Analysis

  • max time kernel
    141s
  • max time network
    149s
  • 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 16:01

General

  • Target

    93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe

  • Size

    69KB

  • MD5

    93c72d6d182e00b4730f18d1a053b294

  • SHA1

    e727d9288624e3c13ce24061941aa22353f4b5ec

  • SHA256

    a1d8130956aa19401c49e2485717fd34e467821f3ae8c01250dd8ce81cbbf0c3

  • SHA512

    310b493088af720a61111ab65a9d3a29819e83aacb6152f7e4423f31b4886ac3e19258f5df4ade0f6cb7c607c44f9cd3ff00aa1f2d64095db33e8d04764e190a

  • SSDEEP

    1536:7TaRCB+ilTAzxT3WkMSupOcFDK2FQZhuhM6xST7HsCJwEAl/JFpcuS:7mils9WkMSwOQDvCCbjJ/JH5

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:792
    • C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_JaffaCakes118.exe"
      1⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~e57b8b1.tmp ,C:\Users\Admin\AppData\Local\Temp\93c72d6d182e00b4730f18d1a053b294_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:1992
        • 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:2424
        • 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:4196

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\~~e57b8b1.tmp

      Filesize

      1.0MB

      MD5

      7b2ebb9d24d1600af75c60532516531c

      SHA1

      dd9ee106110c1c5cbbf6a59fdd1e78e8612afa68

      SHA256

      f49a6104ea865bb381afe2287fa727cccfd0f62c048b82cccced0d6af539722a

      SHA512

      39f97f66a929ca0751152619ab13dc2a0952746fa75a6271c1f14c04354366247dbbf5029bc901fa3652b920ba960876d7906b82e1a1c56649d03c6fcb205e67

    • memory/1612-0-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB

    • memory/1612-3-0x0000000000400000-0x0000000000422000-memory.dmp

      Filesize

      136KB