Analysis

  • max time kernel
    101s
  • max time network
    75s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 06:06

General

  • Target

    PRICE REQUEST FOR ITEMS .rtf

  • Size

    25KB

  • MD5

    03155cbe14d0f635c944d11de1f13516

  • SHA1

    39034545bcea63c84b20a107df1c0bae88112a1b

  • SHA256

    bf009ac1b3f046c23a2b4bbe3ad91ea7d6a6431007c0cf4bb4de095bf10d1511

  • SHA512

    50e41a2f80f5a567c1eb51e7deb132c19344f7456948fbd15c1a921086172f57e496c2cf0a8591bfce1d2679ad464be410d72dc3f171e1e6da7b15992d21b03d

  • SSDEEP

    768:WFx0XaIsnPRIa4fwJMPtznb3pintKkCRfN6UO4F0r:Wf0Xvx3EMP5DApCR8Ue

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5577155192:AAEz6ZTkghx2RsdTxeeE-sDulPHc5WQblVg/

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 2 IoCs
  • Loads dropped DLL 2 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.

  • 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
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 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\PRICE REQUEST FOR ITEMS .rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1016
    • 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:564
      • C:\Users\Admin\AppData\Roaming\kay896523.exe
        "C:\Users\Admin\AppData\Roaming\kay896523.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:360
        • C:\Users\Admin\AppData\Roaming\kay896523.exe
          "C:\Users\Admin\AppData\Roaming\kay896523.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:884

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\kay896523.exe

      Filesize

      722KB

      MD5

      e6a2001dbde3bf2086d37a69227a2499

      SHA1

      e282f10c3c52d7403bc75189af00ad5eb0f7ef2a

      SHA256

      f7a85b381a8b14beb5b1ca19b4a3678c134970610a336376a0ad836191a130bd

      SHA512

      917182c4089edf76854fdce0167182f45a4b5801962c9ed9cc74f458a7a2942a87e7e2c6fcbd26a7519d86199686f4714dfdd4f96e1fa9f8f607f858fe83e417

    • C:\Users\Admin\AppData\Roaming\kay896523.exe

      Filesize

      722KB

      MD5

      e6a2001dbde3bf2086d37a69227a2499

      SHA1

      e282f10c3c52d7403bc75189af00ad5eb0f7ef2a

      SHA256

      f7a85b381a8b14beb5b1ca19b4a3678c134970610a336376a0ad836191a130bd

      SHA512

      917182c4089edf76854fdce0167182f45a4b5801962c9ed9cc74f458a7a2942a87e7e2c6fcbd26a7519d86199686f4714dfdd4f96e1fa9f8f607f858fe83e417

    • C:\Users\Admin\AppData\Roaming\kay896523.exe

      Filesize

      722KB

      MD5

      e6a2001dbde3bf2086d37a69227a2499

      SHA1

      e282f10c3c52d7403bc75189af00ad5eb0f7ef2a

      SHA256

      f7a85b381a8b14beb5b1ca19b4a3678c134970610a336376a0ad836191a130bd

      SHA512

      917182c4089edf76854fdce0167182f45a4b5801962c9ed9cc74f458a7a2942a87e7e2c6fcbd26a7519d86199686f4714dfdd4f96e1fa9f8f607f858fe83e417

    • \Users\Admin\AppData\Roaming\kay896523.exe

      Filesize

      722KB

      MD5

      e6a2001dbde3bf2086d37a69227a2499

      SHA1

      e282f10c3c52d7403bc75189af00ad5eb0f7ef2a

      SHA256

      f7a85b381a8b14beb5b1ca19b4a3678c134970610a336376a0ad836191a130bd

      SHA512

      917182c4089edf76854fdce0167182f45a4b5801962c9ed9cc74f458a7a2942a87e7e2c6fcbd26a7519d86199686f4714dfdd4f96e1fa9f8f607f858fe83e417

    • \Users\Admin\AppData\Roaming\kay896523.exe

      Filesize

      722KB

      MD5

      e6a2001dbde3bf2086d37a69227a2499

      SHA1

      e282f10c3c52d7403bc75189af00ad5eb0f7ef2a

      SHA256

      f7a85b381a8b14beb5b1ca19b4a3678c134970610a336376a0ad836191a130bd

      SHA512

      917182c4089edf76854fdce0167182f45a4b5801962c9ed9cc74f458a7a2942a87e7e2c6fcbd26a7519d86199686f4714dfdd4f96e1fa9f8f607f858fe83e417

    • memory/360-67-0x0000000000420000-0x0000000000438000-memory.dmp

      Filesize

      96KB

    • memory/360-73-0x0000000000680000-0x00000000006BE000-memory.dmp

      Filesize

      248KB

    • memory/360-72-0x0000000005060000-0x00000000050D6000-memory.dmp

      Filesize

      472KB

    • memory/360-71-0x0000000000440000-0x000000000044C000-memory.dmp

      Filesize

      48KB

    • memory/360-62-0x0000000000000000-mapping.dmp

    • memory/360-65-0x0000000001160000-0x000000000121A000-memory.dmp

      Filesize

      744KB

    • memory/884-74-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-75-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-85-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-83-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-79-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-80-0x0000000000437C2E-mapping.dmp

    • memory/884-78-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/884-77-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/960-58-0x000000007156D000-0x0000000071578000-memory.dmp

      Filesize

      44KB

    • memory/960-54-0x0000000072B01000-0x0000000072B04000-memory.dmp

      Filesize

      12KB

    • memory/960-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/960-55-0x0000000070581000-0x0000000070583000-memory.dmp

      Filesize

      8KB

    • memory/960-57-0x00000000757A1000-0x00000000757A3000-memory.dmp

      Filesize

      8KB

    • memory/960-68-0x000000007156D000-0x0000000071578000-memory.dmp

      Filesize

      44KB

    • memory/1016-70-0x000007FEFC011000-0x000007FEFC013000-memory.dmp

      Filesize

      8KB

    • memory/1016-69-0x0000000000000000-mapping.dmp