Temp\8efc94a68d078ed67459403c868aa9f0.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 148
        3⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1548

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nst57E.tmp\edjaxef.dll
    MD5

    91b963a246288264ddf484d3b69741a1

    SHA1

    15168c8dd766c2046f891e085e08fae5a368665d

    SHA256

    8477871a37fc72bdc5eaec5d690e67421209e6fbeb3b6d278044de3686df650c

    SHA512

    99fd9259be65abef388a7763cbd7b3de5252bcd3827a36bf970989a73e87b76c35cfab6bc6c035057b5e1a78f924585577ffb9f88500fc300ed727955de72652

  • memory/852-54-0x00000000768C1000-0x00000000768C3000-memory.dmp
    Filesize

    8KB

  • memory/1548-66-0x0000000000000000-mapping.dmp
  • memory/1548-68-0x00000000002C0000-0x00000000002C1000-memory.dmp
    Filesize

    4KB

  • memory/1612-57-0x00000000001C0000-0x00000000001DB000-memory.dmp
    Filesize

    108KB

  • memory/1612-56-0x0000000000000000-mapping.dmp
  • memory/1612-61-0x00000000001C0000-0x00000000001DB000-memory.dmp
    Filesize

    108KB