Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    23/01/2024, 15:35

General

  • Target

    DINVE237687289.rtf

  • Size

    157KB

  • MD5

    384e74093fb8e4381996d07853ca4d85

  • SHA1

    7d40d31adbb8ed25b96a884b2e5c934704729af9

  • SHA256

    88df87d037fafe156cc56a5e6118968fcece7763e9d991338621f4095826135a

  • SHA512

    7a8d78c7810950001faaa163544486e45df72765d304a09551a552e7cc0ecdc81c3701fff5fedd0553676b27adfb0ae40b2ba8d98e087a3b01d60e60ee272a47

  • SSDEEP

    768:9wAbZSibMX9gRWjsK5mguqnnNi4yYHpTFsVLn0/:9wAlRLGnwEHXe0/

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    iffyyparvldocxga

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 3 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 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\DINVE237687289.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:2672
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1628
    • 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:1264
      • C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr
        "C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2816
        • C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr
          "C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2612

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr

      Filesize

      451KB

      MD5

      4b9dcd22d9cee0f847f6c981a9ce58cf

      SHA1

      8bc61ba42d4f60a3db0f9c2ba8e087d34e2c4ad8

      SHA256

      7b28c2308c151c9308150de47bc0c0db57635509ac618e2a32c88c317a8bfd02

      SHA512

      1c2bb7d38cdba2657dedbd2f99c0e3b45bb5c4113e1429e0cdd726618fc6e029ace3845d15f4cb6bcf898f64ad275307735e41cbfb5568325262f0e0f24e731a

    • C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr

      Filesize

      422KB

      MD5

      caa0c60e6823b49b8b2c9d3bf4584035

      SHA1

      48ac54d756bcca06c19f6ce66339fab124307547

      SHA256

      5b8a1a9b143cf43ac2a9554449bfdba76f5366008e4e5c0982428cf2d5e0405e

      SHA512

      9b65c885bc7c00d5b28ae29404720db074416dc95c621cccd30272d0aa733a28b615c15809fd3cff711d0393cb62aebfacc8738136d7921e2b83b5f77e8b132d

    • C:\Users\Admin\AppData\Roaming\plugmanatna38965.scr

      Filesize

      326KB

      MD5

      0ebfd5d51e438d9ba45378db3d165cf4

      SHA1

      af7e61b6c7b4aafdee46f528066db8b57dfafb28

      SHA256

      5d550c72b67fd793759adfdeac961873ea9782b9abc0f87f30cd2a2f5faf6369

      SHA512

      e16ce6eb9e0226c7ba44a89ab1d020d9e10cd3f05027e47d5eca138f0c9b5e7b81eedaf4892d439f151c9d50a62d598f4615ab2a980b616efdfc51f024b4e983

    • \Users\Admin\AppData\Roaming\plugmanatna38965.scr

      Filesize

      602KB

      MD5

      c9fb7e897e084f2a9b6ea75362ee0c00

      SHA1

      823ef723d7f8a1fa2939a74615bc997ce9e662b4

      SHA256

      297dd1a82dda10130055d87c01e286b601c2ed01ad5a3f1d6d09b57a00d5671b

      SHA512

      43084680e0f9522a7790aceea52a2e0b1f5be1fea30fb7fe8e56b4156805175724d2878ae11424156e09ddf397b5df73e280ea737a45fa7a1a514cc31eac6c40

    • memory/2612-46-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2612-52-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-60-0x0000000004950000-0x0000000004990000-memory.dmp

      Filesize

      256KB

    • memory/2612-59-0x000000006B0F0000-0x000000006B7DE000-memory.dmp

      Filesize

      6.9MB

    • memory/2612-44-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-42-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-55-0x000000006B0F0000-0x000000006B7DE000-memory.dmp

      Filesize

      6.9MB

    • memory/2612-40-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-48-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-54-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2612-56-0x0000000004950000-0x0000000004990000-memory.dmp

      Filesize

      256KB

    • memory/2612-43-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2672-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2672-2-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/2672-0-0x000000002F971000-0x000000002F972000-memory.dmp

      Filesize

      4KB

    • memory/2672-58-0x000000007180D000-0x0000000071818000-memory.dmp

      Filesize

      44KB

    • memory/2816-39-0x0000000000410000-0x0000000000418000-memory.dmp

      Filesize

      32KB

    • memory/2816-51-0x000000006B980000-0x000000006C06E000-memory.dmp

      Filesize

      6.9MB

    • memory/2816-34-0x00000000010D0000-0x0000000001110000-memory.dmp

      Filesize

      256KB

    • memory/2816-33-0x0000000000C20000-0x0000000000C90000-memory.dmp

      Filesize

      448KB

    • memory/2816-32-0x000000006B980000-0x000000006C06E000-memory.dmp

      Filesize

      6.9MB

    • memory/2816-31-0x0000000001120000-0x00000000011BC000-memory.dmp

      Filesize

      624KB