Resubmissions

07/03/2025, 19:43

250307-yfp5pavye1 10

07/03/2025, 19:34

250307-x958bswky3 10

07/03/2025, 19:02

250307-xpxqfsvvbv 10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2025, 19:34

General

  • Target

    JaffaCakes118_58ef8399e896e60b181961292fb6d666.exe

  • Size

    1.2MB

  • MD5

    58ef8399e896e60b181961292fb6d666

  • SHA1

    d5b651f75234877814d8efabb6256fbc23c662ed

  • SHA256

    6deff5735317a9b7addf8d9f8d3aeca1de68364e63b69037b2c916bcaee44003

  • SHA512

    b9c4059148ff6ff96b376b69450a5234b4de8684ef41173601c24140da62a2b623f4117f5f483be478c9542be676cd705511d9540689b247cd44215b8c2f7b37

  • SSDEEP

    24576:D6t9iwCQliK/JJDORRrQl9uM1aIcLkNC2brX5qXI8PP:Wt9iwJTDOPsrNcwNbwxP

Malware Config

Extracted

Family

darkcomet

Botnet

enzcrash

C2

whatthe.no-ip.biz:1604

Mutex

DC_MUTEX-F54S21D

Attributes
  • InstallPath

    winupdate.exe

  • gencode

    =fgh�Num+Xi-

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Windows Updater

rc4.plain

Signatures

  • Blackshades

    Blackshades is a remote access trojan with various capabilities.

  • Blackshades family
  • Blackshades payload 13 IoCs
  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Hawkeye family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 16 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 20 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Delays execution with timeout.exe 2 IoCs
  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58ef8399e896e60b181961292fb6d666.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58ef8399e896e60b181961292fb6d666.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58ef8399e896e60b181961292fb6d666.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_58ef8399e896e60b181961292fb6d666.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:672
      • C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.EXE
        "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.EXE"
        3⤵
        • Adds policy Run key to start application
        • Boot or Logon Autostart Execution: Active Setup
        • Executes dropped EXE
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4980
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1096
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1164
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1808
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1552
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3276
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:3440
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\windowsupdate.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\windowsupdate.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1432
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\windowsupdate.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\windowsupdate.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Modifies registry key
            PID:1592
      • C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE
        "C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1420
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c timeout 5 && del C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4600
          • C:\Windows\SysWOW64\timeout.exe
            timeout 5
            5⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:3216
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
          PID:844
        • C:\Users\Admin\AppData\Roaming\winupdate.exe
          "C:\Users\Admin\AppData\Roaming\winupdate.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2968
          • C:\Users\Admin\AppData\Roaming\winupdate.exe
            "C:\Users\Admin\AppData\Roaming\winupdate.exe"
            4⤵
            • Modifies firewall policy service
            • Modifies security service
            • Windows security bypass
            • Disables RegEdit via registry modification
            • Checks BIOS information in registry
            • Checks computer location settings
            • Executes dropped EXE
            • Windows security modification
            • System Location Discovery: System Language Discovery
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            • System policy modification
            PID:1608
            • C:\Windows\SysWOW64\explorer.exe
              "C:\Windows\SysWOW64\explorer.exe"
              5⤵
                PID:1352
              • C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.EXE
                "C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.EXE"
                5⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious use of SetWindowsHookEx
                PID:3540
              • C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE
                "C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE"
                5⤵
                • Checks computer location settings
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:2948
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /c timeout 5 && del C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE
                  6⤵
                  • System Location Discovery: System Language Discovery
                  • Suspicious use of WriteProcessMemory
                  PID:3432
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 5
                    7⤵
                    • System Location Discovery: System Language Discovery
                    • Delays execution with timeout.exe
                    PID:4004

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\WINDOWSUPDATE.EXE

        Filesize

        163KB

        MD5

        24e2f8699579dc971a255076c08e829f

        SHA1

        5b45b15f4993d3112083b73806415d5eb587b9ea

        SHA256

        2a05046af890c5c4daa47277ccf630ac99228709ee489bd5517ba019fd0f5750

        SHA512

        de76329069c601feb874159360a28e3106dca47c05b069cb4c1d25e80a6fe7a44e6fa756a83c9f4d7da0b1f27628e389aaa60e2db7ae29d5e6d47537acce4a84

      • C:\Users\Admin\AppData\Local\Temp\WINUPDTR.EXE

        Filesize

        340KB

        MD5

        55642a17d2b2f4a3b0622380cbd7a398

        SHA1

        54a6f1c9d6f207af5dcea9557b420fade8a30f82

        SHA256

        c8bb9bc16ff8cebc7ec50e94c4d6ee1c884c5bbe57c61b5dde520e953845fca0

        SHA512

        83084e5595f4e5e226f4a924100b8f9d9707b15966aa54956a0169b84c1e852b55f82280f8f9014ec78ece6e151078aa51c4ae2e841f23a44b9c060ad24d0948

      • C:\Users\Admin\AppData\Roaming\chrtmp

        Filesize

        114KB

        MD5

        db78fd083bc8918ce8a2cc5cb79944db

        SHA1

        8887055003ce9177d6eab0f7a427f093e1746118

        SHA256

        c9bc9eba37de0346ed5661939e150bed121d880d563098857ca846bb854fb1ef

        SHA512

        cf8f216f2a851fb208f2f534efbcb64c60a4009683bdb10887426412ebe39fd7908ec8ac039d7fca5ac35f4d85a7698da5ac02b5350022096a47582a62c72666

      • C:\Users\Admin\AppData\Roaming\winupdate.exe

        Filesize

        1.2MB

        MD5

        58ef8399e896e60b181961292fb6d666

        SHA1

        d5b651f75234877814d8efabb6256fbc23c662ed

        SHA256

        6deff5735317a9b7addf8d9f8d3aeca1de68364e63b69037b2c916bcaee44003

        SHA512

        b9c4059148ff6ff96b376b69450a5234b4de8684ef41173601c24140da62a2b623f4117f5f483be478c9542be676cd705511d9540689b247cd44215b8c2f7b37

      • memory/672-1-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/672-2-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/672-3-0x0000000000850000-0x0000000000851000-memory.dmp

        Filesize

        4KB

      • memory/672-4-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/672-0-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/672-91-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-131-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-161-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-100-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-99-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-187-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-97-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-183-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-118-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-120-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-119-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-179-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-174-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-170-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-166-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-135-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-98-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-140-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-157-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-144-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-148-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/1608-153-0x0000000000400000-0x0000000000536000-memory.dmp

        Filesize

        1.2MB

      • memory/3540-117-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/3540-104-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-167-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-158-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-136-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-132-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-150-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-19-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-128-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-176-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-124-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-180-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-141-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-184-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB

      • memory/4980-154-0x0000000000400000-0x0000000000474000-memory.dmp

        Filesize

        464KB