Overview

overview

10

Static

static

db_exec.exe

windows7_x64

10

db_exec.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    115s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    29-09-2020 10:31

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General

  • Target

    db_exec.exe

  • Size

    56KB

  • MD5

    57a5909170a0faee72e61ad2155fd3fc

  • SHA1

    f03548eb37425741e62b5f64914513f53b82f4f7

  • SHA256

    05eb6a100b33f2bcf48a1acaa989b96de246d09e6e8526de83a622ebe575d25f

  • SHA512

    a8237c539ea9d2145d8f1e77f81f4a5182da45e6f5a63c4d7f13560a336bfec75c825267de734bfd3c82fca7c9804f03d582bc1374357374fd660083f7dd0e74

Score
10/10
phobosevasionpersistenceransomwarespyware

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • 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
    evasion
  • Drops startup file 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spyware
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 6 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 51 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\db_exec.exe
    "C:\Users\Admin\AppData\Local\Temp\db_exec.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:3892
    • C:\Users\Admin\AppData\Local\Temp\db_exec.exe
      "C:\Users\Admin\AppData\Local\Temp\db_exec.exe"
      2⤵
        PID:1176
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2796
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2204
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3588
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2152
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1888
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1988
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2832
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
            PID:2596
          • C:\Windows\system32\netsh.exe
            netsh firewall set opmode mode=disable
            3⤵
              PID:2192
        • \??\c:\windows\system32\svchost.exe
          c:\windows\system32\svchost.exe -k netsvcs -s seclogon
          1⤵
          • Suspicious use of NtCreateUserProcessOtherParentProcess
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3224
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1516
        • C:\Windows\system32\wbengine.exe
          "C:\Windows\system32\wbengine.exe"
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1664
        • C:\Windows\System32\vdsldr.exe
          C:\Windows\System32\vdsldr.exe -Embedding
          1⤵
            PID:2036
          • C:\Windows\System32\vds.exe
            C:\Windows\System32\vds.exe
            1⤵
            • Checks SCSI registry key(s)
            PID:260

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Command-Line Interface

          1
          T1059

          Persistence

          Modify Existing Service

          1
          T1031

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          File Deletion

          3
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          Query Registry

          1
          T1012

          Peripheral Device Discovery

          1
          T1120

          System Information Discovery

          1
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          4
          T1490

          Replay Monitor

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          Downloads

          • memory/1176-0-0x0000000000000000-mapping.dmp
            Download
          • memory/1888-8-0x0000000000000000-mapping.dmp
            Download
          • memory/1988-9-0x0000000000000000-mapping.dmp
            Download
          • memory/2152-7-0x0000000000000000-mapping.dmp
            Download
          • memory/2192-5-0x0000000000000000-mapping.dmp
            Download
          • memory/2204-4-0x0000000000000000-mapping.dmp
            Download
          • memory/2596-3-0x0000000000000000-mapping.dmp
            Download
          • memory/2796-2-0x0000000000000000-mapping.dmp
            Download
          • memory/2832-1-0x0000000000000000-mapping.dmp
            Download
          • memory/3588-6-0x0000000000000000-mapping.dmp
            Download