Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    07-12-2023 19:46

General

  • Target

    b77223fc6268c1558db0bf8c74024c83aa08c6f6adbd10740da756ff4849dec8exe.exe

  • Size

    700KB

  • MD5

    573eabd03eb34d02b98e4e2403e2b8c7

  • SHA1

    76691bbc40f02ecfa50b81932f23f17efe257915

  • SHA256

    b77223fc6268c1558db0bf8c74024c83aa08c6f6adbd10740da756ff4849dec8

  • SHA512

    06847d8f67a9fde47dac66fad33e2c14e17d744921b7d0c0c47521e7f7c26aef7624a746c31fff8da9e3f6a071c9842e7c8f79bf1327f95e5b929c96f3bd3c3f

  • SSDEEP

    12288:NMeQaueH5qcFmyvE3EPnqeX6OdardDLynalRH1ycZUWwlJukj53rdYyZiVlGT27v:N5qcFmys3EPnqeDYtzlTnSzZhYyz1q

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b77223fc6268c1558db0bf8c74024c83aa08c6f6adbd10740da756ff4849dec8exe.exe
    "C:\Users\Admin\AppData\Local\Temp\b77223fc6268c1558db0bf8c74024c83aa08c6f6adbd10740da756ff4849dec8exe.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2944
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\nXBPha.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2692
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nXBPha" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB13.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2636
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpDB13.tmp

    Filesize

    1KB

    MD5

    60534ec1814c1d1beef61086c2c2d9b9

    SHA1

    9a4488f8c08da020fdee7327fbfd69d4ba3af36d

    SHA256

    ecd19abe66d30887a2e60613dec23717448940d3769f12b01c75127962eb588b

    SHA512

    5425c5fa8d68fa412c2d6f1e973fe63503b3ed70ad8162b3b845cd97d27a339a4b1e7f1b810d598ff7bbfd3acec1b632882e191036a3004a17463c4b5d5a8cc9

  • memory/2692-28-0x000000006EA70000-0x000000006F01B000-memory.dmp

    Filesize

    5.7MB

  • memory/2692-30-0x0000000002640000-0x0000000002680000-memory.dmp

    Filesize

    256KB

  • memory/2692-32-0x0000000002640000-0x0000000002680000-memory.dmp

    Filesize

    256KB

  • memory/2692-33-0x000000006EA70000-0x000000006F01B000-memory.dmp

    Filesize

    5.7MB

  • memory/2692-34-0x000000006EA70000-0x000000006F01B000-memory.dmp

    Filesize

    5.7MB

  • memory/2944-3-0x0000000000710000-0x000000000072A000-memory.dmp

    Filesize

    104KB

  • memory/2944-6-0x0000000007690000-0x000000000770C000-memory.dmp

    Filesize

    496KB

  • memory/2944-5-0x0000000000850000-0x000000000085A000-memory.dmp

    Filesize

    40KB

  • memory/2944-4-0x0000000000750000-0x0000000000758000-memory.dmp

    Filesize

    32KB

  • memory/2944-27-0x0000000074650000-0x0000000074D3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2944-2-0x00000000070B0000-0x00000000070F0000-memory.dmp

    Filesize

    256KB

  • memory/2944-0-0x0000000000860000-0x0000000000914000-memory.dmp

    Filesize

    720KB

  • memory/2944-1-0x0000000074650000-0x0000000074D3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2980-26-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-24-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-29-0x0000000000F50000-0x0000000000F90000-memory.dmp

    Filesize

    256KB

  • memory/2980-19-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-31-0x0000000074650000-0x0000000074D3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-16-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-14-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2980-36-0x0000000000F50000-0x0000000000F90000-memory.dmp

    Filesize

    256KB

  • memory/2980-37-0x0000000074650000-0x0000000074D3E000-memory.dmp

    Filesize

    6.9MB