Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2023 15:33

General

  • Target

    471a0a9546307c950bde3c7c4aa66cfd.exe

  • Size

    251KB

  • MD5

    471a0a9546307c950bde3c7c4aa66cfd

  • SHA1

    89f0a92b57c354336856b542f74759c72e0d3f64

  • SHA256

    1d7456676f0ab486a249f583847442337cca3bfc46c4148b14fe52bb25663c85

  • SHA512

    b63b3898ccae650be6a434fd8aaa60d72a410c450200aa88f0ae1dd8a4552d16524621e69b58eb2d142ac3cc24454fa5cd8615fb48095c659fb713a7fa191ff7

  • SSDEEP

    3072:5OhqIawV294/k+6IoUKPEqig1om4BW9Vca1CG9UC5Re0PAo:IUby29gkIn1g74U9VFUse

Malware Config

Signatures

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\471a0a9546307c950bde3c7c4aa66cfd.exe
    "C:\Users\Admin\AppData\Local\Temp\471a0a9546307c950bde3c7c4aa66cfd.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\ProgramData\KKJKEBKFCA.exe"
      2⤵
        PID:2000
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\471a0a9546307c950bde3c7c4aa66cfd.exe" & del "C:\ProgramData\*.dll"" & exit
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:2444
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          3⤵
          • Delays execution with timeout.exe
          PID:636

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Cab49BF.tmp

      Filesize

      61KB

      MD5

      f3441b8572aae8801c04f3060b550443

      SHA1

      4ef0a35436125d6821831ef36c28ffaf196cda15

      SHA256

      6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

      SHA512

      5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

    • C:\Users\Admin\AppData\Local\Temp\Tar4A00.tmp

      Filesize

      163KB

      MD5

      9441737383d21192400eca82fda910ec

      SHA1

      725e0d606a4fc9ba44aa8ffde65bed15e65367e4

      SHA256

      bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

      SHA512

      7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

    • memory/1696-1-0x0000000000710000-0x0000000000810000-memory.dmp

      Filesize

      1024KB

    • memory/1696-2-0x0000000000220000-0x0000000000248000-memory.dmp

      Filesize

      160KB

    • memory/1696-3-0x0000000000400000-0x000000000063A000-memory.dmp

      Filesize

      2.2MB

    • memory/1696-143-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/1696-197-0x0000000000400000-0x000000000063A000-memory.dmp

      Filesize

      2.2MB

    • memory/1696-198-0x0000000000710000-0x0000000000810000-memory.dmp

      Filesize

      1024KB

    • memory/2000-215-0x00000000021B0000-0x00000000021B1000-memory.dmp

      Filesize

      4KB