Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04-03-2024 05:04

General

  • Target

    b1493c9c3de438c1d925f3a4af556f04.exe

  • Size

    2.2MB

  • MD5

    b1493c9c3de438c1d925f3a4af556f04

  • SHA1

    16ba06f5872a5d79ad1dd835669a9d5f55cf10d2

  • SHA256

    418f4beab3913272a5ce86075202e67fe89a273c7840b53d0eccb0229dfea020

  • SHA512

    9556f48f59abd27cdd919fcb892de800d5291b012ebef9c4042804662f58f671fff8f700f3c22e9c6566f7994fcbd7cbadd35625faa1e17e5f72285b4359fad9

  • SSDEEP

    24576:0KtlfLm3/4s8krM4hsJgqGMDA2Q0CDwuJZqrMNCYjef9juun4MoTq0:Hj44VTgfH2r6qfpo2

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

111.90.158.139:1234

Attributes
  • communication_password

    9d7e1007ecf7445a02f5ed83b32ff32c

  • install_dir

    svchost

  • install_file

    svchost.exe

  • tor_process

    tor

Signatures

  • BitRAT

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 21 IoCs

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

  • Adds Run key to start application 2 TTPs 4 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).

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1493c9c3de438c1d925f3a4af556f04.exe
    "C:\Users\Admin\AppData\Local\Temp\b1493c9c3de438c1d925f3a4af556f04.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2912
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2528
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
        3⤵
        • Adds Run key to start application
        PID:2692
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
        "C:\Users\Admin\AppData\Local\Temp\\AddInProcess32.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2724
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
          4⤵
          • Adds Run key to start application
          PID:2300
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /c REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:824
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe"
          4⤵
          • Adds Run key to start application
          PID:1744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

    Filesize

    41KB

    MD5

    6a673bfc3b67ae9782cb31af2f234c68

    SHA1

    7544e89566d91e84e3cd437b9a073e5f6b56566e

    SHA256

    978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

    SHA512

    72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe

    Filesize

    2.2MB

    MD5

    b1493c9c3de438c1d925f3a4af556f04

    SHA1

    16ba06f5872a5d79ad1dd835669a9d5f55cf10d2

    SHA256

    418f4beab3913272a5ce86075202e67fe89a273c7840b53d0eccb0229dfea020

    SHA512

    9556f48f59abd27cdd919fcb892de800d5291b012ebef9c4042804662f58f671fff8f700f3c22e9c6566f7994fcbd7cbadd35625faa1e17e5f72285b4359fad9

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.exe

    Filesize

    103KB

    MD5

    8e7a1806e207754c612660a708326fce

    SHA1

    c94e384b45ef9a7cc571f114fff783aeea84a907

    SHA256

    e0d694d467e9e20d3e63ff52632e3fbbfcc27ce71a72f303bd88ef51bef0d09f

    SHA512

    27bea6464fb82a3ed0d7a5a8909736396c1550a69b0321453a085b8979ac1ab95a9e5d8f30fb0480ccd79089eaedccbb8788f48502cc6eb9dbba27c19e25fede

  • memory/2000-15-0x00000000002F0000-0x0000000000534000-memory.dmp

    Filesize

    2.3MB

  • memory/2000-21-0x0000000000940000-0x0000000000952000-memory.dmp

    Filesize

    72KB

  • memory/2000-20-0x00000000043E0000-0x0000000004420000-memory.dmp

    Filesize

    256KB

  • memory/2000-19-0x0000000074CF0000-0x00000000753DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2000-17-0x00000000043E0000-0x0000000004420000-memory.dmp

    Filesize

    256KB

  • memory/2000-16-0x0000000074CF0000-0x00000000753DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2724-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2724-34-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-51-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-50-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-49-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-48-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-47-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-46-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-24-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-26-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-27-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-45-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-30-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-32-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-33-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-44-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-35-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-36-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-37-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-39-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-41-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-42-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2724-43-0x0000000000400000-0x00000000007E4000-memory.dmp

    Filesize

    3.9MB

  • memory/2912-7-0x0000000004FE0000-0x0000000005020000-memory.dmp

    Filesize

    256KB

  • memory/2912-0-0x0000000000260000-0x00000000004A4000-memory.dmp

    Filesize

    2.3MB

  • memory/2912-1-0x0000000074CF0000-0x00000000753DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2912-2-0x0000000004FE0000-0x0000000005020000-memory.dmp

    Filesize

    256KB

  • memory/2912-3-0x00000000007F0000-0x000000000081C000-memory.dmp

    Filesize

    176KB

  • memory/2912-4-0x0000000074CF0000-0x00000000753DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2912-18-0x0000000074CF0000-0x00000000753DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2912-5-0x0000000004FE0000-0x0000000005020000-memory.dmp

    Filesize

    256KB