Resubmissions

11-07-2022 14:55

220711-sar47sabcq 10

08-07-2022 11:16

220708-nc4tkacaar 10

Analysis

  • max time kernel
    138s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    11-07-2022 14:55

General

  • Target

    41afcc620b9a87add5322f3f17d563bb.exe

  • Size

    75KB

  • MD5

    41afcc620b9a87add5322f3f17d563bb

  • SHA1

    308238e449d97520e21cfb601feb15193bf89a68

  • SHA256

    7418fd3ec75f43bed921ecf2df4ba922fbd86c2e1e158bf309bbee13d4374125

  • SHA512

    1dde37ed40097e22543f95f29db4fe7b5f7c0c68f11e738491f36a2121a6fa54578d4dadb3988f84f42b903559326684b374704d46a2c4fc7d6e12f87a397754

Malware Config

Extracted

Family

netwire

C2

194.5.98.176:3363

194.5.98.176:3365

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

    power2022

  • registry_autorun

    false

  • use_mutex

    false

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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

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

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41afcc620b9a87add5322f3f17d563bb.exe
    "C:\Users\Admin\AppData\Local\Temp\41afcc620b9a87add5322f3f17d563bb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:668
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
        PID:3244

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/668-138-0x0000000008000000-0x000000000867A000-memory.dmp

      Filesize

      6.5MB

    • memory/668-134-0x00000000058F0000-0x0000000005912000-memory.dmp

      Filesize

      136KB

    • memory/668-137-0x00000000067A0000-0x00000000067BE000-memory.dmp

      Filesize

      120KB

    • memory/668-133-0x00000000059B0000-0x0000000005FD8000-memory.dmp

      Filesize

      6.2MB

    • memory/668-139-0x0000000006CA0000-0x0000000006CBA000-memory.dmp

      Filesize

      104KB

    • memory/668-135-0x0000000005FE0000-0x0000000006046000-memory.dmp

      Filesize

      408KB

    • memory/668-136-0x0000000006050000-0x00000000060B6000-memory.dmp

      Filesize

      408KB

    • memory/668-131-0x0000000000000000-mapping.dmp

    • memory/668-132-0x00000000031C0000-0x00000000031F6000-memory.dmp

      Filesize

      216KB

    • memory/2644-140-0x0000000025730000-0x00000000257C2000-memory.dmp

      Filesize

      584KB

    • memory/2644-130-0x00000000002B0000-0x00000000002C8000-memory.dmp

      Filesize

      96KB

    • memory/2644-141-0x0000000025D80000-0x0000000026324000-memory.dmp

      Filesize

      5.6MB

    • memory/3244-142-0x0000000000000000-mapping.dmp

    • memory/3244-143-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/3244-145-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/3244-146-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB

    • memory/3244-147-0x0000000000400000-0x0000000000433000-memory.dmp

      Filesize

      204KB