Analysis

  • max time kernel
    91s
  • max time network
    131s
  • 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, 23:54

General

  • Target
    fatura.exe
  • Size 649KB
  • Sample221113-3xt77agh4x
  • SHA256 2b05c82d97fec0402f8a03acf466c13c09a69cebda207c35cedb40102bb8cad8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • snakekeylogger

C2
  • https://api.telegram.org/bot5402813712:AAG__8vfwqo_1K9XHIpxzTR9T7UW4raysO4/sendMessage?chat_id=5034680713

Signatures

  • Snake Keylogger

    Keylogger and Infostealer first seen in November 2020.

  • Snake Keylogger payload 1 IoCs
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Looks up external IP address via web service 1 IoCs

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

  • 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.

  • Program crash 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fatura.exe
    "C:\Users\Admin\AppData\Local\Temp\fatura.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\muUfIVIw.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:980
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\muUfIVIw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7DEA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2808
    • C:\Users\Admin\AppData\Local\Temp\fatura.exe
      "C:\Users\Admin\AppData\Local\Temp\fatura.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3020
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3020 -s 1492
        3⤵
        • Program crash
        PID:4800
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 204 -p 3020 -ip 3020
    1⤵
      PID:3460

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          fatura.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fatura.exe.log
          • Size 1KB
          • SHA256 bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7
          • MD5 SHA1 SHA512

          tmp7DEA.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\tmp7DEA.tmp
          • Size 1KB
          • SHA256 4a831c00e86c378ea96ff747a70c006d72713af8cf62bee5b90911bd44f8a55d
          • MD5 SHA1 SHA512

          memory/980-150-0x0000000070270000-0x00000000702BC000-memory.dmp

          memory/980-153-0x00000000078C0000-0x00000000078DA000-memory.dmp

          memory/980-158-0x0000000007BE0000-0x0000000007BE8000-memory.dmp

          memory/980-157-0x0000000007C00000-0x0000000007C1A000-memory.dmp

          memory/980-156-0x0000000007AF0000-0x0000000007AFE000-memory.dmp

          memory/980-140-0x0000000002C70000-0x0000000002CA6000-memory.dmp

          memory/980-147-0x0000000005F00000-0x0000000005F66000-memory.dmp

          memory/980-143-0x0000000005760000-0x0000000005D88000-memory.dmp

          memory/980-154-0x0000000007930000-0x000000000793A000-memory.dmp

          memory/980-148-0x00000000065B0000-0x00000000065CE000-memory.dmp

          memory/980-152-0x0000000007F00000-0x000000000857A000-memory.dmp

          memory/980-151-0x0000000007520000-0x000000000753E000-memory.dmp

          memory/980-155-0x0000000007B40000-0x0000000007BD6000-memory.dmp

          memory/980-146-0x00000000056F0000-0x0000000005712000-memory.dmp

          memory/980-149-0x0000000007560000-0x0000000007592000-memory.dmp

          memory/3020-144-0x0000000000400000-0x0000000000426000-memory.dmp

          memory/4720-132-0x00000000000B0000-0x0000000000158000-memory.dmp

          memory/4720-135-0x0000000004AF0000-0x0000000004AFA000-memory.dmp

          memory/4720-133-0x0000000005060000-0x0000000005604000-memory.dmp

          memory/4720-134-0x0000000004B50000-0x0000000004BE2000-memory.dmp

          memory/4720-137-0x0000000008960000-0x00000000089C6000-memory.dmp

          memory/4720-136-0x00000000088C0000-0x000000000895C000-memory.dmp