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Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 19:54

General

  • Target

    Purchase-Order.scr.exe

  • Size

    672KB

  • MD5

    7fccb0197c8d6888ab6a5f9713fba9f6

  • SHA1

    ae8ea47dbb7c8bc40df063ea2e05823e2458cced

  • SHA256

    b89fe3a178283fbd51ed71bd488e079a81dff40fc7124f57540e98540dce28a1

  • SHA512

    feccea6ac8dc93c7f3bc88f3e3b2d3a84b11738161c8e1a153c5a8a29e17e424a84b75daf1754dd3e9d0f7f32335b9e1a6aa811349660e4f6837247add0bb7d2

  • SSDEEP

    12288:UVj3hLQvfdxOo7gpXtrFF725cxd9dvmVV38eIlCwWTIghwhKfwlucbh1ejqaRiv6:sMOfx4twKyxluc90JRk6

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6364043354:AAF_1bGx2vGEmysmy8L-UNpPd2QFFHQH3WU/

Signatures

  • AgentTesla

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • 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
  • 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 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase-Order.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase-Order.scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2208
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\KxnjucokNh.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KxnjucokNh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3572.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2748
    • C:\Users\Admin\AppData\Local\Temp\Purchase-Order.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase-Order.scr.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:2840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp3572.tmp

    Filesize

    1KB

    MD5

    83f6a9f387b2470453953997f5f959d7

    SHA1

    d22c9a7f5918772fa5b0608b3e430330236eb956

    SHA256

    7a7aa92e51f0f67aebd01432bc415b32b4fce6081f29b116c7ae1f6d005bd328

    SHA512

    2b77159d8a4527df5d134f5d44382f398e42aa6861acb4983e1a9cad43da58f0679096e604a09746c631ce566285c33ccdc53ab9e1aa525444458522029582a6

  • memory/2208-26-0x00000000747F0000-0x0000000074EDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2208-0-0x0000000000CB0000-0x0000000000D5E000-memory.dmp

    Filesize

    696KB

  • memory/2208-3-0x00000000004D0000-0x00000000004E0000-memory.dmp

    Filesize

    64KB

  • memory/2208-4-0x00000000747F0000-0x0000000074EDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2208-5-0x0000000004DC0000-0x0000000004E00000-memory.dmp

    Filesize

    256KB

  • memory/2208-6-0x00000000004F0000-0x00000000004FC000-memory.dmp

    Filesize

    48KB

  • memory/2208-7-0x0000000005670000-0x00000000056EE000-memory.dmp

    Filesize

    504KB

  • memory/2208-1-0x00000000747F0000-0x0000000074EDE000-memory.dmp

    Filesize

    6.9MB

  • memory/2208-2-0x0000000004DC0000-0x0000000004E00000-memory.dmp

    Filesize

    256KB

  • memory/2840-28-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-17-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-15-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-13-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2840-19-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-25-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-23-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2840-31-0x0000000074770000-0x0000000074E5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2840-32-0x0000000004D50000-0x0000000004D90000-memory.dmp

    Filesize

    256KB

  • memory/2840-40-0x0000000004D50000-0x0000000004D90000-memory.dmp

    Filesize

    256KB

  • memory/2840-39-0x0000000074770000-0x0000000074E5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2892-38-0x0000000073470000-0x0000000073A1B000-memory.dmp

    Filesize

    5.7MB

  • memory/2892-36-0x00000000004F0000-0x0000000000530000-memory.dmp

    Filesize

    256KB

  • memory/2892-37-0x00000000004F0000-0x0000000000530000-memory.dmp

    Filesize

    256KB

  • memory/2892-34-0x0000000073470000-0x0000000073A1B000-memory.dmp

    Filesize

    5.7MB

  • memory/2892-35-0x00000000004F0000-0x0000000000530000-memory.dmp

    Filesize

    256KB

  • memory/2892-33-0x0000000073470000-0x0000000073A1B000-memory.dmp

    Filesize

    5.7MB