Analysis

  • max time kernel
    96s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    09-12-2023 17:01

General

  • Target

    Προσφορά.rtf

  • Size

    171KB

  • MD5

    89b53168791254c2607152a98f36f82d

  • SHA1

    ce568d6a989b016dc0cdb4417e899441ffb30249

  • SHA256

    9feb3776b218c36c46e76c896356aeae822e19c4c1caf5814c625d1a48b7fece

  • SHA512

    5ca27f17cdb917989a900aec3e494db8e02d86158d92ad109034b3f4e1a01e88aaeef8dc4c7fd732a980737c8acc69f0149d5ec6b7f3f3ae4e1d141f0dff1477

  • SSDEEP

    768:swAbZSibMX9gRWjtwAbZSibMX9gRWjM6MvWrLJqnqg1s:swAlRkwAlRBWrL6qg1s

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • 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.

  • 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
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Προσφορά.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:540
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2140
      • C:\Users\Admin\AppData\Roaming\plugman39486.exe
        "C:\Users\Admin\AppData\Roaming\plugman39486.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2588
        • C:\Users\Admin\AppData\Roaming\plugman39486.exe
          "C:\Users\Admin\AppData\Roaming\plugman39486.exe"
          3⤵
          • Executes dropped EXE
          PID:564
        • C:\Users\Admin\AppData\Roaming\plugman39486.exe
          "C:\Users\Admin\AppData\Roaming\plugman39486.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2752
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe"
      1⤵
        PID:876

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • C:\Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • C:\Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • C:\Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • C:\Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • \Users\Admin\AppData\Roaming\plugman39486.exe

        Filesize

        737KB

        MD5

        a0a98d41a45aaa6af1ad3d084218e1b7

        SHA1

        aaf63c99c9313bd7ee46b67f5bea4f35e967e1af

        SHA256

        e3c48ba70cb42a88e5ebe7e22a5c28ddf8993f9c5106d0ab7e38450229f374c6

        SHA512

        96542a1828b66845095f98fb62fb99975a507a89bcc487139045800c5bc1a05bedc337e3699a06887969319b6f8fb51e568d13e42c12815d6d0092b71367e495

      • memory/1740-23-0x00000000716AD000-0x00000000716B8000-memory.dmp

        Filesize

        44KB

      • memory/1740-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

        Filesize

        64KB

      • memory/1740-2-0x00000000716AD000-0x00000000716B8000-memory.dmp

        Filesize

        44KB

      • memory/1740-0-0x000000002F721000-0x000000002F722000-memory.dmp

        Filesize

        4KB

      • memory/2588-26-0x00000000052C0000-0x000000000533A000-memory.dmp

        Filesize

        488KB

      • memory/2588-22-0x0000000001D50000-0x0000000001D6A000-memory.dmp

        Filesize

        104KB

      • memory/2588-24-0x0000000000840000-0x0000000000848000-memory.dmp

        Filesize

        32KB

      • memory/2588-25-0x0000000001D70000-0x0000000001D7A000-memory.dmp

        Filesize

        40KB

      • memory/2588-17-0x0000000001F00000-0x0000000001F40000-memory.dmp

        Filesize

        256KB

      • memory/2588-15-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

        Filesize

        6.9MB

      • memory/2588-40-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

        Filesize

        6.9MB

      • memory/2588-14-0x0000000000110000-0x00000000001CE000-memory.dmp

        Filesize

        760KB

      • memory/2752-31-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-30-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2752-34-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-29-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-37-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-28-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-39-0x0000000000400000-0x0000000000442000-memory.dmp

        Filesize

        264KB

      • memory/2752-41-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

        Filesize

        6.9MB

      • memory/2752-42-0x00000000048B0000-0x00000000048F0000-memory.dmp

        Filesize

        256KB

      • memory/2752-44-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

        Filesize

        6.9MB

      • memory/2752-45-0x00000000048B0000-0x00000000048F0000-memory.dmp

        Filesize

        256KB