Analysis

  • max time kernel
    123s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250610-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250610-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/06/2025, 17:29

General

  • Target

    msedge_elf.dll

  • Size

    3.6MB

  • MD5

    b64096bcd104cc44ac58ccefee86e1bc

  • SHA1

    3fc620ea06262fba34432db67a37ebde21c421a7

  • SHA256

    5c1c18608cdd8918648425cc85a29f254ca981c7c5a48b245686a47c0391ce5f

  • SHA512

    54e84c8f5768a2b23b307686397203d3813116a105b16a864bc10793d5edd6f189b0fd12c9acaa772aab486cfa39339c61d467dee5639715c0be5ddd6feb6d0b

  • SSDEEP

    49152:47ppExuQ0dbvh7JFSLBE18nnmGCzkvPkpRgVNM3XHcgODfItFAFYwe/A7JHLt11w:4Vp7IBE1YSC6

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 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
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\msedge_elf.dll,#1
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2412
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2912
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cmd.exe /C start "" /D "C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName" "C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\rundll32.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5000
    • C:\Windows\system32\cmd.exe
      cmd.exe /C start "" /D "C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName" "C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\rundll32.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5956
      • C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\rundll32.exe
        "C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\rundll32.exe"
        3⤵
        • Executes dropped EXE
        PID:4480

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        • C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\dpnhupnp.dll

          Filesize

          10KB

          MD5

          ba32bb24b7da23bd7ee7ae4b576338cd

          SHA1

          17731367250361c6b1aaf24f988b8dd1150b1e92

          SHA256

          7cf4535e85ec02365c54bf460992344fe1e319381e794e51a7ce0f9cb0438929

          SHA512

          4317c083c491e74ef7e1ad30d79164b3d6ba360f3b83a88d220b21385837049a33c3023c5f9d10c42980c45fecc747d271263242976435abab7612c26e486be4

        • C:\Users\Admin\DivideByZeroExceptionIProducerConsumerQueue1GetShortestDayName\rundll32.exe

          Filesize

          70KB

          MD5

          ef3179d498793bf4234f708d3be28633

          SHA1

          dd399ae46303343f9f0da189aee11c67bd868222

          SHA256

          b53f3c0cd32d7f20849850768da6431e5f876b7bfa61db0aa0700b02873393fa

          SHA512

          02aff154762d7e53e37754f878ce6aa3f4df5a1eb167e27f13d9762dced32bec892bfa3f3314e3c6dce5998f7d3c400d7d0314b9326eedcab72207c60b3d332e

        • memory/2912-4423-0x0000000000400000-0x0000000000440000-memory.dmp

          Filesize

          256KB

        • memory/2912-4426-0x0000000005A40000-0x0000000005FE4000-memory.dmp

          Filesize

          5.6MB

        • memory/2912-4427-0x0000000005480000-0x0000000005490000-memory.dmp

          Filesize

          64KB

        • memory/2912-4428-0x0000000005500000-0x0000000005566000-memory.dmp

          Filesize

          408KB

        • memory/2912-4429-0x0000000006900000-0x0000000006950000-memory.dmp

          Filesize

          320KB

        • memory/2912-4430-0x00000000069F0000-0x0000000006A82000-memory.dmp

          Filesize

          584KB

        • memory/2912-4431-0x0000000006B80000-0x0000000006B8A000-memory.dmp

          Filesize

          40KB

        • memory/2912-4432-0x0000000005480000-0x0000000005490000-memory.dmp

          Filesize

          64KB