Analysis

  • max time kernel
    91s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-09-2022 15:34

General

  • Target

    Screenshot_06.scr

  • Size

    280KB

  • MD5

    1ed5bcc01a8089fd6e3085a78e4956a7

  • SHA1

    461fd6a2f8e29ebaf1f7e61f05ce1fe4ae4bca10

  • SHA256

    31ea489cce90c230fba6c502d97bd1fb804f881194e4ee516fc29c8b27b10cc1

  • SHA512

    e69959d5be1e1239f6903ff1a8a22379ee2fd9cba56231ae5dfc8f6cf39858601bf02152d903daeddfcc9335a2cb54ec38c030c9cb3017ef5f13f66a130c7621

  • SSDEEP

    6144:cvhvCENP+urb1AlE72pkTbZi/02De/Tj58jaBWtZ1mG:CcbQUk5RwMTjkaBaz

Malware Config

Extracted

Family

netwire

C2

iphanyi.edns.biz:3360

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    RDP_SEPT_2022

  • install_path

    %AppData%\Install\Host.exe

  • lock_executable

    false

  • offline_keylogger

    false

  • password

    caster123

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • 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 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Screenshot_06.scr
    "C:\Users\Admin\AppData\Local\Temp\Screenshot_06.scr" /S
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3648
    • C:\Users\Admin\AppData\Roaming\Install\Host.exe
      "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4908

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    280KB

    MD5

    1ed5bcc01a8089fd6e3085a78e4956a7

    SHA1

    461fd6a2f8e29ebaf1f7e61f05ce1fe4ae4bca10

    SHA256

    31ea489cce90c230fba6c502d97bd1fb804f881194e4ee516fc29c8b27b10cc1

    SHA512

    e69959d5be1e1239f6903ff1a8a22379ee2fd9cba56231ae5dfc8f6cf39858601bf02152d903daeddfcc9335a2cb54ec38c030c9cb3017ef5f13f66a130c7621

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

    280KB

    MD5

    1ed5bcc01a8089fd6e3085a78e4956a7

    SHA1

    461fd6a2f8e29ebaf1f7e61f05ce1fe4ae4bca10

    SHA256

    31ea489cce90c230fba6c502d97bd1fb804f881194e4ee516fc29c8b27b10cc1

    SHA512

    e69959d5be1e1239f6903ff1a8a22379ee2fd9cba56231ae5dfc8f6cf39858601bf02152d903daeddfcc9335a2cb54ec38c030c9cb3017ef5f13f66a130c7621

  • memory/3648-132-0x0000000074880000-0x0000000074E31000-memory.dmp
    Filesize

    5.7MB

  • memory/3648-133-0x000000007FA80000-0x000000007FAD0000-memory.dmp
    Filesize

    320KB

  • memory/3648-137-0x0000000074880000-0x0000000074E31000-memory.dmp
    Filesize

    5.7MB

  • memory/3648-138-0x000000007FA80000-0x000000007FAD0000-memory.dmp
    Filesize

    320KB

  • memory/4908-134-0x0000000000000000-mapping.dmp
  • memory/4908-139-0x0000000074880000-0x0000000074E31000-memory.dmp
    Filesize

    5.7MB

  • memory/4908-140-0x000000007F2D0000-0x000000007F320000-memory.dmp
    Filesize

    320KB

  • memory/4908-141-0x0000000074880000-0x0000000074E31000-memory.dmp
    Filesize

    5.7MB

  • memory/4908-142-0x000000007F2D0000-0x000000007F320000-memory.dmp
    Filesize

    320KB