Analysis

  • max time kernel
    71s
  • max time network
    0s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    21-10-2021 14:15

General

  • Target

    BANK COPY.doc

  • Size

    440KB

  • MD5

    978891042c401f4f06a7575d86c62533

  • SHA1

    1e51fadad4f54b068a3693aec6693c78feba3ee0

  • SHA256

    828803e774a6a8a421b89862344bcce0445e8f38664baa1ceea169633fb3a73a

  • SHA512

    71dd81bae7d55713a4716a29ece7af66d5a6d73d835b08bda29fdefe9d98a8a11921b64d6825f52a9e55cc9c087008811abb330c8c247d0c573b0a4eca83adaa

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.vivaldi.net
  • Port:
    587
  • Username:
    masterwork123oshe@vivaldi.net
  • Password:
    payment@1234

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • 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 16 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\BANK COPY.doc"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:804
      • C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe
        "C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:988
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ntSpZrqZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC2D2.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1272
        • C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe
          "C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:548

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • C:\Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • \Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • \Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • \Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • \Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • \Users\Admin\AppData\Local\Temp\BANK COPY.exe
      MD5

      e6c4cc5d13cbcca766ec3f7370d3794d

      SHA1

      2fc631568b1d0202c9e637aac7331cb32575cf88

      SHA256

      dfe2eca5a711af26bcc1dd31db2d2dab3a65baffd35cf8bf0505dca19a21a7f5

      SHA512

      7fff07de70c7d53d5f4e59dcad42433f390fbd639e47b92f81e6d3d4ce7ea92c23f7f403f6bf1e56be7ab8b590273008f0da0f2294910f7fcf1769be82385ab4

    • memory/548-78-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/548-76-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/548-85-0x0000000004A20000-0x0000000004A21000-memory.dmp
      Filesize

      4KB

    • memory/548-77-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/548-83-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/548-79-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/548-81-0x000000000043762E-mapping.dmp
    • memory/548-80-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/804-59-0x0000000000000000-mapping.dmp
    • memory/804-60-0x000007FEFC461000-0x000007FEFC463000-memory.dmp
      Filesize

      8KB

    • memory/944-56-0x0000000070831000-0x0000000070833000-memory.dmp
      Filesize

      8KB

    • memory/944-57-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/944-58-0x0000000076241000-0x0000000076243000-memory.dmp
      Filesize

      8KB

    • memory/944-55-0x0000000072DB1000-0x0000000072DB4000-memory.dmp
      Filesize

      12KB

    • memory/988-68-0x0000000000F80000-0x0000000000F81000-memory.dmp
      Filesize

      4KB

    • memory/988-73-0x0000000004EA0000-0x0000000004EF8000-memory.dmp
      Filesize

      352KB

    • memory/988-72-0x00000000002C0000-0x00000000002C1000-memory.dmp
      Filesize

      4KB

    • memory/988-71-0x0000000000430000-0x0000000000437000-memory.dmp
      Filesize

      28KB

    • memory/988-65-0x0000000000000000-mapping.dmp
    • memory/1272-74-0x0000000000000000-mapping.dmp