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Analysis

  • max time kernel
    121s
  • max time network
    129s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    01/11/2023, 12:47

General

  • Target

    ORDER 00.rtf

  • Size

    227KB

  • MD5

    5483c4d5bd2f86ae17a02583ca1264c1

  • SHA1

    2fe0ad2983ee1f8a71aca5727c65d3ae9e54fdc8

  • SHA256

    0352d3068460a1f9e366d76d3bc508449f0fceaf5a73a45e821cf11ba38bf6bf

  • SHA512

    b2cdff776ee97ae2afbbf8aeb553e08a26e7170a78642fbb51d653168f62e295b4d8ac763fab539640fcbff6ee5be2e477c1074b2757b89edd6fcc5006cb5b54

  • SSDEEP

    768:gwAbZSibMX9gRWj75vSln/16AiMqcho7tdn6MRwlz07ftrLI0:gwAlRIvSln/6Mlho7tdn6Xlz0TtrLI0

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.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 21 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\ORDER 00.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:2436
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2372
    • 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:2036
      • C:\Users\Admin\AppData\Roaming\obi210048.exe
        "C:\Users\Admin\AppData\Roaming\obi210048.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2752
        • C:\Users\Admin\AppData\Roaming\obi210048.exe
          "C:\Users\Admin\AppData\Roaming\obi210048.exe"
          3⤵
          • Executes dropped EXE
          PID:2804
        • C:\Users\Admin\AppData\Roaming\obi210048.exe
          "C:\Users\Admin\AppData\Roaming\obi210048.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:624

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      8efecf3dbc66d70a960c7ad0509f88e6

      SHA1

      c3a10a5abd2119dca7944952a1d01f325708cd73

      SHA256

      a360e3ebcad38fd72acf9a555fe757325520d764f603554ff9a0d8047bc6627e

      SHA512

      436fff3e5ae4857518be44d95ff6f0ff939c20776ab591942fe8666de3b8e31810ce385d9656537c3f9943f472fddbdd9eb61f951e98d6791a4e085516a96960

    • C:\Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • C:\Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • C:\Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • C:\Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • C:\Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • \Users\Admin\AppData\Roaming\obi210048.exe

      Filesize

      794KB

      MD5

      5df0889ecdfad6a73ccac25b30d25a4c

      SHA1

      28494886466e3bbd42b5ebf91066c604d7aacfb6

      SHA256

      0c21fd40425fd9f22814fdd019b69dad64538d8e4a49a38cf0211301d053a2d5

      SHA512

      85f0bac41f6f25c7e70529a971977235c12a61ac5f834e8372dc796b901791a1c9e84afdb18f3780b2ffad57d9ea37c37177a79a614cd7d0ba9778d4f47c4838

    • memory/624-47-0x00000000004C0000-0x0000000000500000-memory.dmp

      Filesize

      256KB

    • memory/624-43-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-37-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-33-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/624-41-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-46-0x000000006B0A0000-0x000000006B78E000-memory.dmp

      Filesize

      6.9MB

    • memory/624-45-0x00000000004C0000-0x0000000000500000-memory.dmp

      Filesize

      256KB

    • memory/624-44-0x000000006B0A0000-0x000000006B78E000-memory.dmp

      Filesize

      6.9MB

    • memory/624-34-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-32-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/624-31-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2436-2-0x00000000717BD000-0x00000000717C8000-memory.dmp

      Filesize

      44KB

    • memory/2436-0-0x000000002F111000-0x000000002F112000-memory.dmp

      Filesize

      4KB

    • memory/2436-66-0x00000000717BD000-0x00000000717C8000-memory.dmp

      Filesize

      44KB

    • memory/2436-22-0x00000000717BD000-0x00000000717C8000-memory.dmp

      Filesize

      44KB

    • memory/2436-65-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2436-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2752-16-0x000000006B930000-0x000000006C01E000-memory.dmp

      Filesize

      6.9MB

    • memory/2752-40-0x000000006B930000-0x000000006C01E000-memory.dmp

      Filesize

      6.9MB

    • memory/2752-29-0x00000000050C0000-0x000000000515A000-memory.dmp

      Filesize

      616KB

    • memory/2752-28-0x0000000000480000-0x000000000048A000-memory.dmp

      Filesize

      40KB

    • memory/2752-27-0x0000000000470000-0x0000000000476000-memory.dmp

      Filesize

      24KB

    • memory/2752-25-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

      Filesize

      256KB

    • memory/2752-24-0x000000006B930000-0x000000006C01E000-memory.dmp

      Filesize

      6.9MB

    • memory/2752-23-0x0000000000340000-0x0000000000350000-memory.dmp

      Filesize

      64KB

    • memory/2752-17-0x0000000004BB0000-0x0000000004BF0000-memory.dmp

      Filesize

      256KB

    • memory/2752-15-0x0000000000A20000-0x0000000000AEC000-memory.dmp

      Filesize

      816KB