Analysis

  • max time kernel
    152s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 14:41

General

  • Target

    Purchase Order......21-11-22.exe

  • Size

    718KB

  • MD5

    34b26dab00fad0c5d70277e58cb0b546

  • SHA1

    7af5c0c05fc740c7dfa410235b6781c2f08bd996

  • SHA256

    b1614082023a76f25d59eee39a1fc2377d7b678e5c6ad7d451f0477b374d6660

  • SHA512

    ceb27d8fb939418e5b09a3e3897f93357b0404fcc8be385522494ec8d46aa14a933fdd293522c0ef50caf40d756bcc8fef95a0ec530ea40a4b3849558a2ce045

  • SSDEEP

    12288:6PMsbBtXrT1rAChzf0y/lqwVaG/TTcrmvPd3FRu+fTbML+mxh+4NPBW4/nuisOLw:21rbhzfDtqAbbT3vY+fDmxhFggux+L7m

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5467926675:AAHl4rZuFMBsQAWPk1ynhSWYCGcDxYqlg7g/

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3356
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe"
      2⤵
        PID:952
      • C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe
        "C:\Users\Admin\AppData\Local\Temp\Purchase Order......21-11-22.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1848

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/952-138-0x0000000000000000-mapping.dmp

    • memory/1848-141-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1848-153-0x00000000061B0000-0x0000000006200000-memory.dmp

      Filesize

      320KB

    • memory/1848-140-0x0000000000000000-mapping.dmp

    • memory/2028-133-0x0000000005700000-0x0000000005CA4000-memory.dmp

      Filesize

      5.6MB

    • memory/2028-134-0x00000000051F0000-0x0000000005282000-memory.dmp

      Filesize

      584KB

    • memory/2028-135-0x0000000005290000-0x000000000529A000-memory.dmp

      Filesize

      40KB

    • memory/2028-136-0x0000000000E70000-0x0000000000F0C000-memory.dmp

      Filesize

      624KB

    • memory/2028-132-0x00000000007A0000-0x000000000085A000-memory.dmp

      Filesize

      744KB

    • memory/3356-144-0x0000000005BD0000-0x0000000005C36000-memory.dmp

      Filesize

      408KB

    • memory/3356-150-0x0000000007BE0000-0x000000000825A000-memory.dmp

      Filesize

      6.5MB

    • memory/3356-143-0x0000000005480000-0x00000000054A2000-memory.dmp

      Filesize

      136KB

    • memory/3356-139-0x0000000002920000-0x0000000002956000-memory.dmp

      Filesize

      216KB

    • memory/3356-145-0x0000000005C40000-0x0000000005CA6000-memory.dmp

      Filesize

      408KB

    • memory/3356-146-0x00000000062D0000-0x00000000062EE000-memory.dmp

      Filesize

      120KB

    • memory/3356-147-0x0000000006800000-0x0000000006832000-memory.dmp

      Filesize

      200KB

    • memory/3356-148-0x00000000708C0000-0x000000007090C000-memory.dmp

      Filesize

      304KB

    • memory/3356-149-0x00000000067E0000-0x00000000067FE000-memory.dmp

      Filesize

      120KB

    • memory/3356-142-0x00000000055A0000-0x0000000005BC8000-memory.dmp

      Filesize

      6.2MB

    • memory/3356-151-0x0000000007560000-0x000000000757A000-memory.dmp

      Filesize

      104KB

    • memory/3356-152-0x00000000075D0000-0x00000000075DA000-memory.dmp

      Filesize

      40KB

    • memory/3356-137-0x0000000000000000-mapping.dmp

    • memory/3356-154-0x0000000007870000-0x0000000007906000-memory.dmp

      Filesize

      600KB

    • memory/3356-155-0x0000000007820000-0x000000000782E000-memory.dmp

      Filesize

      56KB

    • memory/3356-156-0x0000000007910000-0x000000000792A000-memory.dmp

      Filesize

      104KB

    • memory/3356-157-0x0000000007860000-0x0000000007868000-memory.dmp

      Filesize

      32KB