Analysis

  • max time kernel
    129s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    19-07-2022 11:58

General

  • Target

    Receipt.exe

  • Size

    1.1MB

  • MD5

    92220ac479344c60ae11a3d8c74a2b36

  • SHA1

    c8170dcc4766b603e6cad4d854f9ec3b7c4dcce2

  • SHA256

    e1a77fa5285413469295dae451a81e68613360acbd05c127701e6e289279acfd

  • SHA512

    cc1b11100fcb419a94b33215cad1949778e9e694977c09d77e384269ef9a012aba7d107cd00acd84c0a5114773b1a3c8e11e262e779e78624fcda318eb29c43f

Malware Config

Extracted

Family

netwire

C2

185.140.53.61:3363

185.140.53.61:3365

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    HostId-%Rand%

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • offline_keylogger

    true

  • password

    move4ward

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • NetWire RAT payload 9 IoCs
  • Netwire

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Receipt.exe
    "C:\Users\Admin\AppData\Local\Temp\Receipt.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:756
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cPbvjkpUOOc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC939.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1820
    • C:\Users\Admin\AppData\Local\Temp\Receipt.exe
      "{path}"
      2⤵
        PID:1816

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpC939.tmp

      Filesize

      1KB

      MD5

      d20a616715520df4a12d3ddb7cb289cf

      SHA1

      3a670f431c4df3a6a2bfb1936d6cf483abf99405

      SHA256

      1cc5ed0a751797a4a1108c60f012a5a64eda8fcc8bea5773a3abe442f19a6205

      SHA512

      f893b6703910cb51384a6dccb205008dab8fc8985d66720d243be2fef79e75f1371e3b79576f09505fd3223faf8a798ae6f01fe46f61de83a107a963e18e2b7a

    • memory/756-55-0x0000000076291000-0x0000000076293000-memory.dmp

      Filesize

      8KB

    • memory/756-56-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/756-57-0x00000000052D0000-0x000000000538C000-memory.dmp

      Filesize

      752KB

    • memory/756-58-0x00000000004D0000-0x000000000053E000-memory.dmp

      Filesize

      440KB

    • memory/756-54-0x0000000000C40000-0x0000000000D68000-memory.dmp

      Filesize

      1.2MB

    • memory/1816-62-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-61-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-64-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-66-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-67-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-70-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-68-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-71-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-72-0x000000000040242D-mapping.dmp

    • memory/1816-75-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-76-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1816-77-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/1820-59-0x0000000000000000-mapping.dmp