Analysis

  • max time kernel
    141s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2024, 06:55

General

  • Target

    7f2e6e3fea8ccd60e2d8fa5ac8249007.dll

  • Size

    273KB

  • MD5

    7f2e6e3fea8ccd60e2d8fa5ac8249007

  • SHA1

    1c23c84fc92e8d9319c73739492b955ed9fdd145

  • SHA256

    87be75726ef7fe92060437aace68dc50857d43be0a7ddf796ab1da186f46f9c5

  • SHA512

    4a97d80205337765e2b92c48ed6fd8bb2d1c0eb944969b29bc987bd2ff0dc7e2c71c72961e2b9a477d8858f905ef5cc08be4b9ca14f7a5bc1f20424c731b3253

  • SSDEEP

    6144:3BMwD29lCtiWtnw61k1w+rg8szt9izE9FJgZ/OWmhVexD88G1jmUY39:RMN5WtnwCKRsXizagdO90m/g

Malware Config

Signatures

  • UPX packed file 6 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Maps connected drives based on registry 3 TTPs 3 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 50 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\7f2e6e3fea8ccd60e2d8fa5ac8249007.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3948
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\7f2e6e3fea8ccd60e2d8fa5ac8249007.dll
      2⤵
      • Adds Run key to start application
      • Installs/modifies Browser Helper Object
      • Maps connected drives based on registry
      • Modifies registry class
      PID:4956
  • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
    "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
    1⤵
      PID:3584
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3032
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3032 CREDAT:17410 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1956

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      471B

      MD5

      23c885d47568a0c8ec78d6dcc163d3e6

      SHA1

      5784bd843fecdfcdfdd6c213c092c65613d1f6b4

      SHA256

      c682f97f831992d9fc18392f30e050457a49b6e15de26a1af4459541c2866d80

      SHA512

      329f656e73d533712901b9dd168555670fa8ca2d89aaffbc5e446f734af2eb409c54cbbcfc72b9173a65d413bafc4f74c47d6985ce15767890719c36f6e15fa1

    • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

      Filesize

      404B

      MD5

      7f26838b509c111ebb52c24892fd52ab

      SHA1

      b2a5067cefbaa0b440456e510c6cce640966eb73

      SHA256

      b5cfc0a735409a68a39fda09d50078625b2dc1b427aa42fcfcf544fd6548af76

      SHA512

      ce061fa5eaeb44af03e48a87823d263fa95fe806dd1057acc7335f989ae632a4ca39e8d52ea110f4609966e98fc628dce11eddd90f81f4b898b2a87617320906

    • C:\Users\Admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico

      Filesize

      4KB

      MD5

      da597791be3b6e732f0bc8b20e38ee62

      SHA1

      1125c45d285c360542027d7554a5c442288974de

      SHA256

      5b2c34b3c4e8dd898b664dba6c3786e2ff9869eff55d673aa48361f11325ed07

      SHA512

      d8dc8358727590a1ed74dc70356aedc0499552c2dc0cd4f7a01853dd85ceb3aead5fbdc7c75d7da36db6af2448ce5abdff64cebdca3533ecad953c061a9b338e

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8D1Z5HG5\suggestions[1].en-US

      Filesize

      17KB

      MD5

      5a34cb996293fde2cb7a4ac89587393a

      SHA1

      3c96c993500690d1a77873cd62bc639b3a10653f

      SHA256

      c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

      SHA512

      e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    • memory/4956-0-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB

    • memory/4956-18-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB

    • memory/4956-29-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB

    • memory/4956-30-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB

    • memory/4956-49-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB

    • memory/4956-50-0x0000000024820000-0x00000000248DB000-memory.dmp

      Filesize

      748KB