Overview

overview

10

Static

static

10

3641b09bf6...45.exe

windows7_x64

9

3641b09bf6...45.exe

windows10_x64

9

Analysis

  • max time kernel
    156s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 02:17

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General

  • Target

    3641b09bf6eae22579d4fd5aae420476a134f5948966944189a70afd8032cb45.exe

  • Size

    1MB

  • MD5

    bed6fc04aeb785815744706239a1f243

  • SHA1

    3d0649b5f76dbbff9f86b926afbd18ae028946bf

  • SHA256

    3641b09bf6eae22579d4fd5aae420476a134f5948966944189a70afd8032cb45

  • SHA512

    1ed873577545dc52ffe3516b10848a0474c7f30dbaeed95c67b9b5a690acf4045c05114231dc4350e60219dea00a7e2be4cedc81a9e8655de59831ac09f53100

Score
9/10
ransomware

Malware Config

Signatures

  • Deletes shadow copies ⋅ 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Enumerates connected drives ⋅ 3 TTPs 24 IoCs

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

  • Drops file in Windows directory ⋅ 64 IoCs
  • Enumerates physical storage devices ⋅ 1 TTPs

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

  • Interacts with shadow copies ⋅ 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies data under HKEY_USERS ⋅ 3 IoCs
  • Suspicious behavior: EnumeratesProcesses ⋅ 1 IoCs
  • Suspicious use of AdjustPrivilegeToken ⋅ 3 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3641b09bf6eae22579d4fd5aae420476a134f5948966944189a70afd8032cb45.exe
    "C:\Users\Admin\AppData\Local\Temp\3641b09bf6eae22579d4fd5aae420476a134f5948966944189a70afd8032cb45.exe"
    Enumerates connected drives
    Drops file in Windows directory
    Modifies data under HKEY_USERS
    Suspicious behavior: EnumeratesProcesses
    Suspicious use of WriteProcessMemory
    PID:864
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures
      Suspicious use of WriteProcessMemory
      PID:1392
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin.exe Delete Shadows /All /Quiet
        Interacts with shadow copies
        PID:276
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    Suspicious use of AdjustPrivilegeToken
    PID:1092

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

        Discovery

        Execution

          Exfiltration

            Impact

            Initial Access

              Lateral Movement

                Persistence

                  Privilege Escalation

                    Replay Monitor

                    00:00 00:00

                    Downloads

                    • memory/864-55-0x0000000075421000-0x0000000075423000-memory.dmp
                      Filesize

                      8KB

                      Download
                    • memory/864-57-0x0000000000230000-0x000000000023A000-memory.dmp
                      Filesize

                      40KB

                      Download
                    • memory/864-58-0x0000000000240000-0x0000000000241000-memory.dmp
                      Filesize

                      4KB

                      Download
                    • memory/864-59-0x0000000000250000-0x0000000000251000-memory.dmp
                      Filesize

                      4KB

                      Download
                    • memory/864-60-0x00000000002A0000-0x00000000002A1000-memory.dmp
                      Filesize

                      4KB

                      Download
                    • memory/864-61-0x0000000002260000-0x00000000022FF000-memory.dmp
                      Filesize

                      636KB

                      Download
                    • memory/864-62-0x0000000002300000-0x000000000242D000-memory.dmp
                      Filesize

                      1MB

                      Download
                    • memory/864-63-0x00000000002F0000-0x000000000030F000-memory.dmp
                      Filesize

                      124KB

                      Download
                    • memory/864-65-0x00000000002B0000-0x00000000002B6000-memory.dmp
                      Filesize

                      24KB

                      Download
                    • memory/864-64-0x0000000002700000-0x0000000002809000-memory.dmp
                      Filesize

                      1MB

                      Download