Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-12-2021 20:13

General

  • Target

    43e0eed9a47f0eb655af50a9aacd02b1.exe

  • Size

    2.0MB

  • MD5

    43e0eed9a47f0eb655af50a9aacd02b1

  • SHA1

    6dbc00b84c23fc44857bd81cc69fe62430bf9c82

  • SHA256

    b67e1dc98007c0bf5afa9ca1f840de158cb01eedbce373d791b80059de98b011

  • SHA512

    12c160f00b6a50ed84d4e3d90971cad17d67048e291210bef2e8bff8bb8acbfc18f0de26284e1f5289f9612c3efcd1659068f886404cd0e21487a9a109207f75

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

107.172.44.141:2030

Attributes
  • communication_password

    5f4dcc3b5aa765d61d8327deb882cf99

  • tor_process

    tor

Signatures

  • BitRAT

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

  • suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

    suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)

  • UPX packed file 5 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 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.

  • 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\43e0eed9a47f0eb655af50a9aacd02b1.exe
    "C:\Users\Admin\AppData\Local\Temp\43e0eed9a47f0eb655af50a9aacd02b1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\aDqFLFeDN.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aDqFLFeDN" /XML "C:\Users\Admin\AppData\Local\Temp\tmp77DE.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:568
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1552

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp77DE.tmp

    MD5

    1520dea1f9f8afec361aff1cb3bd61f2

    SHA1

    4cd7a9e1357fd35cb7ff327c76724df6836aa23f

    SHA256

    cd1fa5ffd7db3ea4e793431bc84b29b6e6fd112a1ea8b101a731a5556bc5f33b

    SHA512

    6bd5cedc93132dff3bb22c188b02948ce537d401e433b5c053507ec74f4954076707b8326de6b02c84911a46e7b84073c66646eb6896b89864fb580c4cbfd087

  • memory/544-56-0x0000000076141000-0x0000000076143000-memory.dmp

    Filesize

    8KB

  • memory/544-57-0x0000000004F20000-0x0000000004F21000-memory.dmp

    Filesize

    4KB

  • memory/544-58-0x00000000003F0000-0x00000000003F8000-memory.dmp

    Filesize

    32KB

  • memory/544-59-0x0000000007ED0000-0x00000000080DE000-memory.dmp

    Filesize

    2.1MB

  • memory/544-54-0x0000000000B00000-0x0000000000B01000-memory.dmp

    Filesize

    4KB

  • memory/568-61-0x0000000000000000-mapping.dmp

  • memory/632-72-0x0000000002520000-0x000000000316A000-memory.dmp

    Filesize

    12.3MB

  • memory/632-60-0x0000000000000000-mapping.dmp

  • memory/632-73-0x0000000002520000-0x000000000316A000-memory.dmp

    Filesize

    12.3MB

  • memory/1552-64-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/1552-68-0x00000000007E2730-mapping.dmp

  • memory/1552-67-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/1552-69-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/1552-66-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/1552-71-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/1552-65-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB