Analysis

  • max time kernel
    140s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-07-2022 03:14

General

  • Target

    70441312a820a461c723a69b991befae918d74843c348aabd7a25899e0c31568.exe

  • Size

    156KB

  • MD5

    3086fd608ff06991a94b3f7ed891f4ef

  • SHA1

    69112497cd3a29c87a5d5a657aa51f63ef34ce2c

  • SHA256

    70441312a820a461c723a69b991befae918d74843c348aabd7a25899e0c31568

  • SHA512

    b810802141018bf4c970e6b747097f103ba6b7a7f4eaaa305d7d6c5f56e556fa18e8e3edbccfeb140f5250971dd7942b31a18c6ce06d7ead906d4fa2a4179521

Malware Config

Extracted

Family

netwire

C2

79.172.242.85:1406

Attributes
  • activex_autorun

    false

  • copy_executable

    true

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • install_path

    %AppData%\Install\Host.exe

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

    gqllpDVm

  • offline_keylogger

    true

  • password

    Password

  • registry_autorun

    false

  • use_mutex

    true

Signatures

  • NetWire RAT payload 4 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70441312a820a461c723a69b991befae918d74843c348aabd7a25899e0c31568.exe
    "C:\Users\Admin\AppData\Local\Temp\70441312a820a461c723a69b991befae918d74843c348aabd7a25899e0c31568.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:332
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\agdfdffhit.bat
      2⤵
      • Drops startup file
      PID:5056
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Users\Admin\AppData\Roaming\Install\Host.exe
        "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
        3⤵
        • Executes dropped EXE
        PID:3360
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      2⤵
        PID:4528

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\agdfdffhit.bat

      Filesize

      201B

      MD5

      3f4ffefff831f9b885a54b3638659236

      SHA1

      ec860ca0707fd091e75c7ada9f25593ffd33041d

      SHA256

      9a2feef00e6fbcd4cc7da0ebc2e5c635aafbff45c9d2e799b09e17276144cda8

      SHA512

      b20312cab57b9dd79b4b8a39cbdd2b74aadbdd7c42a7d4cbb8ceda943ffc4993515594a13be0797a0ceb7f51d6cda92c7324279c8bbee9fbe07f05196929726f

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

      Filesize

      132KB

      MD5

      f64f409c49101aed109813b4c155c333

      SHA1

      2794f7fac2c99b4ff14b36753eebc276ef89fa50

      SHA256

      fced6eb5ab80abf00c0bc80101ec5ba3b81941fe8022be0952ed6be0079db1c9

      SHA512

      dfd9047d26f34da89ddfef19adb2ef52bd8a58d6199df178fe401298f5d19807bc8e69bf943dfdc8fde20198d06c654507de91362a47a3e45c26855468018572

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

      Filesize

      132KB

      MD5

      f64f409c49101aed109813b4c155c333

      SHA1

      2794f7fac2c99b4ff14b36753eebc276ef89fa50

      SHA256

      fced6eb5ab80abf00c0bc80101ec5ba3b81941fe8022be0952ed6be0079db1c9

      SHA512

      dfd9047d26f34da89ddfef19adb2ef52bd8a58d6199df178fe401298f5d19807bc8e69bf943dfdc8fde20198d06c654507de91362a47a3e45c26855468018572

    • C:\Users\Admin\AppData\Roaming\Install\Host.exe

      Filesize

      132KB

      MD5

      f64f409c49101aed109813b4c155c333

      SHA1

      2794f7fac2c99b4ff14b36753eebc276ef89fa50

      SHA256

      fced6eb5ab80abf00c0bc80101ec5ba3b81941fe8022be0952ed6be0079db1c9

      SHA512

      dfd9047d26f34da89ddfef19adb2ef52bd8a58d6199df178fe401298f5d19807bc8e69bf943dfdc8fde20198d06c654507de91362a47a3e45c26855468018572

    • C:\Users\Admin\AppData\Roaming\Install\Host.exe

      Filesize

      132KB

      MD5

      f64f409c49101aed109813b4c155c333

      SHA1

      2794f7fac2c99b4ff14b36753eebc276ef89fa50

      SHA256

      fced6eb5ab80abf00c0bc80101ec5ba3b81941fe8022be0952ed6be0079db1c9

      SHA512

      dfd9047d26f34da89ddfef19adb2ef52bd8a58d6199df178fe401298f5d19807bc8e69bf943dfdc8fde20198d06c654507de91362a47a3e45c26855468018572

    • memory/332-130-0x0000000074CD0000-0x0000000075281000-memory.dmp

      Filesize

      5.7MB

    • memory/332-140-0x0000000074CD0000-0x0000000075281000-memory.dmp

      Filesize

      5.7MB

    • memory/3360-137-0x0000000000000000-mapping.dmp

    • memory/4420-133-0x0000000000000000-mapping.dmp

    • memory/4528-136-0x0000000000000000-mapping.dmp

    • memory/5056-131-0x0000000000000000-mapping.dmp