Analysis

  • max time kernel
    122s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    26-02-2024 22:05

General

  • Target

    a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3.exe

  • Size

    482KB

  • MD5

    535ddefbc9a7f3bb8decc1705b76d42f

  • SHA1

    73b4d446faa4862fef3623c4f404b26941e9ac6c

  • SHA256

    a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3

  • SHA512

    f0ff010ad37bf3b21a7d038abfe4d2ade41420737f669fbaae0ba9d81e6150a8053383301bca62d5028298eb4167168e0fc5f1d425b8fbeb8a077cd0c65baeea

  • SSDEEP

    6144:uPpJYbryZGXSR/NxwLv1PWNemY2BzOpGZzN28qRdVlZ3VmE:uPpibryAXSR/Nav1WNemYWRaV

Malware Config

Extracted

Family

netwire

C2

194.147.140.14:4550

Attributes
  • activex_autorun

    false

  • copy_executable

    false

  • delete_original

    false

  • host_id

    THANA

  • install_path

    %AppData%\Install\Host.exe

  • keylogger_dir

    TestLink.lnk

  • lock_executable

    false

  • offline_keylogger

    false

  • password

    DrvbK8mdyY4F6Uh

  • registry_autorun

    false

  • use_mutex

    false

Signatures

  • Detect PureCrypter injector 1 IoCs
  • Netwire

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

  • PureCrypter

    PureCrypter is a .NET malware loader first seen in early 2021.

  • Detects executables packed with SmartAssembly 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3.exe
    "C:\Users\Admin\AppData\Local\Temp\a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Users\Admin\AppData\Local\Temp\a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3.exe
      C:\Users\Admin\AppData\Local\Temp\a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1048
      • C:\Users\Admin\AppData\Roaming\Install\Host.exe
        "C:\Users\Admin\AppData\Roaming\Install\Host.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    482KB

    MD5

    535ddefbc9a7f3bb8decc1705b76d42f

    SHA1

    73b4d446faa4862fef3623c4f404b26941e9ac6c

    SHA256

    a6d6cfb6bb98d96dc1fdc43def2fbb847d416bce908c4d68790d50fac9a986e3

    SHA512

    f0ff010ad37bf3b21a7d038abfe4d2ade41420737f669fbaae0ba9d81e6150a8053383301bca62d5028298eb4167168e0fc5f1d425b8fbeb8a077cd0c65baeea

  • memory/1048-16-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-14-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1048-9-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-19-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-11-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-10-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1048-8-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/2372-3-0x0000000074C20000-0x000000007530E000-memory.dmp

    Filesize

    6.9MB

  • memory/2372-5-0x0000000000470000-0x00000000004BE000-memory.dmp

    Filesize

    312KB

  • memory/2372-4-0x00000000007D0000-0x0000000000810000-memory.dmp

    Filesize

    256KB

  • memory/2372-2-0x00000000007D0000-0x0000000000810000-memory.dmp

    Filesize

    256KB

  • memory/2372-6-0x0000000000500000-0x0000000000536000-memory.dmp

    Filesize

    216KB

  • memory/2372-17-0x0000000074C20000-0x000000007530E000-memory.dmp

    Filesize

    6.9MB

  • memory/2372-0-0x0000000000910000-0x000000000098E000-memory.dmp

    Filesize

    504KB

  • memory/2372-7-0x0000000000540000-0x000000000058C000-memory.dmp

    Filesize

    304KB

  • memory/2372-1-0x0000000074C20000-0x000000007530E000-memory.dmp

    Filesize

    6.9MB

  • memory/2736-26-0x00000000008D0000-0x000000000094E000-memory.dmp

    Filesize

    504KB

  • memory/2736-27-0x00000000748A0000-0x0000000074F8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2736-28-0x0000000004CE0000-0x0000000004D20000-memory.dmp

    Filesize

    256KB

  • memory/2736-29-0x00000000748A0000-0x0000000074F8E000-memory.dmp

    Filesize

    6.9MB

  • memory/2736-30-0x0000000004CE0000-0x0000000004D20000-memory.dmp

    Filesize

    256KB