Analysis

  • max time kernel
    101s
  • max time network
    73s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    30-03-2023 12:54

General

  • Target

    newXspainXorder.rtf

  • Size

    33KB

  • MD5

    db36641ec3f10d09764c30c7b5b878f4

  • SHA1

    0a743acaa85fa32457e6a84dfc1dbab53cd07495

  • SHA256

    3dc8800e380890fec915d4f62026caf4c5ff66f409d1c305c27b5f0ea14834b5

  • SHA512

    3847a32d9d95c8e1864545e5322f775c4c28effda6b39abe8285635bd227a3e67470c8377bd9e8a713739a82271670a59cd4737e1cbd69854860ca1b50c13c0b

  • SSDEEP

    768:dFx0XaIsnPRIa4fwJMg22OkhBOPYDpJoz741N7ajuEzuDnv:df0Xvx3EM/nk7aYDpJoz0TE8v

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6258465660:AAFAPHkxw9lv-YgWk0oo5r_nv12k7nJhSWA/

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 1 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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\newXspainXorder.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:1724
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:932
    • 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:1672
      • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
        "C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:896
        • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
          "C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:1588

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Exploitation for Client Execution

    1
    T1203

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      20KB

      MD5

      0ccb51ffc7e244dd64dcece6f646601a

      SHA1

      13fce30b73a89dabb209f7bb70b8e62573bb08ef

      SHA256

      455e2d5ef32b4ff9267dd945e5107d2473af321f41bbfeab63d7de20f40fc611

      SHA512

      1ea7da86be9c3edc945408ca13b8e0bcc29dc4fed21cdff3d6bccf3c9871be4070b1d1f3e32ffbb8b0957e7e00d7b6fef0363dc6202197cb418420c6b3ad8853

    • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • C:\Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • \Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • \Users\Admin\AppData\Roaming\philipnbw9235795.exe
      Filesize

      680KB

      MD5

      89ab448998a91c5b800515522343a67b

      SHA1

      1a6e87e4d9a0843da2fa15f840d33f7b4cbcd20a

      SHA256

      0e98017a6018b750789e8b7f6f4a0ee880512d36496e503082799df228bfcc0c

      SHA512

      cc23df08173e5782e9536fa5f5706feac26ab122d40d8a610357607ea5ebfe89301c7001bad3680eedabfb912b0e2ab89f8c7e6659f311ee0c419c4eaeff0448

    • memory/896-85-0x00000000003F0000-0x00000000003FC000-memory.dmp
      Filesize

      48KB

    • memory/896-82-0x00000000002C0000-0x00000000002CA000-memory.dmp
      Filesize

      40KB

    • memory/896-77-0x00000000002C0000-0x00000000002CA000-memory.dmp
      Filesize

      40KB

    • memory/896-78-0x0000000004F00000-0x0000000004F40000-memory.dmp
      Filesize

      256KB

    • memory/896-79-0x00000000003E0000-0x00000000003EE000-memory.dmp
      Filesize

      56KB

    • memory/896-80-0x0000000004F00000-0x0000000004F40000-memory.dmp
      Filesize

      256KB

    • memory/896-81-0x00000000002C0000-0x00000000002CA000-memory.dmp
      Filesize

      40KB

    • memory/896-75-0x0000000004F00000-0x0000000004F40000-memory.dmp
      Filesize

      256KB

    • memory/896-83-0x0000000004F00000-0x0000000004F40000-memory.dmp
      Filesize

      256KB

    • memory/896-70-0x00000000000D0000-0x000000000017E000-memory.dmp
      Filesize

      696KB

    • memory/896-86-0x0000000005380000-0x00000000053F8000-memory.dmp
      Filesize

      480KB

    • memory/896-87-0x0000000001F40000-0x0000000001F72000-memory.dmp
      Filesize

      200KB

    • memory/896-99-0x0000000004F00000-0x0000000004F40000-memory.dmp
      Filesize

      256KB

    • memory/896-76-0x00000000002C0000-0x00000000002CA000-memory.dmp
      Filesize

      40KB

    • memory/1588-90-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-91-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-93-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-92-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1588-89-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-96-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-98-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-88-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1588-100-0x0000000004920000-0x0000000004960000-memory.dmp
      Filesize

      256KB

    • memory/1588-101-0x0000000004920000-0x0000000004960000-memory.dmp
      Filesize

      256KB

    • memory/1724-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1724-122-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB