Overview

overview

10

Static

static

3

41dbdaeb1d...xe.exe

windows7-x64

10

41dbdaeb1d...xe.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-01-2024 20:25

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General

  • Target

    41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eafexe.exe

  • Size

    56KB

  • MD5

    dc2d809e46c60ee990844ee7fbdc17cd

  • SHA1

    839ce9c0e3cab37d4de0b25460d9b0dc047bb2ae

  • SHA256

    41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eaf

  • SHA512

    0c3ddc1e5071a45b5c95165b655d1b0a1ba9538fd4066ec62a7904c60974671250b27634e29d35c08658936e3674683b990e3bbc81307ee5fbfce52a2df675c7

  • SSDEEP

    1536:UNeRBl5PT/rx1mzwRMSTdLpJPQG9TY28U:UQRrmzwR5Jop28U

Score
10/10
phobosevasionpersistenceransomware

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 1 TTPs 2 IoCs
    evasion
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eafexe.exe
    "C:\Users\Admin\AppData\Local\Temp\41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eafexe.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2804
    • C:\Users\Admin\AppData\Local\Temp\41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eafexe.exe
      "C:\Users\Admin\AppData\Local\Temp\41dbdaeb1dc8fe40358a5e168af596da85c6a84796e63c9d10c11f2077129eafexe.exe"
      2⤵
        PID:2612
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4032
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:3276
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:908
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3476
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3080
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3300
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:3216
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2348
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:3588
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4548
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3532
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3972
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1492

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\7-Zip\7-zip32.dll
        Filesize

        65KB

        MD5

        e5f729728ef63949ee08cdb344e199a0

        SHA1

        39869fb44914a7aa172a48342d39dbdfbda4d65c

        SHA256

        ce89fdff60df750b5f78ae42df37b822cd79add907d2c2e604fd906bb5f85bd2

        SHA512

        5fe6ac63731b9ad38f2b23c3e9ec7a89f8624a24056cb251ce7e08d18687cdd23f17818892b4e1234121001689da2864a61fb239b1e40d0252554c3048f0d9a7

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