Overview

overview

8

Static

static

bce27c6583...1c.exe

windows7-x64

8

bce27c6583...1c.exe

windows10-2004-x64

1

Analysis

  • max time kernel
    52s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 06:14

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General

  • Target

    bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c.exe

  • Size

    609KB

  • MD5

    618ade4e630f0fc2563df1e2912301eb

  • SHA1

    cb678dd8e083f891afdfe9c6e7cffb787cc2f785

  • SHA256

    bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

  • SHA512

    e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

  • SSDEEP

    6144:Y5E6ftgX/kGMGOMtiRvbFzAgnCheJmA5ufN6igua+z4AswiZcaFxA:4V+IGOfzygnbJmA5ufjgua1waFxA

Score
8/10
bootkitpersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

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

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c.exe
    "C:\Users\Admin\AppData\Local\Temp\bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:1140
    • C:\Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
      "C:\Users\Admin\AppData\Local\Temp\Realtek_AC97.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Suspicious behavior: EnumeratesProcesses
      PID:1212
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1892
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1812
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:1956

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Execution

        Persistence

        Bootkit

        1
        T1067

        Privilege Escalation

        Defense Evasion

        Credential Access

        Discovery

        System Information Discovery

        1
        T1082

        Lateral Movement

        Collection

        Exfiltration

        Command and Control

        Impact

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
          Filesize

          609KB

          MD5

          618ade4e630f0fc2563df1e2912301eb

          SHA1

          cb678dd8e083f891afdfe9c6e7cffb787cc2f785

          SHA256

          bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

          SHA512

          e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

          Download Submit
        • \Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
          Filesize

          609KB

          MD5

          618ade4e630f0fc2563df1e2912301eb

          SHA1

          cb678dd8e083f891afdfe9c6e7cffb787cc2f785

          SHA256

          bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

          SHA512

          e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

          Download Submit
        • \Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
          Filesize

          609KB

          MD5

          618ade4e630f0fc2563df1e2912301eb

          SHA1

          cb678dd8e083f891afdfe9c6e7cffb787cc2f785

          SHA256

          bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

          SHA512

          e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

          Download Submit
        • \Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
          Filesize

          609KB

          MD5

          618ade4e630f0fc2563df1e2912301eb

          SHA1

          cb678dd8e083f891afdfe9c6e7cffb787cc2f785

          SHA256

          bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

          SHA512

          e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

          Download Submit
        • \Users\Admin\AppData\Local\Temp\Realtek_AC97.exe
          Filesize

          609KB

          MD5

          618ade4e630f0fc2563df1e2912301eb

          SHA1

          cb678dd8e083f891afdfe9c6e7cffb787cc2f785

          SHA256

          bce27c65838c7c49b49245c109978e2d012f4567cd938d020e747e3db847fa1c

          SHA512

          e8f5d4c51bb51d28a8ee1d459849c21f104545af11f83d12f624555b133f2d56e5c608185483cb00408ec5907d2ec4258488c9ec828c2cdf3b4905127217eb52

          Download Submit
        • memory/1140-54-0x0000000075F51000-0x0000000075F53000-memory.dmp
          Filesize

          8KB

          Download
        • memory/1140-55-0x0000000000400000-0x000000000051F9A0-memory.dmp
          Filesize

          1.1MB

          Download
        • memory/1212-60-0x0000000000000000-mapping.dmp
          Download