Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    07-09-2022 15:39

General

  • Target

    Autorización Tarjeta de Crédito CAIXA SAS.exe

  • Size

    3.2MB

  • MD5

    09bb05a14f96a008da82cc06277e65dc

  • SHA1

    7e140dc2f7a70e016f95c216f621324264133b96

  • SHA256

    8a8510d2187fd728940e181d4439b0540b24a3ba120e5a2c2848de00a925a25a

  • SHA512

    6d61db479ee1c4b2454e1d8c19524a567cd3f9f84946593fa3c03932ff01bc02cfd80c82a0f9650e435babc0479857fe2c90460bf5effbe6f6d7a6a354dc18ec

  • SSDEEP

    98304:tPvxQDFdz7aAXTiI0kKTC8Va7G7S/Vt9STf:tPvAxIkKO8U5LwT

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

bendito.con-ip.com:3005

Attributes
  • communication_password

    202cb962ac59075b964b07152d234b70

  • 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 8 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Autorización Tarjeta de Crédito CAIXA SAS.exe
    "C:\Users\Admin\AppData\Local\Temp\Autorización Tarjeta de Crédito CAIXA SAS.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:900
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:520

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/520-71-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-74-0x0000000000150000-0x000000000015A000-memory.dmp
    Filesize

    40KB

  • memory/520-67-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-66-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-77-0x0000000000150000-0x000000000015A000-memory.dmp
    Filesize

    40KB

  • memory/520-76-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-75-0x0000000000150000-0x000000000015A000-memory.dmp
    Filesize

    40KB

  • memory/520-70-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-68-0x00000000007E2730-mapping.dmp
  • memory/520-64-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-78-0x0000000000150000-0x000000000015A000-memory.dmp
    Filesize

    40KB

  • memory/520-73-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-63-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/520-69-0x0000000000400000-0x00000000007E4000-memory.dmp
    Filesize

    3.9MB

  • memory/900-61-0x000000006FA70000-0x000000007001B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-62-0x000000006FA70000-0x000000007001B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-60-0x000000006FA70000-0x000000007001B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-58-0x0000000000000000-mapping.dmp
  • memory/1048-54-0x0000000001090000-0x00000000013D2000-memory.dmp
    Filesize

    3.3MB

  • memory/1048-56-0x00000000759F1000-0x00000000759F3000-memory.dmp
    Filesize

    8KB

  • memory/1048-55-0x0000000004C80000-0x0000000004EBC000-memory.dmp
    Filesize

    2.2MB

  • memory/1048-57-0x0000000000F70000-0x0000000001002000-memory.dmp
    Filesize

    584KB