Analysis

  • max time kernel
    67s
  • max time network
    69s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06-02-2023 19:14

General

  • Target

    PO-23-0103000RPM.PDF.exe

  • Size

    823KB

  • MD5

    f623a5768af272301f33b27655fcbb90

  • SHA1

    74b12a26b9c94a871b0d89c000b73182a9aa3f4d

  • SHA256

    92d13e09fd15a7a89caa8753d0fe0f8be6ac49f402a4bbae0da6a6bc57d21c33

  • SHA512

    1390ac48156c882e26e35949b99242980b4449b828731691dce92ac51828757acd86353022b0c69cdbce85f1ee37ea46403752a9b93e7f8687457533ff19aac7

  • SSDEEP

    24576:UA3XrxN5IC54TWMWpRo0ysh23SxqoS8w0b:DrtgiBpG0ysAGqr8w

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5677685939:AAFELEmWBrxMnyX4KiFEXWGKBWoRi9TCLHE/

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). Likely ransomware behaviour.

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gRFAlsPgX.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:768
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gRFAlsPgX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCE48.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:540
    • C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe"
      2⤵
        PID:868
      • C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe
        "C:\Users\Admin\AppData\Local\Temp\PO-23-0103000RPM.PDF.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1656

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpCE48.tmp
      Filesize

      1KB

      MD5

      6d5b62278e45b49886869dbc05cce432

      SHA1

      1b961196c3638a92651793261f937f6acbab690d

      SHA256

      04d242aea5f3db26dc04d4a47c578ffb2df36e9fcd78d4ff93663bd02fef2ce9

      SHA512

      aa85f44928b60164ff2e859377bbf33f77cfe49fa7907898cc307d11f7bc4a223d5471b7d01f4bd22bff8a81dfa9b20943e44fc3dc4404dcf52a457a7584c5b1

    • memory/540-60-0x0000000000000000-mapping.dmp
    • memory/768-59-0x0000000000000000-mapping.dmp
    • memory/768-77-0x0000000073780000-0x0000000073D2B000-memory.dmp
      Filesize

      5.7MB

    • memory/768-76-0x0000000073780000-0x0000000073D2B000-memory.dmp
      Filesize

      5.7MB

    • memory/1168-63-0x0000000002170000-0x00000000021A2000-memory.dmp
      Filesize

      200KB

    • memory/1168-58-0x00000000054D0000-0x000000000555C000-memory.dmp
      Filesize

      560KB

    • memory/1168-57-0x00000000005C0000-0x00000000005CC000-memory.dmp
      Filesize

      48KB

    • memory/1168-54-0x0000000000180000-0x0000000000254000-memory.dmp
      Filesize

      848KB

    • memory/1168-55-0x0000000075881000-0x0000000075883000-memory.dmp
      Filesize

      8KB

    • memory/1168-56-0x00000000003E0000-0x00000000003F4000-memory.dmp
      Filesize

      80KB

    • memory/1656-67-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-68-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-70-0x000000000042B16E-mapping.dmp
    • memory/1656-69-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-74-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-72-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-65-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1656-64-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB