Analysis

  • max time kernel
    141s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    01-06-2024 03:45

General

  • Target

    d6077160070968e0b35f9bd91cf42f3c76df11003923b9446d8b87d2131eb84e.exe

  • Size

    72KB

  • MD5

    736e2ec3d18bc6f091002833f34e81c9

  • SHA1

    642a70fd2b90515c729874154b90d0c21eab9488

  • SHA256

    d6077160070968e0b35f9bd91cf42f3c76df11003923b9446d8b87d2131eb84e

  • SHA512

    527ec6431b8dabbdaa2f3f87340722f897d28db230bbb7ba74493cdbb91e26dbdcf33d2e29116676d5ddca41365c99cc3381ad172950d1601889f1f70c8ed29e

  • SSDEEP

    768:TrItKyw5WHXfQmjIiIk9ecAa0Mb96SyX1DLdRXXXk:Tr3Z5IfQmv81ar1yXtZC

Score
9/10

Malware Config

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d6077160070968e0b35f9bd91cf42f3c76df11003923b9446d8b87d2131eb84e.exe
    "C:\Users\Admin\AppData\Local\Temp\d6077160070968e0b35f9bd91cf42f3c76df11003923b9446d8b87d2131eb84e.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Windows\SysWOW64\attrib.exe
      attrib +a +s +h +r C:\Windows\Debug\zskhost.exe
      2⤵
      • Sets file to hidden
      • Drops file in Windows directory
      • Views/modifies file attributes
      PID:2408
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\D60771~1.EXE > nul
      2⤵
      • Deletes itself
      PID:2372
  • C:\Windows\Debug\zskhost.exe
    C:\Windows\Debug\zskhost.exe
    1⤵
    • Executes dropped EXE
    PID:1864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\Debug\zskhost.exe

    Filesize

    72KB

    MD5

    66d625fd9cc1b04f67b23a687c810c9a

    SHA1

    1ead9491d97c314873f73309bbdd4d3f51b2efdd

    SHA256

    67a92b8b72836db1cd67cb80a339723742b867e4de3933ec9d875284f185b7df

    SHA512

    9fb77b2ff6981f543321d158e2a826b6ba13307e1335c19f9a5512b713398e2bf8fc3756560b28b343ea0d2c6128d70606a7bdf8d1e51e7556dc6e8f2fbe3b2a