Analysis

  • max time kernel
    118s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2023 06:59

General

  • Target

    Nuevo orden09.xlam

  • Size

    604KB

  • MD5

    1cced94c2f3295856386a392a325da66

  • SHA1

    dcfae48899f023345cc40c719c44667901800915

  • SHA256

    82654c49112053c84ca03dad9fe70453d7a0565da3b0ce398cb884807827f992

  • SHA512

    ced1b717a2609a566189a201aab8278e998e151e3816ddc7b5be9c63e7a348c02c93f09809b6d0207d056bc2a43dea29e7ee470e5eebdf6b612bc12dce6966c9

  • SSDEEP

    12288:8qDEDDicPcVmotix40XvlFPGAAvjh6zIFS3iXb7Ze94yaoTnkcu7HJtGUNwN:jSDickVV7cDGt6zhiXICyJ4cCHJtjN8

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5866032214:AAFIOyXMBAXtSDPbd1lqRSgP4WSftaTimg4/

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\Nuevo orden09.xlam"
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2964
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Users\Admin\AppData\Roaming\htmlwindows.exe
      C:\Users\Admin\AppData\Roaming\htmlwindows.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:2848
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\htmlwindows.exe

    Filesize

    1.0MB

    MD5

    5e32b356e47560e7920fe291ab2d0c6c

    SHA1

    950d0ac0deb7bba590731dcdf879cb5156214abb

    SHA256

    0ec323f55808814136b3c1059277ac2a2753955676218a13aacc73565fea684e

    SHA512

    59c1935d2cb6b3147e5155cc7d273b0dc4aee0f54be9a82891ccefd066fa8418c1fb5ad1fa3a1add131cc8e1c4a56b801b20aaf08b8ba5e45636e1a43fd3de12

  • C:\Users\Admin\AppData\Roaming\htmlwindows.exe

    Filesize

    1.0MB

    MD5

    5e32b356e47560e7920fe291ab2d0c6c

    SHA1

    950d0ac0deb7bba590731dcdf879cb5156214abb

    SHA256

    0ec323f55808814136b3c1059277ac2a2753955676218a13aacc73565fea684e

    SHA512

    59c1935d2cb6b3147e5155cc7d273b0dc4aee0f54be9a82891ccefd066fa8418c1fb5ad1fa3a1add131cc8e1c4a56b801b20aaf08b8ba5e45636e1a43fd3de12

  • C:\Users\Admin\AppData\Roaming\htmlwindows.exe

    Filesize

    1.0MB

    MD5

    5e32b356e47560e7920fe291ab2d0c6c

    SHA1

    950d0ac0deb7bba590731dcdf879cb5156214abb

    SHA256

    0ec323f55808814136b3c1059277ac2a2753955676218a13aacc73565fea684e

    SHA512

    59c1935d2cb6b3147e5155cc7d273b0dc4aee0f54be9a82891ccefd066fa8418c1fb5ad1fa3a1add131cc8e1c4a56b801b20aaf08b8ba5e45636e1a43fd3de12

  • \Users\Admin\AppData\Roaming\htmlwindows.exe

    Filesize

    1.0MB

    MD5

    5e32b356e47560e7920fe291ab2d0c6c

    SHA1

    950d0ac0deb7bba590731dcdf879cb5156214abb

    SHA256

    0ec323f55808814136b3c1059277ac2a2753955676218a13aacc73565fea684e

    SHA512

    59c1935d2cb6b3147e5155cc7d273b0dc4aee0f54be9a82891ccefd066fa8418c1fb5ad1fa3a1add131cc8e1c4a56b801b20aaf08b8ba5e45636e1a43fd3de12

  • memory/2548-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-30-0x0000000001120000-0x0000000001160000-memory.dmp

    Filesize

    256KB

  • memory/2548-29-0x000000006C920000-0x000000006D00E000-memory.dmp

    Filesize

    6.9MB

  • memory/2548-27-0x0000000001120000-0x0000000001160000-memory.dmp

    Filesize

    256KB

  • memory/2548-26-0x000000006C920000-0x000000006D00E000-memory.dmp

    Filesize

    6.9MB

  • memory/2548-15-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-17-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2548-19-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2548-25-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2848-23-0x000000006C920000-0x000000006D00E000-memory.dmp

    Filesize

    6.9MB

  • memory/2848-14-0x0000000000310000-0x000000000031A000-memory.dmp

    Filesize

    40KB

  • memory/2848-13-0x0000000004C40000-0x0000000004C80000-memory.dmp

    Filesize

    256KB

  • memory/2848-12-0x000000006C920000-0x000000006D00E000-memory.dmp

    Filesize

    6.9MB

  • memory/2848-11-0x0000000000AF0000-0x0000000000BF4000-memory.dmp

    Filesize

    1.0MB

  • memory/2964-1-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB

  • memory/2964-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2964-28-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB

  • memory/2964-32-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2964-33-0x0000000072AAD000-0x0000000072AB8000-memory.dmp

    Filesize

    44KB