Analysis

  • max time kernel
    197s
  • max time network
    211s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-11-2022 22:50

General

  • Target

    e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe

  • Size

    408KB

  • MD5

    7144f017904a36ab19ebf81fe9bf035a

  • SHA1

    752b66f7ef137e876e88bb369f369f77a19976d5

  • SHA256

    e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7

  • SHA512

    30e561e621afdb9fa9c73b590dd67e257966cba6b62b899102371fcae1db5a7cbfbed0cc8adee1657c937e3e0587406ab1fa976e603466211203b5fc9de3dfff

  • SSDEEP

    12288:yFzPPn2KVdfuXzqSNYOtDw/EaYv59F1o+:Szf2MSfNvtXPv5a+

Malware Config

Extracted

Family

fickerstealer

C2

kefkfkf.link:8080

Signatures

  • Fickerstealer

    Ficker is an infostealer written in Rust and ASM.

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

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

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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe
    "C:\Users\Admin\AppData\Local\Temp\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3320
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4944
      • C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe
        "C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe"
        3⤵
        • Executes dropped EXE
        PID:4432

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe

    Filesize

    368KB

    MD5

    3e0b49f098aa150c0a64cf2bf9384d7a

    SHA1

    baf09ea22413ae580e3cf3bf5c4c4d4ac4de3065

    SHA256

    4ee8d9168a3e270c3f202d91891e864f4864b8aca25b0ba17e694a9d7fb711e5

    SHA512

    697dbe1e3f5a5db28958b6e0e3c40f99481903e46649625f1e5189713bafc84a0333669bcb800ae861b8c489701f9bb75a1bc9b181e727d5de6f5c0d4856e4dd

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe

    Filesize

    368KB

    MD5

    3e0b49f098aa150c0a64cf2bf9384d7a

    SHA1

    baf09ea22413ae580e3cf3bf5c4c4d4ac4de3065

    SHA256

    4ee8d9168a3e270c3f202d91891e864f4864b8aca25b0ba17e694a9d7fb711e5

    SHA512

    697dbe1e3f5a5db28958b6e0e3c40f99481903e46649625f1e5189713bafc84a0333669bcb800ae861b8c489701f9bb75a1bc9b181e727d5de6f5c0d4856e4dd

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7.exe

    Filesize

    368KB

    MD5

    3e0b49f098aa150c0a64cf2bf9384d7a

    SHA1

    baf09ea22413ae580e3cf3bf5c4c4d4ac4de3065

    SHA256

    4ee8d9168a3e270c3f202d91891e864f4864b8aca25b0ba17e694a9d7fb711e5

    SHA512

    697dbe1e3f5a5db28958b6e0e3c40f99481903e46649625f1e5189713bafc84a0333669bcb800ae861b8c489701f9bb75a1bc9b181e727d5de6f5c0d4856e4dd

  • memory/4432-135-0x0000000000000000-mapping.dmp

  • memory/4432-136-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/4432-139-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/4432-142-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/4944-132-0x0000000000000000-mapping.dmp

  • memory/4944-141-0x0000000000960000-0x00000000009C2000-memory.dmp

    Filesize

    392KB

  • memory/4944-140-0x0000000000773000-0x00000000007A9000-memory.dmp

    Filesize

    216KB