Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-08-2024 21:09

General

  • Target

    94be68a29c3014ee15064f7824ac8136_JaffaCakes118.exe

  • Size

    68KB

  • MD5

    94be68a29c3014ee15064f7824ac8136

  • SHA1

    f719996139aa66e311b26d417ea82f5b52db8304

  • SHA256

    407ba88105aba9abdef63505654070fe5aca39d066bc6273f2aeb853e47db523

  • SHA512

    002138be8b4594997d19033de749110590a7194e32b6c9bd301177d4b8def55db01efb24af508fdb8778fa58d18ba1e40d396841c321ca2abd6cd9c8d907e1ee

  • SSDEEP

    1536:5Hy7EO3aKNrN01NFJDXjjX1XQTAW9VgWGMCDFpnixaeY:9y7/Dp01hXjjX1rWGMIpnN

Malware Config

Signatures

  • Possible privilege escalation attempt 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies file permissions 1 TTPs 2 IoCs
  • UPX packed file 2 IoCs

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

  • File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch -p
    1⤵
      PID:788
    • C:\Users\Admin\AppData\Local\Temp\94be68a29c3014ee15064f7824ac8136_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\94be68a29c3014ee15064f7824ac8136_JaffaCakes118.exe"
      1⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:756
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~e578c81.tmp ,C:\Users\Admin\AppData\Local\Temp\94be68a29c3014ee15064f7824ac8136_JaffaCakes118.exe
        2⤵
        • Deletes itself
        • Loads dropped DLL
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1648
        • C:\Windows\SysWOW64\takeown.exe
          takeown /f "C:\Windows\system32\rpcss.dll"
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:3128
        • C:\Windows\SysWOW64\icacls.exe
          icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F
          3⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • System Location Discovery: System Language Discovery
          PID:384

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\~~e578c81.tmp

      Filesize

      1.0MB

      MD5

      09b474a2a070f23d33686f13f52e7cf2

      SHA1

      71e1faccf6be787c2248f866cc93aa001201cfe0

      SHA256

      0584c935b74e15689cbc50a9bd2416137d20a61fdde36603df1210fb82f5c4a5

      SHA512

      0444bb327390956a239010175c45a46b994785edc3326e4455791d6ec6becfeab2a653b55bf5f30f6634946324fce0b529f0039fae26f4faacafdc02bd59c4f2

    • memory/756-0-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB

    • memory/756-3-0x0000000000400000-0x0000000000421000-memory.dmp

      Filesize

      132KB