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Analysis

  • max time kernel
    104s
  • max time network
    116s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2022, 01:25

General

  • Target

    024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe

  • Size

    548KB

  • MD5

    4d6bc1d7974c06161e1ed65c7f0a20a8

  • SHA1

    1a98ef9a70d39f916a81e0e8c9cf95c8c145744b

  • SHA256

    024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c

  • SHA512

    c2d1b78364de65346e64e0fd0bed87c4ab110de1e03705b68489503f5069053a647d478c7b0c5217cc8f9f40fe39deceb2c809a714a92ffc8c741d273799e5ee

  • SSDEEP

    6144:tkAH0NoFM7OnNbxu3xWADqEenYqOzUHnjir1TApaBtDVFlQYnGLUHFop5Ny05dS7:trFBtfDcapaBtDpHFY+0+FskukB1Hd

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 5 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 5 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • UPX packed file 15 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
    "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\ipconfig.exe
      "C:\Windows\System32\ipconfig.exe" /release
      2⤵
      • Gathers network information
      PID:1116
    • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
      "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2032
      • C:\Windows\SysWOW64\ipconfig.exe
        ipconfig /renew
        3⤵
        • Gathers network information
        PID:276
    • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
      "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1312
      • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
        "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:784
        • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
          "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data.dmp
          4⤵
            PID:1404
          • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
            "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data1.dmp
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:776
          • C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe
            "C:\Users\Admin\AppData\Local\Temp\024140fb411c120a4f7bdab9a46959b60da178910106bd0d73196a479243947c.exe" /scomma C:\Users\Admin\AppData\Local\Temp\data2.dmp
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1952

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/776-121-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/776-113-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/776-111-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/776-105-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/776-102-0x0000000000400000-0x0000000000426000-memory.dmp

      Filesize

      152KB

    • memory/784-116-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-95-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-94-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-92-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-90-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-88-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-89-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-87-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-83-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-84-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/784-86-0x0000000000400000-0x000000000045F000-memory.dmp

      Filesize

      380KB

    • memory/1312-123-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1312-76-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1312-74-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1312-73-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1312-127-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1312-78-0x0000000000400000-0x0000000000470000-memory.dmp

      Filesize

      448KB

    • memory/1404-125-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1404-97-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1404-99-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1404-107-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1404-124-0x0000000000400000-0x0000000000454000-memory.dmp

      Filesize

      336KB

    • memory/1952-109-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1952-122-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1952-120-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1952-114-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1952-119-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2032-65-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-61-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-58-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-62-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-59-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-70-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-66-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2032-126-0x0000000000400000-0x000000000040C000-memory.dmp

      Filesize

      48KB

    • memory/2036-56-0x0000000076871000-0x0000000076873000-memory.dmp

      Filesize

      8KB