Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 10:18

General

  • Target

    JaffaCakes118_6bee3391e37c6e0715fbbae6a71de790.exe

  • Size

    522KB

  • MD5

    6bee3391e37c6e0715fbbae6a71de790

  • SHA1

    f8fc14887d13a9df24558d3cc927d420d3fa36d5

  • SHA256

    efbca39b8b35dd46e0d5a81a275a6bc67c705240c27c8f293af91baafc8a9c5a

  • SHA512

    cc2e5cb0dfc28c3f75db938535962b67b96c2ffd8d1a1ea14d97f3790c84d844ed17b064722308edefe539f376ba556b3beb5660f4dda5e2551662a948027a2b

  • SSDEEP

    12288:i6kHB9C+9s3WRQukIyYZcEzVzl4b4M05KxdlEGHuXmtbsL:q9sc2Ayq8001E6o

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 4 IoCs
  • Isrstealer family
  • Detected Nirsoft tools 1 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 1 IoCs

    Password recovery tool for various email clients

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • UPX packed file 9 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 12 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bee3391e37c6e0715fbbae6a71de790.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bee3391e37c6e0715fbbae6a71de790.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3936
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6bee3391e37c6e0715fbbae6a71de790.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\agpmgr.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1004
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\uxmplf40QQ.ini"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2120
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\arxn1Y1N8r.ini"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:2772
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4168
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2992
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v "Load" /d "cmd /c C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe" /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:624
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows" /v "Load" /d "cmd /c C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe" /f
            5⤵
            • System Location Discovery: System Language Discovery
            PID:1488
        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\agpmgr.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\agpmgr.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1876
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
            "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
            5⤵
              PID:4692
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe"
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:548
              • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe
                "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe"
                6⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:5036

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\wpasv.exe.log

      Filesize

      128B

      MD5

      a5dcc7c9c08af7dddd82be5b036a4416

      SHA1

      4f998ca1526d199e355ffb435bae111a2779b994

      SHA256

      e24033ceec97fd03402b03acaaabd1d1e378e83bb1683afbccac760e00f8ead5

      SHA512

      56035de734836c0c39f0b48641c51c26adb6e79c6c65e23ca96603f71c95b8673e2ef853146e87efc899dd1878d0bbc2c82d91fbf0fce81c552048e986f9bb5a

    • C:\Users\Admin\AppData\Local\Temp\uxmplf40QQ.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\agpmgr.exe

      Filesize

      522KB

      MD5

      6bee3391e37c6e0715fbbae6a71de790

      SHA1

      f8fc14887d13a9df24558d3cc927d420d3fa36d5

      SHA256

      efbca39b8b35dd46e0d5a81a275a6bc67c705240c27c8f293af91baafc8a9c5a

      SHA512

      cc2e5cb0dfc28c3f75db938535962b67b96c2ffd8d1a1ea14d97f3790c84d844ed17b064722308edefe539f376ba556b3beb5660f4dda5e2551662a948027a2b

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\wpasv.exe

      Filesize

      13KB

      MD5

      1a606d51e1ed097e36d3731097ae0f54

      SHA1

      8cb97f5279ab807741c989b62a88c0819e2d7f74

      SHA256

      14a0de8abcb017017bb0990e9cc068cb72d339614727b0479795645ca678b980

      SHA512

      f0faba057b9649847b0507fdd9e91004f6a9988e6a6b823d586280f86902eebb38ba2c5ddc65229055acd280ff4b54878f72bf8f5f7fdd367a2bffa0cbed2d71

    • memory/2120-17-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2120-18-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2120-19-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2120-13-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2120-15-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/2772-27-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2772-30-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2772-31-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2772-28-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/3936-3-0x0000000074EA2000-0x0000000074EA3000-memory.dmp

      Filesize

      4KB

    • memory/3936-2-0x0000000074EA0000-0x0000000075451000-memory.dmp

      Filesize

      5.7MB

    • memory/3936-0-0x0000000074EA2000-0x0000000074EA3000-memory.dmp

      Filesize

      4KB

    • memory/3936-4-0x0000000074EA0000-0x0000000075451000-memory.dmp

      Filesize

      5.7MB

    • memory/3936-36-0x0000000074EA0000-0x0000000075451000-memory.dmp

      Filesize

      5.7MB

    • memory/3936-1-0x0000000074EA0000-0x0000000075451000-memory.dmp

      Filesize

      5.7MB

    • memory/4600-10-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4600-8-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4600-32-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/4600-33-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB