Analysis

  • max time kernel
    123s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 09:52

General

  • Target

    Proforma Invoice PDF.exe

  • Size

    82KB

  • MD5

    e77c819969d8520d9bbd027dd1bfaa04

  • SHA1

    27d6482b5777767e98838d5dd2e9d431e2f3ae97

  • SHA256

    6fa5cdc1c01f21f752a968277cb495f3bf83b9171456b83483be4d5d4cea543d

  • SHA512

    de26847a6cc7244ecf566ab2e3126ab27f14b86a8404f30871fc0606fcac8e2dec21c2552c777e7faa945136343e0999c5017e015d72ab79990c5373d40f5748

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    kerekesfoto.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    admin@abc123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Downloads MZ/PE file
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proforma Invoice PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Proforma Invoice PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1444

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Collection

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1444-64-0x000000000043760E-mapping.dmp
  • memory/1444-59-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-60-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-63-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-65-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1444-67-0x0000000000450000-0x0000000000451000-memory.dmp
    Filesize

    4KB

  • memory/1444-68-0x0000000000451000-0x0000000000452000-memory.dmp
    Filesize

    4KB

  • memory/1596-56-0x000000001AD60000-0x000000001AD62000-memory.dmp
    Filesize

    8KB

  • memory/1596-57-0x0000000000560000-0x0000000000562000-memory.dmp
    Filesize

    8KB

  • memory/1596-58-0x0000000000A70000-0x0000000000A78000-memory.dmp
    Filesize

    32KB

  • memory/1596-54-0x0000000001270000-0x0000000001271000-memory.dmp
    Filesize

    4KB