Analysis

  • max time kernel
    54s
  • max time network
    36s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    30-10-2024 18:23

General

  • Target

    7z2401-x64.exe

  • Size

    1.5MB

  • MD5

    de644b4e1086f1315c422f359133543b

  • SHA1

    54be86d121879b0e5d86604297c57a926d665fa8

  • SHA256

    17a507cce4066c4be7db53d64d9a9e11dfecfd4f2411393690506e591b5895cd

  • SHA512

    714d41254352d91834a4b648d613e9b4452b93b097b5781ec5bf3ec7c310a489d3a1c409b2f0a6946822b96f6943b579910d26a5f4324b320d485e856dbdcb1a

  • SSDEEP

    49152:8yEuRNRgYQYk6tC0tkaNuiXatTQY7quUncuTVyvn65:8yEoL7tCzlqLcuBz5

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Modifies registry class 24 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7z2401-x64.exe
    "C:\Users\Admin\AppData\Local\Temp\7z2401-x64.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    PID:1940
  • C:\Windows\system32\BackgroundTransferHost.exe
    "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
    1⤵
    • Modifies registry class
    PID:2764
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4944
    • C:\Program Files\7-Zip\7z.exe
      "C:\Program Files\7-Zip\7z.exe"
      1⤵
      • Executes dropped EXE
      PID:4232
    • C:\Program Files\7-Zip\7zFM.exe
      "C:\Program Files\7-Zip\7zFM.exe"
      1⤵
      • Executes dropped EXE
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1688
    • C:\Program Files\7-Zip\7z.exe
      "C:\Program Files\7-Zip\7z.exe"
      1⤵
      • Executes dropped EXE
      PID:820
    • C:\Program Files\7-Zip\7z.exe
      "C:\Program Files\7-Zip\7z.exe"
      1⤵
      • Executes dropped EXE
      PID:4828

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\7-Zip\7-zip.dll

      Filesize

      99KB

      MD5

      0bb139023eb3e17dedf9780a66e99a1a

      SHA1

      da841883ee156ffb2c1718e6aa20d30d4d578691

      SHA256

      0cdacb5eb70ca2b16ab333ee870983750103865fedb167c9d6068019b8197a4f

      SHA512

      ff9c15ac88bb233d9dd1dfb66a0dd9df5d87e7ae0ca282a6223fcd2ee69896056f330d9af6a4a7f913f9ed97b5bf77e8adfaa43270a7e39eaa91d039cb8f445d

    • C:\Program Files\7-Zip\7z.exe

      Filesize

      543KB

      MD5

      2f58d2175bd282f29cb215275a18100f

      SHA1

      f7daad8646e9b633b9e57df43ec819d6e72c907c

      SHA256

      cf20cf85335562d6d62ba191614393f8da80664d3d6126c9fbaec9c7caadaaa2

      SHA512

      44ae15cada6b0823e0717a27dcfe2e4bd245184c0dd96961de7ff2eaabc3947fffb6fe86c9fb0f77e39fb81f0bf2a54f86206d9f7a267a05cee38525c65d54e4

    • C:\Program Files\7-Zip\7zFM.exe

      Filesize

      929KB

      MD5

      6156ebaea891ddbfcb1187f628ec7577

      SHA1

      778fd5d5dec21f95c5aa554567e06da8295b9a47

      SHA256

      4853947e14bf30ab40702c34f80fb113c45619a73f89a938f2284c786e35c9fe

      SHA512

      ed166095ceb46ff77e1081263aea03cb97b5d244a7e4060b6b37c847fd496a7e577f297846414ff130e01484f44f9da2566e2572c6cd69e9b419c311799a511a