Overview

overview

10

Static

static

3

43f846c12c...fc.exe

windows7-x64

10

43f846c12c...fc.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    115s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2024 13:19

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General

  • Target

    43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe

  • Size

    55KB

  • MD5

    4e93c194b641d9b849f270531ec14d20

  • SHA1

    8b5a21254a0c10e3ca2570eeba490755197b544e

  • SHA256

    43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc

  • SHA512

    0c6dba53321b00a7b17bde84598de18cad9ecdae1a36209b6f13a99df96abe86987c2cbef132c6bc0ce80de75b4ad15351abd8c0c8e5c83bc17bb4f64713f2ec

  • SSDEEP

    1536:YNeRBl5PT/rx1mzwRMSTdLpJZtqoQOcO:YQRrmzwR5JAOF

Score
10/10
phobosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
    ransomwareevasion
  • Renames multiple (519) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 2 IoCs

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

    ransomware
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 42 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\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe
    "C:\Users\Admin\AppData\Local\Temp\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3512
    • C:\Users\Admin\AppData\Local\Temp\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe
      "C:\Users\Admin\AppData\Local\Temp\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe"
      2⤵
        PID:3180
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1580
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4796
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:5016
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2908
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4780
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:3148
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1788
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:1488
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:4992
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
        2⤵
          PID:4804
        • C:\Windows\SysWOW64\mshta.exe
          "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
          2⤵
            PID:5800
          • C:\Windows\SysWOW64\mshta.exe
            "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
            2⤵
              PID:4252
            • C:\Windows\SysWOW64\mshta.exe
              "C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
              2⤵
                PID:5520
              • C:\Windows\system32\cmd.exe
                "C:\Windows\system32\cmd.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:388
                • C:\Windows\system32\vssadmin.exe
                  vssadmin delete shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:6080
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic shadowcopy delete
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:3528
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} bootstatuspolicy ignoreallfailures
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:6124
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} recoveryenabled no
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:4020
                • C:\Windows\system32\wbadmin.exe
                  wbadmin delete catalog -quiet
                  3⤵
                  • Deletes backup catalog
                  PID:2108
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3920
            • C:\Windows\system32\wbengine.exe
              "C:\Windows\system32\wbengine.exe"
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3580
            • C:\Windows\System32\vdsldr.exe
              C:\Windows\System32\vdsldr.exe -Embedding
              1⤵
                PID:4084
              • C:\Windows\System32\vds.exe
                C:\Windows\System32\vds.exe
                1⤵
                • Checks SCSI registry key(s)
                PID:3572
              • C:\Windows\system32\wbem\wmiprvse.exe
                C:\Windows\system32\wbem\wmiprvse.exe -Embedding
                1⤵
                  PID:2908
                • C:\Windows\System32\mousocoreworker.exe
                  C:\Windows\System32\mousocoreworker.exe -Embedding
                  1⤵
                    PID:5016

                  Network

                  MITRE ATT&CK Enterprise v15

                  Reconnaissance

                  Resource Development

                  Initial Access

                  Execution

                  Command and Scripting Interpreter

                  1
                  T1059

                  Windows Management Instrumentation

                  1
                  T1047

                  Persistence

                  Boot or Logon Autostart Execution

                  1
                  T1547

                  Registry Run Keys / Startup Folder

                  1
                  T1547.001

                  Create or Modify System Process

                  1
                  T1543

                  Windows Service

                  1
                  T1543.003

                  Privilege Escalation

                  Boot or Logon Autostart Execution

                  1
                  T1547

                  Registry Run Keys / Startup Folder

                  1
                  T1547.001

                  Create or Modify System Process

                  1
                  T1543

                  Windows Service

                  1
                  T1543.003

                  Defense Evasion

                  Impair Defenses

                  1
                  T1562

                  Disable or Modify System Firewall

                  1
                  T1562.004

                  Indicator Removal

                  3
                  T1070

                  File Deletion

                  3
                  T1070.004

                  Modify Registry

                  1
                  T1112

                  Credential Access

                  Unsecured Credentials

                  1
                  T1552

                  Credentials In Files

                  1
                  T1552.001

                  Discovery

                  Peripheral Device Discovery

                  1
                  T1120

                  Query Registry

                  3
                  T1012

                  System Information Discovery

                  3
                  T1082

                  Lateral Movement

                  Collection

                  Data from Local System

                  1
                  T1005

                  Command and Control

                  Exfiltration

                  Impact

                  Inhibit System Recovery

                  4
                  T1490

                  Replay Monitor

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                  Downloads

                  • C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.id[F97B8EB9-2822].[[email protected]].eight
                    Filesize

                    2.7MB

                    MD5

                    55b9da489a09cbcc4d14614202513fc3

                    SHA1

                    0bdbd8c28594801842461c5021206a9a8cd98a2a

                    SHA256

                    c97babddf04d2fb92ce8fa2687a90e7a22dd0e56b45d841328a0dd5f3cbdc9d1

                    SHA512

                    ae1da3321cbef6faee7ddbcfae625fa821cf145ed3dd81d28278bf6f1483fae368a7b973c7b708f7702ba650eef77343787ad44029cdfe3c27c05b20bf689b37

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                  • C:\info.hta
                    Filesize

                    4KB

                    MD5

                    2788da9cfa30f7c1a58d0da83ff6854c

                    SHA1

                    efc4e449a4c07ae1b8c7eaac2680fef7856697e9

                    SHA256

                    d1fa3a4364b829de5d7ed8b842eca396632e70514f00589fc4a5690ca90d1d49

                    SHA512

                    3df46978dbba338d291fd23cc07cdf845ee4de337dbb8ed67de6ee74d7fc91efc0292487e100df6c94755da024c54130baee8e9355abf87ad4daeab275d730eb

                    Download Submit