Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 12:16

General

  • Target

    Request form.docs.exe

  • Size

    745KB

  • MD5

    44cb7649374df879012160b24ca69a60

  • SHA1

    c637e480a3335a8ade7a28058798e6ddc764ca89

  • SHA256

    3033730f6b585fdcb6e1cf2a88e8debd2f73e2e5c7064ec0b13e471bcffe191c

  • SHA512

    30add6247c2c9b4d0564f7433a65541e6d8e4c5d933bf655ab3ac1ed4cf6047cbff18cfc6c60b2d4b7c7f1810802e93a851212cdf1d694e2f897de0ae1536f6d

  • SSDEEP

    12288:os1XVFrB0mdEATN6P5zK3vBdljH8aEQalJacLyJQE8cWwz3ZsqJ/:oAuOTNmcvpjcLQyJvGGErsqJ/

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Request form.docs.exe
    "C:\Users\Admin\AppData\Local\Temp\Request form.docs.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GbwTqrPiggrQo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC236.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2708
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2100

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC236.tmp

    Filesize

    1KB

    MD5

    fe520b1f3b496985aa3fa757534decbe

    SHA1

    ce6d8915237ad1fb0ba2a3dc1b5519cdf1269c98

    SHA256

    78a3fa613c5cdce22b500d2ffdf65a70ec1e8bcd951e50d26a99145835cc2d21

    SHA512

    9dcbdbae47414293ef284be6eb72647ed1f000ac6a72eeef58ae13903150a1601dcf35a670763df8ef847e03fbebb7af6a3ac3f88a9ea161642c4404df76312a

  • memory/1716-26-0x0000000074600000-0x0000000074CEE000-memory.dmp

    Filesize

    6.9MB

  • memory/1716-1-0x0000000000E70000-0x0000000000F30000-memory.dmp

    Filesize

    768KB

  • memory/1716-2-0x0000000004AC0000-0x0000000004B00000-memory.dmp

    Filesize

    256KB

  • memory/1716-3-0x00000000005B0000-0x00000000005BC000-memory.dmp

    Filesize

    48KB

  • memory/1716-4-0x0000000074600000-0x0000000074CEE000-memory.dmp

    Filesize

    6.9MB

  • memory/1716-5-0x0000000004AC0000-0x0000000004B00000-memory.dmp

    Filesize

    256KB

  • memory/1716-6-0x00000000006C0000-0x000000000072C000-memory.dmp

    Filesize

    432KB

  • memory/1716-7-0x0000000005EE0000-0x0000000005F64000-memory.dmp

    Filesize

    528KB

  • memory/1716-8-0x0000000000E30000-0x0000000000E72000-memory.dmp

    Filesize

    264KB

  • memory/1716-0-0x0000000074600000-0x0000000074CEE000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-12-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2100-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-14-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-24-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-27-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2100-28-0x0000000074580000-0x0000000074C6E000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-29-0x0000000004930000-0x0000000004970000-memory.dmp

    Filesize

    256KB

  • memory/2100-30-0x0000000074580000-0x0000000074C6E000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-31-0x0000000004930000-0x0000000004970000-memory.dmp

    Filesize

    256KB