Overview

overview

10

Static

static

3

43f846c12c...fc.exe

windows10-1703-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    23/07/2024, 07:50

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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_evasionevasionexecutionimpactpersistenceprivilege_escalationransomwarespywarestealer

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 (439) 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
  • 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 3 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⤵
    • 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:4864
    • C:\Users\Admin\AppData\Local\Temp\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe
      "C:\Users\Admin\AppData\Local\Temp\43f846c12c24a078ebe33f71e8ea3b4f75107aeb275e2c3cd9dc61617c9757fc.exe"
      2⤵
        PID:4912
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:640
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:336
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4308
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4164
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:3800
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:4688
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4020
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:2480
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:1980
      • 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:1588
        • 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:3176
          • 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:4368
            • 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:1612
              • C:\Windows\system32\cmd.exe
                "C:\Windows\system32\cmd.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:3828
                • C:\Windows\system32\vssadmin.exe
                  vssadmin delete shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:1548
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic shadowcopy delete
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4604
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} bootstatuspolicy ignoreallfailures
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:336
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} recoveryenabled no
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:3456
                • C:\Windows\system32\wbadmin.exe
                  wbadmin delete catalog -quiet
                  3⤵
                  • Deletes backup catalog
                  PID:2260
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1824
            • C:\Windows\system32\wbengine.exe
              "C:\Windows\system32\wbengine.exe"
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4100
            • C:\Windows\System32\vdsldr.exe
              C:\Windows\System32\vdsldr.exe -Embedding
              1⤵
                PID:2840
              • C:\Windows\System32\vds.exe
                C:\Windows\System32\vds.exe
                1⤵
                • Checks SCSI registry key(s)
                PID:3216
              • C:\Windows\SysWOW64\werfault.exe
                werfault.exe /h /shared Global\9a4347b07dc546cb8634e28c1d375359 /t 4552 /p 1588
                1⤵
                  PID:5056

                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

                Event Triggered Execution

                1
                T1546

                Netsh Helper DLL

                1
                T1546.007

                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

                Event Triggered Execution

                1
                T1546

                Netsh Helper DLL

                1
                T1546.007

                Defense Evasion

                Direct Volume Access

                1
                T1006

                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

                2
                T1012

                System Information Discovery

                2
                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[14DAB127-2822].[[email protected]].eight
                  Filesize

                  2.7MB

                  MD5

                  76efcdb2d23b5d429d3f26eb5a6e0239

                  SHA1

                  8a7e9735bdd660c51df9482e4d5916a15deae220

                  SHA256

                  f798ced117f7b911c1d527653d52b73d0c9bb7e06287374bd7889547b06f72cf

                  SHA512

                  90ccc6b6c738f3cf68d03e9df7a0015e6f5ec9522b39891f2277837c70d6aabb026a42e738f4d311eba9934763092ed9b54372ce2155bbb27cd47e604d902837

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                • C:\info.hta
                  Filesize

                  4KB

                  MD5

                  7e6751de60695c1ec19e526303d072b9

                  SHA1

                  6067691b17c3267947ab240245ca3861dace1f91

                  SHA256

                  1f50641e492996c0616d9354bb97b3c78f4c9fe2969625edde395d5b6b89e557

                  SHA512

                  313f479511c04380c6ed784882f6f242b6d9d529d7d4249a97aa68c1b1134440bd7110d7bdae77240007119380e8083e3f195154f4acf3649be83f93b716cf29

                  Download Submit