Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-09-2022 06:16

General

  • Target

    ESTADO PDF VER.exe

  • Size

    5.6MB

  • MD5

    ffa29931a560bb75dfe139efad4ca7d5

  • SHA1

    17bef9ea751eee1ce97e0dce90dd473ae5625ecb

  • SHA256

    4aa1ce5bc42ed8633df8586392afaec84df54ee37ce8878184f840ddc62879ba

  • SHA512

    eec1d4e55fa75d8ff49681de82b0bba0a40202df66d54e416929481c9d0e315826c99d8fbee3e72cb580bac45245716faf3d52cf61846055c19ce94f377e3583

  • SSDEEP

    24576:l+pONDPnta6Y9UfUMSR9iUFqNLcrLfQkF2uU5J9VF/08ixUoNQhGnD58fKj7m+Mp:RVdoLRHY7+UcniP/bAfKlG9r7sb

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

cmwuchisaa.con-ip.com:1880

Attributes
  • communication_password

    202cb962ac59075b964b07152d234b70

  • install_dir

    AppData

  • install_file

    Discord.exe

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 8 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ESTADO PDF VER.exe
    "C:\Users\Admin\AppData\Local\Temp\ESTADO PDF VER.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5040
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1264
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4780

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1264-140-0x0000000007C50000-0x00000000082CA000-memory.dmp
    Filesize

    6.5MB

  • memory/1264-141-0x0000000006900000-0x000000000691A000-memory.dmp
    Filesize

    104KB

  • memory/1264-134-0x0000000000000000-mapping.dmp
  • memory/1264-135-0x0000000002E70000-0x0000000002EA6000-memory.dmp
    Filesize

    216KB

  • memory/1264-136-0x0000000005580000-0x0000000005BA8000-memory.dmp
    Filesize

    6.2MB

  • memory/1264-137-0x0000000005C40000-0x0000000005CA6000-memory.dmp
    Filesize

    408KB

  • memory/1264-138-0x0000000005DA0000-0x0000000005E06000-memory.dmp
    Filesize

    408KB

  • memory/1264-139-0x00000000063F0000-0x000000000640E000-memory.dmp
    Filesize

    120KB

  • memory/4780-142-0x0000000000000000-mapping.dmp
  • memory/4780-147-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-154-0x0000000074AE0000-0x0000000074B19000-memory.dmp
    Filesize

    228KB

  • memory/4780-143-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-145-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-144-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-146-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-153-0x0000000074E20000-0x0000000074E59000-memory.dmp
    Filesize

    228KB

  • memory/4780-148-0x0000000074E20000-0x0000000074E59000-memory.dmp
    Filesize

    228KB

  • memory/4780-149-0x0000000074AE0000-0x0000000074B19000-memory.dmp
    Filesize

    228KB

  • memory/4780-150-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/4780-151-0x0000000074AE0000-0x0000000074B19000-memory.dmp
    Filesize

    228KB

  • memory/4780-152-0x0000000074AE0000-0x0000000074B19000-memory.dmp
    Filesize

    228KB

  • memory/5040-133-0x00000000054C0000-0x00000000054E2000-memory.dmp
    Filesize

    136KB

  • memory/5040-132-0x0000000000120000-0x00000000006BA000-memory.dmp
    Filesize

    5.6MB